Si12-308 Service Manual B-Series [Applied Models] zInverter Multi : Cooling Only zInverter Multi : Heat Pump
Si12-308 SUPER MULTI NX B-Series zCooling Only Indoor Unit FTKE25BVM FTKE35BVM FTKD50BVM FTKD60BVM FTKD71BVM CDK25AVM CDK35AVM CDK50AVM CDK60AVM FTKE25BVMA FTKE35BVMA FTKD50BVMA FTKD60BVMA FTKD71BVMA CDK25AVMA CDK35AVMA CDK50AVMA CDK60AVMA FLK25AVMA FLK35AVMA FLK50AVMA FLK60AVMA FTKE25BVMT FTKE35BVMT FTKD50BVMT FTKD60BVMT FTKD71BVMT FTKS25BVMB FTKS35BVMB FTKS50BVMB FTKS60BVMB FTKS71BVMB CDKS25BVMB CDKS35BVMB CDKS50BVMB CDKS60BVMB FLKS25BVMB FLKS35BVMB FLKS50BVMB FLKS60BVMB FVKS25BVMB FVKS35BVMB FVKS50B
Si12-308 1. Introduction ........................................................................................... vii 1.1 Safety Cautions ...................................................................................... vii Part 1 List of Functions ................................................................ 1 1. List of Functions ......................................................................................2 1.1 Cooling Only Models .....................................................
Si12-308 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 Fan Control.............................................................................................98 Moisture Protection Function 2...............................................................98 Defrost Control .......................................................................................99 Low Hz High Pressure Limit ...................................................................99 Electronic Expansion Valve Control .................
Si12-308 5.14 5.15 5.16 5.17 5.18 5.19 5.20 5.21 5.22 5.23 5.24 5.25 Input Over Current Detection ...............................................................187 Four Way Valve Abnormality................................................................189 Discharge Pipe Temperature Control...................................................191 Position Sensor Abnormality ................................................................192 CT or Related Abnormality ........................................
Si12-308 Part 9 Appendix......................................................................... 261 1. Piping Diagrams..................................................................................262 1.1 Indoor Units ..........................................................................................262 1.2 Outdoor Units .......................................................................................268 2. Wiring Diagrams..................................................................
Si12-308 vi Table of Contents
Si12-308 Introduction 1. Introduction 1.1 Safety Cautions Cautions and Warnings Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ Warning” items are especially important since they can lead to death or serious injury if they are not followed closely. The “ Caution” items can also lead to serious accidents under some conditions if they are not followed.
Introduction Si12-308 Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks. Be sure to turn off the power switch and unplug the power cable when cleaning the equipment.
Si12-308 Introduction Warning Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to the electrical equipment, the internal wiring regulations and the instruction manual for installation when conducting electrical work. Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire. Be sure to use the specified cable to connect between the indoor and outdoor units.
Introduction Si12-308 Warning Do not use a joined power cable or extension cable, or share the same power outlet with other electrical appliances, since it can cause an electrical shock, excessive heat generation or fire. Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock.
Si12-308 Part 1 List of Functions 1. List of Functions ......................................................................................2 1.1 Cooling Only Models ................................................................................2 1.2 Heat Pump Models.................................................................................
List of Functions Si12-308 1.
{ — 10 ~ 46 — — PAM Control Compressor Oval Scroll Compressor Swing Compressor Rotary Compressor Reluctance DC Motor Comfortable Power-Airflow Flap Airflow Power-Airflow Dual Flaps Power-Airflow Diffuser Wide-Angle Louvers Vertical Auto-Swing (Up and Down) Horizontal Auto-Swing (Right and Left) 3-D Airflow 3-Step Airflow (H/P Only) — — — — — — — — — { — { — { — — — — { — — — — — — — Comfort Control Auto Fan Speed { — Indoor Unit Silent Operation Night Quiet Mode (Automatic) Outdoor Unit
Basic Function Inverter (with Inverter Power Control) Operation Limit for Cooling (°CDB) — Operation Limit for Heating (°CWB) — PAM Control Compressor Oval Scroll Compressor Swing Compressor Rotary Compressor Reluctance DC Motor Comfortable Power-Airflow Flap Airflow Power-Airflow Dual Flaps Power-Airflow Diffuser Wide-Angle Louvers Vertical Auto-Swing (Up and Down) Horizontal Auto-Swing (Right and Left) 3-D Airflow 3-Step Airflow (H/P Only) — — — — — — { — — Comfort Control Auto Fan Speed { Indoor U
{ — 10 ~ 46 — — PAM Control Compressor Oval Scroll Compressor Swing Compressor Rotary Compressor Reluctance DC Motor Comfortable Power-Airflow Flap Airflow Power-Airflow Dual Flaps Power-Airflow Diffuser Wide-Angle Louvers Vertical Auto-Swing (Up and Down) Horizontal Auto-Swing (Right and Left) 3-D Airflow 3-Step Airflow (H/P Only) — — — — — — — — — { — { — { — — — — { — — — — — — — Comfort Control Auto Fan Speed { — Indoor Unit Silent Operation Night Quiet Mode (Automatic) Outdoor Unit
{ — — — — PAM Control Compressor Oval Scroll Compressor Swing Compressor Rotary Compressor Reluctance DC Motor Comfortable Power-Airflow Flap Airflow Power-Airflow Dual Flaps Power-Airflow Diffuser Wide-Angle Louvers Vertical Auto-Swing (Up and Down) Horizontal Auto-Swing (Right and Left) 3-D Airflow 3-Step Airflow (H/P Only) — — — — — — { — { — — — — — — { — { { { — { — { — — Comfort Control Auto Fan Speed { { Indoor Unit Silent Operation Night Quiet Mode (Automatic) Outdoor Unit Silent
Category Basic Function Functions Inverter (with Inverter Power Control) Operation Limit for Cooling (°CDB) Operation Limit for Heating (°CWB) PAM Control Compressor Oval Scroll Compressor Swing Compressor Rotary Compressor Reluctance DC Motor Comfortable Power-Airflow Flap Airflow Power-Airflow Dual Flaps Power-Airflow Diffuser Wide-Angle Louvers Vertical Auto-Swing (Up and Down) Horizontal Auto-Swing (Right and Left) 3-D Airflow 3-Step Airflow (H/P Only) Comfort Control { Category Health & Clean 1
Inverter (with Inverter Power Control) Operation Limit for Cooling (°CDB) — Operation Limit for Heating (°CWB) — PAM Control Compressor Oval Scroll Compressor Swing Compressor Rotary Compressor Reluctance DC Motor Comfortable Power-Airflow Flap Airflow Power-Airflow Dual Flaps Power-Airflow Diffuser Wide-Angle Louvers Vertical Auto-Swing (Up and Down) Horizontal Auto-Swing (Right and Left) 3-D Airflow 3-Step Airflow (H/P Only) — — — — — — { — — Comfort Control Auto Fan Speed { Indoor Unit Silent Opera
{ { Operation Limit for Cooling (°CDB) — — –10 ~ 46 Operation Limit for Heating (°CWB) — — — PAM Control Compressor Oval Scroll Compressor Swing Compressor Rotary Compressor Reluctance DC Motor Comfortable Power-Airflow Flap Airflow Power-Airflow Dual Flaps — — — — — — — — — — — — { — { — { — — — — Power-Airflow Diffuser Wide-Angle Louvers Vertical Auto-Swing (Up and Down) Horizontal Auto-Swing (Right and Left) 3-D Airflow 3-Step Airflow (H/P Only) — { — — — — { { — — — — — — —
List of Functions Basic Function Inverter (with Inverter Power Control) Operation Limit for Cooling (°CDB) — Operation Limit for Heating (°CWB) — PAM Control Compressor Oval Scroll Compressor Swing Compressor Rotary Compressor Reluctance DC Motor Comfortable Power-Airflow Flap Airflow Power-Airflow Dual Flaps Power-Airflow Diffuser Wide-Angle Louvers Vertical Auto-Swing (Up and Down) Horizontal Auto-Swing (Right and Left) 3-D Airflow 3-Step Airflow (H/P Only) — — — — — — { — { Comfort Control Auto Fan
Category Basic Function Functions Inverter (with Inverter Power Control) Operation Limit for Cooling (°CDB) Operation Limit for Heating (°CWB) PAM Control Compressor Oval Scroll Compressor Swing Compressor Rotary Compressor Reluctance DC Motor Comfortable Power-Airflow Flap Airflow Power-Airflow Dual Flaps Power-Airflow Diffuser Wide-Angle Louvers Vertical Auto-Swing (Up and Down) Horizontal Auto-Swing (Right and Left) 3-D Airflow 3-Step Airflow (H/P Only) Comfort Control Auto Fan Speed Indoor Unit Sil
Inverter (with Inverter Power Control) Health & { Clean Operation Limit for Cooling (°CDB) — — — Operation Limit for Heating (°CWB) — — — PAM Control Compressor Oval Scroll Compressor Swing Compressor Rotary Compressor Reluctance DC Motor Comfortable Power-Airflow Flap Airflow Power-Airflow Dual Flaps Power-Airflow Diffuser Wide-Angle Louvers Vertical Auto-Swing (Up and Down) Horizontal Auto-Swing (Right and Left) 3-D Airflow 3-Step Airflow (H/P Only) Comfort Control Auto Fan Speed Indoor Unit Silent Ope
Inverter (with Inverter Power Control) { { Operation Limit for Cooling (°CDB) — Operation Limit for Heating (°CWB) PAM Control Compressor Oval Scroll Compressor Swing Compressor Rotary Compressor Reluctance DC Motor Comfortable Power-Airflow Flap Airflow Power-Airflow Dual Flaps Power-Airflow Diffuser Wide-Angle Louvers Vertical Auto-Swing (Up and Down) Horizontal Auto-Swing (Right and Left) 3-D Airflow 3-Step Airflow (H/P Only) Comfort Control — — — — — — — — — { — — — — Auto Fan Speed { — Indoo
{ — — — — PAM Control Compressor Oval Scroll Compressor Swing Compressor Rotary Compressor Reluctance DC Motor Comfortable Power-Airflow Flap Airflow Power-Airflow Dual Flaps Power-Airflow Diffuser Wide-Angle Louvers Vertical Auto-Swing (Up and Down) Horizontal Auto-Swing (Right and Left) 3-D Airflow 3-Step Airflow (H/P Only) — — — — — — { — { — — — — — — { — { { { — { — { — — Comfort Control Auto Fan Speed { { Indoor Unit Silent Operation Night Quiet Mode (Automatic) Outdoor Unit Silent
Category Basic Function Functions Inverter (with Inverter Power Control) Operation Limit for Cooling (°CDB) Operation Limit for Heating (°CWB) PAM Control Compressor Oval Scroll Compressor Swing Compressor Rotary Compressor Reluctance DC Motor Comfortable Power-Airflow Flap Airflow Power-Airflow Dual Flaps Power-Airflow Diffuser Wide-Angle Louvers Vertical Auto-Swing (Up and Down) Horizontal Auto-Swing (Right and Left) 3-D Airflow 3-Step Airflow (H/P Only) Comfort Control { –10 ~ 46 –15 ~ 15.
Inverter (with Inverter Power Control) Health & { Clean Operation Limit for Cooling (°CDB) — — — Operation Limit for Heating (°CWB) — — — PAM Control Compressor Oval Scroll Compressor Swing Compressor Rotary Compressor Reluctance DC Motor Comfortable Power-Airflow Flap Airflow Power-Airflow Dual Flaps Power-Airflow Diffuser Wide-Angle Louvers Vertical Auto-Swing (Up and Down) Horizontal Auto-Swing (Right and Left) 3-D Airflow 3-Step Airflow (H/P Only) Comfort Control Auto Fan Speed Indoor Unit Silent Ope
{ { Operation Limit for Cooling (°CDB) — — Operation Limit for Heating (°CWB) — — PAM Control Compressor Oval Scroll Compressor Swing Compressor Rotary Compressor Reluctance DC Motor Comfortable Power-Airflow Flap Airflow Power-Airflow Dual Flaps — — — — — — — — — — — — — — Power-Airflow Diffuser Wide-Angle Louvers Vertical Auto-Swing (Up and Down) Horizontal Auto-Swing (Right and Left) 3-D Airflow 3-Step Airflow (H/P Only) — { — — { { — — — — { — Auto Fan Speed { { Indoor Unit Si
List of Functions 18 Si12-308 List of Functions
Si12-308 Part 2 Specifications 1. Specifications ........................................................................................20 1.1 1.2 1.3 1.4 Specifications Indoor Units - Cooling Only ....................................................................20 Outdoor Units - Cooling Only .................................................................34 Indoor Units - Heat Pump.......................................................................41 Outdoor Units - Heat Pump ..................
Specifications Si12-308 1. Specifications 1.1 Indoor Units - Cooling Only Wall Mounted Type 50Hz 220-230-240V / 60Hz 220-230V Model Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain Fan mm mm kg kg FTKE25BVM 2.
Si12-308 Specifications 50Hz 220-230-240V / 60Hz 220-230V Model Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain Fan H M L SL W Steps A W % mm mm kg kg FTKD71BVM 7.1kW Class White 18.0 (635) 15.1 (533) 12.7 (448) 11.
Specifications Si12-308 Wall Mounted Type 50Hz 220-230-240V / 60Hz 220-230V Model Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain Fan H M L SL W Steps A W % mm mm kg kg Air Flow Rates Type Motor Output Speed Air Direc
Si12-308 Specifications 50Hz 220-230-240V / 60Hz 220-230V Model Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain Fan H M L SL W Steps A W % mm mm kg kg FTKD71BVMA 7.1kW Class White 18.3 (646) 15.3 (540) 12.7 (448) 11.
Specifications Si12-308 Wall Mounted Type 60Hz 220V Model Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain Fan H M L SL W Steps A W % mm mm kg kg Air Flow Rates Type Motor Output Speed Air Direction Control Air Filter
Si12-308 Specifications 60Hz 220V Model Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain Fan H M L SL W Steps A W % mm mm kg kg FTKD71BVMT 7.1kW Class White 16.6 (586) 13.9 (491) 11.7 (413) 10.
Specifications Si12-308 Wall Mounted Type 230V, 50Hz Model Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain Fan H M L SL W Steps A W % mm mm kg kg Air Flow Rates Type Motor Output Speed Air Direction Control Air Filter
Si12-308 Specifications 230V, 50Hz Model Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain Fan H M L SL W Steps A W % mm mm kg kg FTKS71BVMB 7.1kW Class White 16.7 (590) 14.2 (501) 11.6 (409) 10.
Specifications Si12-308 Duct Connected Type 50Hz 220-230-240V / 60Hz 220-230V Model Rated Capacity Front Panel Color Air Flow Rates CDK25AVM 2.
Si12-308 Specifications Duct Connected Type 50Hz 220-230-240V / 60Hz 220-230V Model Rated Capacity Front Panel Color Air Flow Rates CDK25AVMA 2.
Specifications Si12-308 Duct Connected Type 230V, 50Hz Model Rated Capacity Front Panel Color CDKS25BVMB 2.
Si12-308 Specifications Floor / Ceiling Suspended Dual Type 50Hz 220-230-240V / 60Hz 220-230V Model Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain Fan H M L SL W Steps A W % mm mm kg kg Air Flow Rates Type Motor Outp
Specifications Si12-308 Floor / Ceiling Suspended Dual Type 230V, 50Hz Model Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain Fan H M L SL W Steps A W % mm mm kg kg Air Flow Rates Type Motor Output Speed Air Direction
Si12-308 Specifications Floor Standing Type 230V, 50Hz Model Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain Fan H M L SL W Steps A W % mm mm kg kg Air Flow Rates Type Motor Output Speed Air Direction Control Air Filt
Specifications 1.2 Si12-308 Outdoor Units - Cooling Only 50Hz 220-230-240V / 60Hz 220-230V Model Cooling Capacity Power Consumption 3MKD58BVM — — — — — — Ivory White Hermetically Sealed Swing Type 2YC32WXD 980 SUNISO 4GSD.I. 0.65 R22 2.0 44 37 1,270 1,068 Propeller 53 H: 0.24 / L: 0.17 H: 44 / L: 27 6.9 735×936×300 960×357×784 55 59 46 φ 6.4×2 φ12.7×2 φ16.
Si12-308 Specifications 50Hz 220-230-240V / 60Hz 220-230V Model Cooling Capacity kW Power Consumption W Running Current Casing Color A Type Compressor Model Motor Output Model Refrigerant Oil Charge Type Refrigerant Charge W L m³/min Air Flow Rates cfm Fan Type Motor Output Running Current Power Consumption Starting Current Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation Sound Liquid Gas Drain Piping Connection kg H L H L W A W A mm mm kg kg dBA mm mm mm Heat Insulation N
Specifications Si12-308 50Hz 220-230-240V / 60Hz 220-230V Model Cooling Capacity kW 4MKD90BVM Power Consumption W Running Current Casing Color A Type Compressor Model Motor Output Model Refrigerant Oil Charge Type Refrigerant Charge L Air Flow Rates cfm Type Motor Output Running Current Power Consumption Starting Current Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation Sound Liquid Gas Drain Piping Connection Pale Ivory Hermetically Sealed Swing Type 2YC45ZXD 1,380 SUNISO 4G
Si12-308 Specifications 50Hz 220-240V / 60Hz 220-230V Model Cooling Capacity kW Power Consumption W Running Current Casing Color A Type Compressor Model Motor Output Model Refrigerant Oil Charge Type Refrigerant Charge W L m³/min Air Flow Rates cfm Fan Type Motor Output Running Current Power Consumption Starting Current Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation Sound Liquid Gas Drain Piping Connection kg H L H L W A W A mm mm kg kg dBA mm mm mm Heat Insulation No.
Specifications Si12-308 60Hz 220V Model Cooling Capacity kW Power Consumption W Running Current Casing Color A Type Compressor Model Motor Output Model Refrigerant Oil Charge Type Refrigerant Charge W L m³/min Air Flow Rates cfm Fan Type Motor Output Running Current Power Consumption Starting Current Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation Sound Piping Connection Liquid Gas Drain kg H L H L W A W A mm mm kg kg dBA mm mm mm Heat Insulation No.
Si12-308 Specifications 230V, 50Hz Model Cooling Capacity kW Power Consumption W Running Current Casing Color A Type Compressor Model Motor Output Model Refrigerant Oil Charge Type Refrigerant Charge W L m³/min Air Flow Rates cfm Fan Type Motor Output Running Current Power Consumption Starting Current Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation Sound Liquid Gas Drain Piping Connection kg H L H L W A W A mm mm kg kg dBA mm mm mm Heat Insulation No.
Specifications Si12-308 230V, 50Hz Model Cooling Capacity kW Power Consumption W Running Current Casing Color A Type Compressor Model Motor Output Model Refrigerant Oil Charge Type Refrigerant Charge W L m³/min Air Flow Rates cfm Fan Type Motor Output Running Current Power Consumption Starting Current Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation Sound Liquid Gas Drain Piping Connection kg H L H L W A W A mm mm kg kg dBA mm mm mm Heat Insulation No.
Si12-308 1.3 Specifications Indoor Units - Heat Pump Wall Mounted Type 50Hz 220V FTXE25BVMC Model Cooling Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimensions (W×D×H) Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain H M L SL W Steps A W % mm mm kg kg dBA mm mm mm 7.
Specifications Si12-308 50Hz 220V FTXD71BVMC Model Cooling Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimensions (W×D×H) Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain Fan Heating 7.1kW Class White H M L SL 18.0 (635) 15.1 (533) 12.7 (448) 11.
Si12-308 Specifications Wall Mounted Type 50Hz 220-230-240V / 60Hz 220-230V FTXE25BVMA Model Cooling Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain H M L SL W Steps A W % mm mm kg kg dBA mm mm mm 7.8 (275) 6.
Specifications Si12-308 50Hz 220-230-240V / 60Hz 220-230V FTXD71BVMA Model Cooling Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain Fan Heating 7.1kW Class White H M L SL W Steps A W % mm mm kg kg dBA mm mm mm 18.
Si12-308 Specifications Wall Mounted Type 60Hz 220V FTXE25BVMT Model Cooling Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain H M L SL W Steps A W % mm mm kg kg dBA mm mm mm 7.8 (275) 6.4 (226) 5.0 (177) 4.
Specifications Si12-308 60Hz 220V FTXD71BVMT Model Cooling Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain Fan Heating 7.1kW Class White H M L SL 16.6 (586) 13.9 (491) 11.7 (413) 10.
Si12-308 Specifications Wall Mounted Type 230V, 50Hz FTXS25BVMB Model Cooling Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain H M L SL W Steps A W % mm mm kg kg dBA mm mm mm 7.4 (261) 5.8 (205) 4.1 (145) 3.
Specifications Si12-308 230V, 50Hz FTXS71BVMB Model Cooling Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain Fan Heating 7.1kW Class White H M L SL 16.7 (590) 14.2 (501) 11.6 (409) 10.
Si12-308 Specifications Duct Connected Type 50Hz 220V CDX25BVMC Model Cooling Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) H M L SL W Steps A W % 10.4 (367) 9.6 (339) 8.7 (307) 8.1 (286) dBA Pa mm mm mm — 10.4 (367) 9.6 (339) 8.7 (307) 8.1 (286) 11.0 (388) 10.2 (360) 9.3 (328) 8.7 (307) Sirocco Fan 47 5 Steps, Silent and Auto 0.38 80 95.7 0.38 80 95.7 36/34/31/28 0.38 80 95.7 0.38 80 95.
Specifications Si12-308 Duct Connected Type 50Hz 220-230-240V / 60Hz 220-230V CDX25AVMA Model Cooling Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) H M L SL W Steps A W % mm mm kg kg dBA mm mm mm 13.0 (459) 12.0 (424) 11.0 (388) 9.3 (328) — 13.0 (459) 12.0 (424) 11.0 (388) 9.6 (339) Sirocco Fan 47 5 Steps, Silent and Auto 0.40-0.40-0.40/0.43-0.43 0.40-0.40-0.40/0.43-0.43 85-85-90/90-90 85-85-90/90-90 96.6-92.4-93.8/95.1-91.0 96.6-92.4-93.8/95.1-91.
Si12-308 Specifications Duct Connected Type 230V, 50Hz CDXS25BVMB Model Cooling Rated Capacity Front Panel Color Type Motor Output Speed H M L SL W Steps Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation A W % mm mm kg kg dBA Liquid Gas Drain mm mm mm 12.7 (448) 11.7 (413) 10.7 (378) 9.
Specifications Si12-308 Floor / Ceiling Suspended Dual Type 50Hz 220-230-240V / 60Hz 220-230V FLX25AVMA Model Cooling Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain H M L SL W Steps A W % mm mm kg kg dBA mm mm mm 7
Si12-308 Specifications Floor / Ceiling Suspended Dual Type 230V, 50Hz FLXS25BVMB Model Cooling Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain H M L SL W Steps A W % mm mm kg kg dBA mm mm mm 7.6 (268) 6.8 (240) 6.
Specifications Si12-308 Floor Standing Type 230V, 50Hz FVXS25BVMB Model Cooling Rated Capacity Front Panel Color Air Flow Rates m³/min (cfm) Type Motor Output Speed Air Direction Control Air Filter Running Current (Rated) Power Consumption (Rated) Power Factor Temperature Control Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation H/M/L/SL Sound Heat Insulation Liquid Piping Connection Gas Drain H M L SL W Steps A W % mm mm kg kg dBA mm mm mm 8.1 (286) 6.2 (219) 4.3 (152) 3.
Si12-308 1.4 Specifications Outdoor Units - Heat Pump 50Hz 220V 3MXD68BVMC Model Cooling kW Cooling Capacity Power Consumption W L m³/min Air Flow Rates cfm Fan Type Motor Output Running Current Power Consumption Starting Current Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation Sound Liquid Gas Drain Piping Connection kg H L H L W A W A mm mm kg kg dBA mm mm mm Heat Insulation No. of Wiring Connection Max. Interunit Piping Length Amount of Additional Charge Max.
Specifications Si12-308 50Hz 220-240V / 60Hz 220-230V 3MXD68BVMA Model Cooling kW Cooling Capacity Power Consumption W L m³/min Air Flow Rates cfm Fan Type Motor Output Running Current Power Consumption Starting Current Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation Sound Liquid Gas Drain Piping Connection kg H L H L W A W A mm mm kg kg dBA mm mm mm Heat Insulation No. of Wiring Connection Max. Interunit Piping Length Amount of Additional Charge Max.
Si12-308 Specifications 60Hz 220V 3MXD68BVMT Model Cooling kW Cooling Capacity Power Consumption W L m³/min Air Flow Rates cfm Fan Type Motor Output Running Current Power Consumption Starting Current Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation Sound Piping Connection Liquid Gas Drain kg H L H L W A W A mm mm kg kg dBA mm mm mm Heat Insulation No. of Wiring Connection Max. Interunit Piping Length Amount of Additional Charge Max.
Specifications Si12-308 230V, 50Hz 3MXS52BVMB Model Cooling kW Cooling Capacity Power Consumption W L m³/min Air Flow Rates cfm Fan Type Motor Output Running Current Power Consumption Starting Current Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation Sound Liquid Gas Drain Piping Connection kg H L H L W A W A mm mm kg kg dBA mm mm mm Heat Insulation No. of Wiring Connection Max. Interunit Piping Length Amount of Additional Charge Max.
Si12-308 Specifications 230V, 50Hz 4MXS80BVMB Model Cooling — — — W A Running Current Casing Color Type Compressor Model Motor Output Model Refrigerant Oil Charge Type Refrigerant Charge L Air Flow Rates cfm Type Motor Output Running Current Power Consumption Starting Current Dimensions (H×W×D) Packaged Dimension Weight Gross Weight Operation Sound Liquid Gas Drain Piping Connection kg H L H L W A W A mm mm kg kg dBA mm mm mm Heat Insulation No. of Wiring Connection Max.
Specifications 60 Si12-308 Specifications
Si12-308 Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram..................................62 1.1 1.2 1.3 1.4 1.5 1.6 Wall Mounted Type 25 / 35 Class ..........................................................62 Wall Mounted Type 50 / 60 / 71 Class ...................................................65 Floor / Ceiling Suspended Dual Type.....................................................67 Duct Connected Type...........................................
Printed Circuit Board Connector Wiring Diagram Si12-308 1. Printed Circuit Board Connector Wiring Diagram 1.
Si12-308 Printed Circuit Board Connector Wiring Diagram PCB PCB(1) Control SW7 S1 PCB (2) Signal reciever 5V Check V1 5V S27 S7 JP21 JA JB JC PCB (3) Intelligent eye sensor 12V Check 12V GND S21 S6 GND S35 JA JB JC S32 S26 (R2413) Printed Circuit Board Connector Wiring Diagram 63
Printed Circuit Board Connector Wiring Diagram Si12-308 PCB Detail 64 Printed Circuit Board Connector Wiring Diagram
Si12-308 1.
Printed Circuit Board Connector Wiring Diagram PCB Detail Si12-308 PCB(1): Control PCB (indoor unit) S1 V1 FU1 S21 S6 S8 S35 JA JB JC PCB(2): Signal Receiver PCB S32 S28 S26 (R2860) PCB(3): Buzzer PCB S27 SW1 S38 S29 (R2861) RTH1 PCB(4): Display PCB LED1 LED2 (R2862) PCB(5): Intelligent Eye sensor PCB LED3 S37 (R2863) S36 (R2864) 66 Printed Circuit Board Connector Wiring Diagram
Si12-308 1.3 Printed Circuit Board Connector Wiring Diagram Floor / Ceiling Suspended Dual Type Connectors 1) S6 2) S7 3) S8 4) S21 5) S24 6) S25, S27, S36 7) S26 8) S31 9) S32 10) S37 Note: Connector for Swing Motor (Horizontal Swing) Connector for Fan Motor Connector for Swing Motor (Vertical Swing) Connector for Centralized Control Connector for Display PCB Connector for Control PCB Connector for Signal Receiver PCB Connector for Room Temp.
Printed Circuit Board Connector Wiring Diagram Si12-308 Power Supply PCB (PCB 2) Display PCB (PCB 3) Signal Receiver PCB (PCB 4) 68 Printed Circuit Board Connector Wiring Diagram
Si12-308 1.
Printed Circuit Board Connector Wiring Diagram 1.
Si12-308 Printed Circuit Board Connector Wiring Diagram Control PCB (PCB 2) Display PCB (PCB 3) Signal Receiver PCB (PCB 4) Printed Circuit Board Connector Wiring Diagram 71
Printed Circuit Board Connector Wiring Diagram 1.
Si12-308 Part 4 Function and Control 1. Main Functions......................................................................................74 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 Frequency Principle................................................................................74 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing ..........76 Fan Speed Control for Indoor Units........................................................77 Programme Dry Function ...................................
Main Functions Si12-308 1. Main Functions Note: 1.1 See the list of functions for the functions applicable to different models. Frequency Principle Main Control Parameters Additional Control Parameters Inverter Principle Drawing of Inverter The compressor is frequency-controlled during normal operation.
Si12-308 Inverter Features Main Functions The inverter provides the following features: The regulating capacity can be changed according to the changes in the outdoor air temperature and cooling / heating load. Quick heating and quick cooling The compressor rotational speed is increased when starting the heating (or cooling). This enables a quick set temperature.
Main Functions 1.2 Si12-308 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing Power-airflow Dual Flaps The large flaps send a large volume of air downwards to the floor. The flap provides an optimum control area in cooling, heating and dry mode. Heating Mode During heating mode, the large flap enables direct warm air straight downwards. The flap presses the warm air above the floor to reach the entire room. Cooling Mode During cooling mode, the flap retracts into the indoor unit.
Si12-308 1.3 Main Functions Fan Speed Control for Indoor Units Control Mode The airflow rate can be automatically controlled depending on the difference between the set temperature and the room temperature. This is done through phase control and hall IC control. For more information about hall IC, refer to the troubleshooting for fan motor on page 176. Phase Steps Phase control and fan speed control contains 9 steps: LLL, LL, SL, L, ML, M, MH, H and HH.
Main Functions 1.4 Si12-308 Programme Dry Function Programme dry function removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and air flow volume, the temperature adjustment and fan adjustment buttons are inoperable in this mode. In Case of Inverter Units The microcomputer automatically sets the temperature and fan settings.
Si12-308 1.5 Main Functions Automatic Operation Automatic Cooling / Heating Function (Heat Pump Only) When the AUTO mode is selected with the remote controller, the microcomputer automatically determines the operation mode from cooling and heating according to the room temperature and setting temperature at the time of the operation startup, and automatically operates in that mode.
Main Functions 1.6 Si12-308 Night Set Mode When the OFF timer is set, the Night Set circuit automatically activates. The Night Set circuit maintains the airflow setting made by users. The Night Set Circuit The Night Set circuit continues heating or cooling the room at the set temperature for the first one hour, then automatically lowers the temperature setting slightly in the case of cooling, or raises it slightly in the case of heating, for economical operations.
Si12-308 1.7 Main Functions Intelligent Eye This is the function that detects existence of humans in the room by a human motion sensor (Intelligent Eye) and reduces the capacity when there is no human in the room in order to save electricity. Processing 1. Detection method by Intelligent Eye sampling (20msec) Sensor output 1sec If the sensor detects the outputs 10 times/sec. or more, it judges humans exist.
Main Functions Si12-308 Since the set temperature is shifted by 2°C higher for 40 minutes, compressor speed becomes low and can realize energy saving operation. But as thermostat is prone to be off by the fact that the set temperature has been shifted, the thermostat-off action is prohibited in 40 minutes so as to prevent this phenomena.
Si12-308 1.8 Main Functions Home Leave Operation Outline In order to respond to the customer's need for immediate heating and cooling of the room after returning home or for house care, a measure to switch the temperature and air volume from that for normal time over to outing time by one touch is provided. (This function responds also to the need for keeping up with weak cooling or heating.
Main Functions 1.9 Si12-308 Inverter Powerful Operation Outline In order to exploit the cooling and heating capacity to full extent, operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency. Details of the Control When Powerful button is pushed in each operation mode, the fan speed / setting temperature will be converted to the following states in a period of twenty minutes. In case of Wall Mounted Type 50 / 60 / 71 Class.
Si12-308 Main Functions 1.10 Other Functions 1.10.1 Hot Start Function Heat Pump Only In order to prevent the cold air blast that normally comes when heating is started, the temperature of the heat exchanger of the indoor unit is detected, and either the air flow is stopped or is made very weak thereby carrying out comfortable heating of the room. *The cold air blast is also prevented using a similar control when the defrosting operation is started or when the thermostat gets turned ON. 1.10.
Main Functions Si12-308 1.10.8 Self-Diagnosis Digital Display The microcomputer continuously monitors main operating conditions of the indoor unit, outdoor unit and the entire system. When an abnormality occur, the LCD remote controller displays error code. These indications allow prompt maintenance operations. 1.10.
Si12-308 Function of Main Structural Parts 2. Function of Main Structural Parts 2.1 Main Structural Parts 1. Compressor A Swing compressor, being operated by INV control. Heat Pump Model 4 Expansion valve Receiver EVA EVB EVC EVD SV D 3 Solenoid valve 2 Four-way valve (R2433) 1 Compressor Cooling Only Model 4 Expansion valve EVA EVB EVC EVD 1 Compressor Note: Function and Control (R2434) 1. Expansion Valve : In Case of 2MK(X).....EVA-B, 3MK(X).....EVA-C, 4MK(X).....EVA-D, 2.
Function of Main Structural Parts 2.2 Si12-308 Function of Thermistor 2.2.1 Heat Pump Model E 4 Expansion valve EVA A EVB EVC EVD Receiver SV D 3 Solenoid valve 2 Four-way valve D B 1 Compressor C (R2435) A Outdoor Heat Exchanger Thermistor (DCB) 1. An outdoor heat exchanger thermistor is used for controlling a target discharge temperature. Set a target discharge temperature depending on an outdoor and indoor heat exchanger temperature.
Si12-308 Function of Main Structural Parts D Indoor Heat Exchanger Thermistor (DCN) 1. An indoor heat exchanger thermistor is used for controlling target discharge pipe temperature. Set a target discharge pipe temperature according to the outdoor and indoor heat exchanger temperature. Control the electronic expansion valve so that the target discharge pipe temperature can be obtained. 2. An indoor heat exchanger thermistor is used to prevent freezing.
Function of Main Structural Parts Si12-308 2.2.2 Cooling Only Model 4 Expansion valve EVA EVB A EVC EVD B D 1 Compressor C (R2436) A Outdoor Heat Exchanger Thermistor (DCB) 1. An outdoor heat exchanger thermistor is used for controlling a target discharge temperature. Set a target discharge temperature depending on an outdoor and indoor heat exchanger temperature. Control the electronic expansion valve opening so that the target discharge temperature can be obtained. 2.
Si12-308 Function of Main Structural Parts D Indoor Heat Exchanger Thermistor (DCN) 1. An indoor heat exchanger thermistor is used for controlling target discharge pipe temperature. Set a target discharge pipe temperature according to the outdoor and indoor heat exchanger temperature. Control the electronic expansion valve opening so that the target discharge pipe temperature can be obtained. 2. An indoor heat exchanger thermistor is used to prevent freezing.
Control Specification Si12-308 3. Control Specification 3.1 Mode Hierarchy Outline There are two modes; the mode selected in user’s place (normal air conditioning mode) and forced operation mode for installation and providing service. Detail Air Conditioner’s Control Mode 1.
Si12-308 3.2 Control Specification Frequency Control Outline Frequency that corresponds to each room’s capacity will be determined according to the difference in the temperature of each room and the temperature that is set by the remote controller. The function is explained as follows. 1. How to determine frequency. 2. Frequency command from an indoor unit. (The difference between a room temperature and the temperature set by the remote controller.) 3. Frequency command from an indoor unit.
Control Specification Si12-308 2. Determine upper limit frequency Set a minimum value as an upper limit frequency among the frequency upper limits of the following functions: Compressor protection, input current, discharge pipes, freeze-up protection, dew prevention, fin thermistor temperature. 3. Determine lower limit frequency Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions: Pressure difference upkeep. 4.
Si12-308 3.3 Control Specification Controls at Mode Changing / Start-up 3.3.1 Preheating Operation Outline Operate the inverter in the open phase operation with the conditions including the preheating command (only for heat pump model) from the indoor, the outdoor air temperature and discharge pipe temperature. Detail Preheating ON Condition When outdoor air temperature is below 10.5°C and discharge pipe temperature is below 10.5°C, inverter in open phase operation starts.
Control Specification 3.4 Si12-308 Discharge Pipe Control Outline The discharge pipe temperature is used as the compressor's internal temperature. If the discharge pipe temperature rises above a certain level, the operating frequency upper limit is set to keep this temperature from going up further. Detail Divide the Zone Management within the Zone Zone Stop zone Drooping zone Unchanged zone Return / Reset zone 3.
Si12-308 3.6 Control Specification Freeze-up Protection Control Outline During cooling operation, the signals being sent from the indoor unit allow the operating frequency limitation and then prevent freezing of the indoor heat exchanger. (The signal from the indoor unit must be divided into the zones as the followings.
Control Specification 3.8 Si12-308 Fan Control Outline Fan control is carried out according to the following priority. 1. Fan ON control for electric component cooling fan 2. Fan control when defrosting 3. Fan OFF delay when stopped 4. ON/OFF control when cooling operation 5. Fan control when the number of heating rooms decreases 6. Tap control when drooping function is working 7. Fan control when forced operation 8. Fan control in indoor / outdoor silent operation 9.
Si12-308 Control Specification 3.10 Defrost Control Outline Heat Pump Only Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor heat exchanger temperature must be more than its fixed value when finishing. Detail Conditions for Starting Defrost The starting conditions must be made with the outdoor air temperature and heat exchanger temperature.
Control Specification Si12-308 3.12 Electronic Expansion Valve Control Outline 100 The following items are included in the electronic expansion valve control. Electronic expansion valve is fully closed 1. Electronic expansion valve is fully closed when turning on the power. 2. Pressure equalizing control Room Distribution Control 1. Gas pipe isothermal control 2. SC control (Only for Heat Pump Model) Open Control 1. Electronic expansion valve control when starting operation 2.
Si12-308 Control Specification Control when frequency changed Control for abnormally high discharge pipe temperature Oil recovery control Indoor freeze-up protection control Liquid pipe temperature control Liquid pipe temperature control for stopped rooms Dew prevention control for indoor rotor Operation pattern SC control (only for heat pump model) The followings are the examples of control which function in each mode by the electronic expansion valve control.
Control Specification Si12-308 3.12.1 Fully Closing with Power ON Initialize the electronic expansion valve when turning on the power, set the opening position and develop pressure equalizing. 3.12.2 Pressure Equalization Control When the compressor is stopped, open and close the electronic expansion valve and develop pressure equalization. 3.12.3 Opening Limit Outline Limit a maximum and minimum opening of the electronic expansion valve in the operating room.
Si12-308 Control Specification 3.12.8 Target Discharge Pipe Temperature Control Obtain the target discharge pipe temperature from the indoor and outdoor heat exchange temperature, and adjust the electronic expansion valve opening so that the actual discharge pipe temperature become close to that temperature.
Control Specification Si12-308 3.12.11Control when frequency is changed When the target pipe temperature control is active, if the target frequency is changed for a specified value in a certain time period, cancel the target discharge pipe temperature control and change the opening of the target electronic expansion valve according to the shift.
Si12-308 Control Specification 3.13 Malfunctions 3.13.1 Sensor Malfunction Detection Sensor malfunction may occur either in the thermistor or current transformer (CT) system. Relating to Thermistor Malfunction 1. Outdoor heat exchanger thermistor 2. Discharge pipe thermistor 3. Fin thermistor 4. Gas pipe thermistor 5. Outdoor air temperature thermistor 6. Liquid pipe thermistor Relating to CT Malfunction When the output frequency is more than 55 Hz and the input current is less than 1.
Control Specification Detail Si12-308 Judgment by Input Current When an output frequency is exceeds 55 Hz and the input current is less than specified value, the adjustment is made for insufficient gas. Judgment by Discharge Pipe Temperature When discharge pipe temperature is 20°C higher than target value and the electronic expansion value opening is 450 plus (max.), the adjustment is made for insufficient gas. 3.13.
Si12-308 Control Specification 3.15 Wiring-Error Check Outline The convenient Wiring Error Check function is designed for the microcomputer to correct wiring errors itself. If local wiring is unclear in the case of buried piping, for example, just press the wiring error check switch that is behind the right-hand panel of the outdoor unit. Even if the connections for Room A and Room B are confused, the system may run without a hassle. Note that this check function does not work in the following cases.
Control Specification Si12-308 Checking the current setting data on the microcomputer memory Those data can be checked by looking at the service monitor LED indicators, when the wiring error checking is over, during forced operation, at the stop of the system. The LED indicators stop flashing when the forced operation is over. LED1…Room A wiring, LED2…Room B wiring 1st flashing LED…Port A piping, 2nd flashing LED…Port B piping The first stay-on LED means the room that is connected with Port A.
Si12-308 Control Specification 3.16 Additional Function 3.16.1 Connection Pipe Condensation Preventing Function This control is intended to adjust the electronic expansion valve opening so that the outdoor unit gas pipe temperature (GDN) be kept below 8°C. 3.16.2 Priority Room Setting Electronic expansion valves are controlled to provide the unit designated as the priority room with the capacity of other room units. (Distribution of capacity: Priority room unit --- ∆D Max.
Control Specification Si12-308 3.16.5 Cooling / Heating Mode Lock Use the S100 connector to set the unit to only cool or heat. Setting to only cool (C): Short-circuit pins 1 and 3 of the connector . Setting to only heat (H): short-circuit pins 3 and 5 of the connector . The following specifications apply to the connector housing and pins. JST products Housing: VHR-5N Pin: SVH-21T-1, 1 Note that forced operation is also possible in COOL / HEAT mode.
Si12-308 Part 5 System Configuration 1. System Configuration..........................................................................112 1.1 Operation Instructions ..........................................................................112 2. Instruction............................................................................................113 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 2.14 System Configuration Manual Contents by the Models............................................
System Configuration Si12-308 1. System Configuration 1.1 Operation Instructions After the installation and test operation of the room air conditioner have been completed, it should be operated and handled as described below. Every user would like to know the correct method of operation of the room air conditioner, to check if it is capable of cooling (or heating) well, and to know a clever method of using it.
Si12-308 Instruction 2. Instruction Note: 2.1 This instruction is appropriate for R22 models.
Instruction 2.2 Si12-308 Safety Precautions Safety precautions • • • • Keep this manual where the operator can easily find them. Read this manual attentively before starting up the unit. For safety reason the operator must read the following cautions carefully. This manual classifies precautions into WARNINGS and CAUTIONS. Be sure to follow all precautions below: they are all important for ensuring safety.
Si12-308 Instruction • Do not stand or sit on the outdoor unit. Do not place any object on the unit to avoid injury, do not remove the fan guard. • Do not place anything under the indoor or outdoor unit that must be kept away from moisture. In certain conditions, moisture in the air may condense and drip. • After a long use, check the unit stand and fittings for damage. • Do not touch the air inlet and aluminum fins of outdoor unit. It may cause injury.
Instruction 2.
Si12-308 Instruction ■ Outdoor Unit 17 22 19 20 21 18 ■ Indoor Unit 1. Air filter 2. Photocatalytic deodorizing filter or Air purifying filter: • These filters are attached to the inside of the air filters. 12. Indoor Unit ON/OFF switch: • Push this switch once to start operation. Push once again to stop it. • The operation mode refers to the following table. 3. Air inlet 4. Front grille FTKE FTXE 5. Grille tab 6. Room temperature sensor: • It senses the air temperature around the unit. 7.
Instruction Si12-308 ■ Remote Controller 1 ON 2 C 5 HOME LEAVE ON/OFF 3 POWERFUL TEMP 6 4 7 MODE SILENT FAN SWING SENSOR 8 12 9 10 11 ON CANCEL 15 16 OFF TIMER 14 13 < ARC433A1, A2 > 1. Signal transmitter: • It sends signals to the indoor unit. 2. Display: • It displays the current settings. (In this illustration, each section is shown with all its displays ON for the purpose of explanation.) 3. HOME LEAVE button: for HOME LEAVE operation 4. POWERFUL button: for POWERFUL operation 5.
Si12-308 Instruction FTK(X)D 50/60/71 B Names of parts ■ Indoor Unit 4 5 3 2 9 10 1 8 6 7 11 12 14 13 ■ Main unit control panel 16 15 System Configuration 119
Instruction n Si12-308 Outdoor Unit 17 19 20 21 18 n Indoor Unit 1. Air filter 2. Photocatalytic deodorizing filter or Air purifying filter: 2These filters are attached to the inside of the air filters. 3. Air inlet 4. Front grille 13. HOME LEAVE lamp (red): 2Lights up when you use HOME LEAVE Operation. 14. Indoor Unit ON/OFF switch: 2Push this switch once to start operation. Push once again to stop it. 2The operation mode refer to the following table. 5. Grille tab 6.
Si12-308 Instruction ■ Remote Controller 1 ON 2 C 5 HOME LEAVE ON/OFF 3 POWERFUL TEMP 6 4 7 MODE SILENT FAN SENSOR SWING 8 13 ON 9 11 10 12 CANCEL 16 OFF 17 TIMER 15 14 < ARC433A21, A22 > 1. Signal transmitter: • It sends signals to the indoor unit. 2. Display: • It displays the current settings. (In this illustration, each section is shown with all its displays ON for the purpose of explanation.) 3. HOME LEAVE button: for HOME LEAVE operation 4.
Instruction Si12-308 CDK(X) 25/35/50/60 A Names of parts ■ Indoor Unit 1 5 2 4 3 6 8 7 9 10 122 System Configuration
Si12-308 Instruction ■ Outdoor Unit 11 12 13 15 14 ■ Indoor Unit 1. Air outlet 2. Air outlet grille (Field supply) • Appearance of the Air outlet grille and Air inlet grille may differ with some models. 3. Display, Control panel 4. Suction grille (Option) • Appearance of the suction grille and Air inlet grille may differ with some models. 10. Indoor Unit ON/OFF switch • Push this switch once to start operation. Push once again to stop it.
Instruction Si12-308 ■ Remote Controller 1 ON 2 C 5 HOME LEAVE ON/OFF 3 POWERFUL TEMP 6 4 9 7 MODE SILENT FAN 8 10 ON CANCEL 13 14 OFF TIMER 12 11 < ARC433A7, A8 > 1. Signal transmitter: • It sends signals to the indoor unit. 2. Display: • It displays the current settings. (In this illustration, each section is shown with all its displays ON for the purpose of explanation.) 8. SILENT button: for OUTDOOR UNIT SILENT operation 9.
Si12-308 Instruction FLK(X) 25/35/50/60 A Names of parts ■ Indoor Unit The indoor unit can be installed either to the ceiling or to a wall. The descriptions contained in this manual show the case when installation is being carried out to the ceiling. (The methods of operation used are the same when installing to a wall.) 3 2 1 4 ON OFF 5 9 8 7 6 11 10 12 14 13 CAUTION • Before opening the front grille, be sure to stop the operation and turn the breaker OFF.
Instruction n Si12-308 Outdoor Unit 15 17 18 19 16 n Indoor Unit 1. Louvres (vertical blades) The louvres are inside of the air outlet. 2. Air outlet 3. Flap (horizontal blade) 4. Grille tab 5. Air inlet 6. Display 7. Air filter 8. Photocatalytic deodorizing filter or Air purifying filter: 2 These filters are attached to the inside of the air filters. 9. Front grille 10. Operation lamp (green) 11. TIMER lamp (orange) 13. Indoor unit ON/OFF switch 2 Push this switch once to start operation.
Si12-308 Instruction ■ Remote Controller 1 ON 2 C 5 HOME LEAVE ON/OFF 3 POWERFUL TEMP 6 4 7 MODE SILENT FAN SWING 9 10 CANCEL 14 8 11 ON 15 OFF TIMER 13 12 < ARC433A5, A6 > 1. Signal Transmitter: • It sends signals to the indoor unit. 2. Display: • It displays the current settings. (In this illustration, each section is shown with all its displays ON for the purpose of explanation.) 3. HOME LEAVE button: for HOME LEAVE operation 4. POWERFUL button: for POWERFUL operation 5.
Instruction 2.4 Si12-308 Preparation before Operation Preparation Before Operation ■ To set the batteries 1. Press with a finger and slide the front cover to take it off. Position + and – correctly! 2 – + + 2. Set two dry batteries (AAA). – 3. Set the front cover as before. 3 1 ATTENTION ■ About batteries • When replacing the batteries, use batteries of the same type, and replace the two old batteries together. • When the system is not used for a long time, take the batteries out.
Si12-308 Instruction Preparation Before Operation ■ To operate the remote controller • To use the remote controller, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote controller, such as a curtain, the unit will not operate. • Do not drop the remote controller. Do not get it wet. • The maximum distance for communication is about 7 m. Receiver ■ To fix the remote controller holder on the wall 1.
Instruction Si12-308 ■ To set the clock 1. Press “CLOCK button”. is displayed. C blinks. 2. Press “TIMER setting button” to set the clock to the present time. Holding down “ ” or “ ” button rapidly increases or decreases the time display. 3. Press “CLOCK button”. blinks. HOME LEAVE ON/OFF POWERFUL TEMP MODE SILENT FAN ON ■ Turn the breaker ON • Turning ON the breaker opens the flap, then closes it again. (This is a normal procedure.) SWING SENSOR 2 CANCEL 1.
Si12-308 2.5 Instruction AUTO · DRY · COOL · HEAT · FAN Operation AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode. ■ To start operation C 1. Press “MODE selector button” and select a operation mode. • Each pressing of the button advances the mode setting in sequence.
Instruction Si12-308 ■ To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode Five levels of air flow rate setting from “ The air flow rate setting is not variable. plus “ ”“ ” to “ ” ” are available. • Indoor unit quiet operation When the air flow is set to “ ”, the noise from the indoor unit will become quieter. Use this when making the noise quieter. The unit might lose power when the fan strength is set to a weak level.
Si12-308 2.6 Instruction Adjusting the Air Flow Direction FTK(X)E 25/35 B Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. ■ To adjust the horizontal blades (flaps) ON C 1. Press “SWING button”. The display will light up and the flaps will begin to swing. 2. When the flaps have reached the desired position, press “SWING button” once more. The display will go blank. The flaps will stop moving.
Instruction Si12-308 ■ To adjust the vertical blades (louvres) Hold the knob and move the louvres. (You will find a knob on the left-side and the right-side blades.) Notes on flaps and louvres angles • When “ SWING button ” is selected, the flaps swinging range depends on the operation mode. (See the figure.) ■ ATTENTION • Always use a remote controller to adjust the flaps angle. If you attempt to move it forcibly with hand when it is swinging, the mechanism may be broken.
Si12-308 Instruction FTK(X)D 50/60/71 B Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. ■ To adjust the horizontal blade (flap) ON C 1. Press “SWING button”. The display will light up and the flap will begin to swing. 2. When the flap have reached the desired position, press “SWING” button once more. The display will go blank. The flap will stop moving.
Instruction Si12-308 ■ To 3-D Airflow 1. 3. press “SWING button”: the “ ” “ the flaps and louvers will move in turn. ” display will light up and ■ To cancel 3-D Airflow 2. 4. press “SWING button” Notes on louvers angles ■ ATTENTION • Always use a remote controller to adjust the louvers angles. In side the air outlet, a fan is rotating at a high speed. Notes on flap angle • When “SWING button” is selected, the flaps swinging range depends on the operation mode. (See the figure.
Si12-308 Instruction FLK(X) 25/35/50/60 A Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. ■ To adjust the horizontal blade (flap) ON C 1. Press “SWING button”. The display will light up and the flaps will begin to swing. 2. When the flaps have reached the desired position, press “SWING button” once more. The display will go blank. The flaps will stop moving.
Instruction Si12-308 ■ To adjust the vertical blades (louvres) • When adjusting the louvre, use a robust and stable stool and watch your steps carefully. Hold the knob and move the louvres. (You will find a knob on the left side and the right side blades.) Notes on flap and louvres angles • Unless [SWING] is selected, you should set the flap at a near- horizontal angle in COOL or DRY mode to obtain the best performance.
Si12-308 2.7 Instruction POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity . ■ To start POWERFUL operation ON 1. Press “POWERFUL button”. • POWERFUL operation ends in 20 minutes. Then the system automatically operates again with the settings which were used before POWERFUL operation. • When using POWERFUL operation, there are some functions which are not available.
Instruction 2.8 Si12-308 OUTDOOR UNIT SILENT Operation OUTDOOR UNIT SILENT Operation OUTDOOR UNIT SILENT operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. ■ To start OUTDOOR UNIT SILENT operation C 1. Press “SILENT button”. ■ To cancel OUTDOOR UNIT SILENT operation HOME LEAVE ON/OFF POWERFUL TEMP MODE SILENT FAN 2. Press “SILENT button” again.
Si12-308 2.9 Instruction HOME LEAVE Operation HOME LEAVE Operation HOME LEAVE operation is a function which allows you to record your preferred temperature and air flow rate settings. ■ To start HOME LEAVE operation 1. Press “HOME LEAVE button” . • The HOME LEAVE lamp lights up. C ON OFF ■ To cancel HOME LEAVE operation 1, 2 HOME LEAVE ON/OFF POWERFUL TEMP MODE SILENT FAN 2. Press “HOME LEAVE button” again. • The HOME LEAVE lamp goes off.
Instruction Si12-308 ■ What’s the HOME LEAVE operation Is there a set temperature and air flow rate which is most comfortable, a set temperature and air flow rate which you use the most? HOME LEAVE operation is a function that allows you to record your favorite set temperature and air flow rate. You can start your favorite operation mode simply by pressing the HOME LEAVE button on the remote control. This function is convenient in the following situations. ■ Useful in these cases. 1.
Si12-308 Instruction 2.10 INTELLIGENT EYE Operation FTK(X)E 25/35 B INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. ■ To start INTELLIGENT EYE operation C 1. Press “SENSOR button”. ■ To cancel the INTELLIGENT EYE operation HOME LEAVE ON/OFF POWERFUL TEMP MODE SILENT FAN 2. Press “SENSOR button” again. [EX.] SWING SENSOR 1, 2 When somebody in the room • Normal operation ON CANCEL OFF TIMER When nobody in the room • 20 min.
Instruction Si12-308 ■ To adjust the angle of the INTELLIGENT EYE sensor • You can adjust the angle of the INTELLIGENT EYE sensor to increase the detection area. (Adjustable angle: 15° to right and left of centre) 15˚ 15˚ • Gently push and slide the sensor to adjust the angle. • After adjusting the angle, wipe the sensor gently with a clean cloth, being careful not to scratch the sensor.
Si12-308 Instruction FTK(X)D 50/60/71 B INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. ■ To start INTELLIGENT EYE operation C 1. Press “SENSOR button”. ■ To cancel the INTELLIGENT EYE operation HOME LEAVE POWERFUL ON/OFF TEMP 2. Press “SENSOR button” again. MODE SILENT [EX.] FAN SENSOR SWING 1, 2 When somebody in the room ON • Normal operation CANCEL OFF TIMER When nobody in the room • 20 min. after, start energy saving operation.
Instruction Si12-308 “INTELLIGENT EYE” is useful for Energy Saving ■ Energy saving operation • Change the temperature –2°C in heating / +2°C in cooling / +1°C in dry mode from set temperature. • Decrease the air flow rate slightly in fan operation. (In FAN mode only) Notes on “INTELLIGENT EYE” • Application range is as follows. Vertical angle 90˚ (Side View) Horizontal angle 110˚ (Top View) 90˚ 7m 55˚ 55˚ 7m • Sensor may not detect moving objects further than 7m away.
Si12-308 Instruction 2.11 TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. ■ To use OFF TIMER operation C • Check that the clock is correct. If not, set the clock to the present time. 1. Press “OFF TIMER button”. is displayed. HOME LEAVE ON/OFF POWERFUL TEMP MODE SILENT FAN blinks. 2.
Instruction Si12-308 ■ To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. 1. Press “ON TIMER button”. is displayed. C blinks. 2. Press “TIMER Setting button” until the time setting reaches the point you like. • Every pressing of either button increases or decreases the time setting by 10 minutes. Holding down either button changes the setting rapidly. 3. Press “ON TIMER button” again.
Si12-308 Instruction 2.12 Note for Multi System Note for Multi System 〈〈 What is a “Multi System”? 〉〉 This system has one outdoor unit connected to multiple indoor units. ■ Selecting the Operation Mode A room Outdoor unit 1. With the Priority Room Setting present but inactive or not present B room Living room C room When more than one indoor unit is operating, priority is given to the first unit that was turned on.
Instruction Si12-308 ■ Priority Room Setting The Priority Room Setting requires initial programming during installation. Please consult your retailer or dealer for assistance. The room designated as the Priority Room takes priority in the following situations; 1. Operation Mode Priority As the operation mode of the Priority Room takes precedence, the user can select a different operation mode from other rooms. 〈Example〉 * Room A is the Priority Room in the examples.
Si12-308 Instruction 2.13 Care and Cleaning FTK(X)E 25/35 B Care and Cleaning CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. Units ■ Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. ■ Front grille 1. Open the front grille. • Hold the grille by the tabs on the two sides and lift it unitl it stops with a click. 2. Remove the front grille.
Instruction Si12-308 Filters 1. Open the front grille. 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the air purifying filter, photocatalytic deodorizing filter. • Hold the recessed parts of the frame and unhook the four claws. Air purifying filter or photocatalytic deodorizing filter 4. Clean or replace each filter. See below. 5.
Si12-308 Instruction Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded. Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit. Check that the earth wire is not disconnected or broken. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation. • If no drain water is seen, water may be leaking from the indoor unit. Stop operation and consult the service shop if this is the case.
Instruction Si12-308 FTK(X)D 50/60/71 B Care and Cleaning CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. Units ■ Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. ■ Front grille 1. Open the front grille. • Hold the grille by the tabs on the two sides and lift it until it stops with a click. 2. Remove the front grille. • Open the front panel further while sliding it to either the left or right and pulling it toward you.
Si12-308 Instruction Filters 1. Open the front grille. 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the air purifying filter with photocatalytic deodorizing function. • Press the top of the air-cleaning filter onto the tabs (3 tabs at top). Then press the bottom of the filter up slightly, and press it onto the tabs (3 at bottom). tabs (3 tabs at top) tabs (3 at bottom) 4. Clean or replace each filter. See below. 5.
Instruction Si12-308 Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded. Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit. Check that the earth wire is not disconnected or broken. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation. • If no drain water is seen, water may be leaking from the indoor unit. Stop operation and consult the service shop if this is the case.
Si12-308 Instruction CDK(X) 25/35/50/60 A Care and Cleaning CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. ■ Cleaning the air filter and suction grille (Option) • Be sure always to clean the unit before use at the beginning of summer and winter. (Dirt and dust caught in the air filter cause a drop in airflow, which leads to a decline in performance.) • When using the unit in a location where dirt may easily accumulate, clean the unit more frequently.
Instruction Si12-308 FLK(X) 25/35/50/60 A Care and Cleaning CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. Units ■ Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. ■ Front grille 1. Open the front grille. • Hold the grille by the tabs on the two sides and lift it unitl it stops. ON OFF 2. Clean the front grille • Wipe it with a soft cloth soaked in water. • Only neutral detergent may be used.
Si12-308 Instruction Filters 1. Open the front grille. 2. Pull out the air filters. • Push upwards the tab at the center of each air filter, then pull it down. ON OFF 3. Take off the air purifying filter, photocatalytic deodorizing filter. • Hold the recessed parts of the frame and unhook the four claws. ON OFF 4. Clean or replace each filter. See below. Air purifying filter or Photocatalytic deodorizing filter 5.
Instruction Si12-308 Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded. Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit. Check that the earth wire is not disconnected or broken. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation. • If no drain water is seen, water may be leaking from the indoor unit. Stop operation and consult the service shop if this is the case.
Si12-308 Instruction 2.14 Trouble Shooting Trouble Shooting These cases are not troubles. The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Explanation Operation does not start soon. • When ON/OFF button was pressed soon after operation was stopped. • When the mode was reselected. • This is to protect the air conditioner. You should wait for about 3 minutes. Hot air does not flow out soon after the start of heating operation.
Instruction Si12-308 Check again. Please check again before calling a repair person. Case The air conditioner does not operate. (OPERATION lamp is off) Check • Hasn’t a breaker turned OFF or a fuse blown? • Isn’t it a power failure? • Are batteries set in the remote controller? • Is the timer setting correct? Cooling (Heating) effect is poor.
Si12-308 Instruction Call the service shop immediately. WARNING ■When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner. ■Do not attempt to repair or modify the air conditioner by yourself. Incorrect work may result in electric shocks or fire. Consult the service shop where you bought the air conditioner.
Instruction 164 Si12-308 System Configuration
Si12-308 Part 6 Service Diagnosis 1. Caution for Diagnosis..........................................................................166 1.1 Troubleshooting with the Operation Lamp ...........................................166 2. Problem Symptoms and Measures .....................................................168 3. Service Check Function ......................................................................169 4. Code Indication on the Remote Controller ..........................................170 4.
Caution for Diagnosis Si12-308 1. Caution for Diagnosis 1.1 Troubleshooting with the Operation Lamp The Operation lamp flashes when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation. 2. When a signal transmission error occurs between the indoor and outdoor units. In either case, conduct the diagnostic procedure described in the following pages.
Si12-308 Caution for Diagnosis Caution: Operation stops suddenly. (Operation lamp blinks.) Cause of above trouble could be "Operation mode butting". Check followings; Are the operation modes all the same for indoor units connected to Multi system outdoor unit? If not set all indoor units to the same operation mode and confirm that the operation lamp is not blinking.
Problem Symptoms and Measures Si12-308 2. Problem Symptoms and Measures Problem Symptom Check Item Details of Measure None of The Units Operates. Check the power supply. Check to make sure that the rated voltage is supplied. Check to make sure that the indoor unit type is compatible with the outdoor unit.
Si12-308 Service Check Function 3. Service Check Function In the ARC433A series, the temperature display sections on the main unit indicate corresponding codes. 1. When the timer cancel button is held down for 5 seconds, a “00” indication flashes on the temperature display section. < Cover in open position > Signal transmitter It sends signals to the indoor unit. TEMPERATURE adjustment button Display • It changes the temperature setting. ON It displays the current settings.
Code Indication on the Remote Controller Si12-308 4. Code Indication on the Remote Controller 4.
Si12-308 Troubleshooting 5. Troubleshooting 5.1 Indoor Units - : Not used for troubleshooting ∗ : Varies depending on the cases. Indication on the remote controller Service Diagnosis Description of The Fault Details of fault (Refer to the indicated page.) 00 Indoor unit in normal condition (Conduct a diagnosis of the outdoor unit.
Troubleshooting 5.2 Si12-308 Outdoor Units 4: ON, 1: OFF, 5: Blinks Green : Flashes when in normal condition Red : OFF in normal condition - : Not used for troubleshooting ∗ : Varies depending on the cases.
Si12-308 5.3 Troubleshooting Indoor Unit PCB Abnormality Remote Controller Display A1 Method of Malfunction Detection Evaluation of zero-cross detection of power supply by indoor unit. Malfunction Decision Conditions When there is no zero-cross detection in approximately 10 continuous seconds. Supposed Causes Faulty indoor unit PCB Faulty connector connection Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Troubleshooting 5.4 Si12-308 Freeze-up Protection Control or High Pressure Control Remote Controller Display A5 Method of Malfunction Detection High pressure control (heat pump model only) Malfunction Decision Conditions High pressure control During heating operations, the temperature detected by the indoor heat exchanger thermistor is used for the high pressure control (stop, outdoor fan stop, etc.
Si12-308 Troubleshooting Troubleshooting Caution Check No.6 Refer to P.210 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the air passage. Is there any short-circuit? YES Provide sufficient air passage. NO Check the intake air filter. Is it very dirty? YES Clean the air filter. NO Check the dust accumulation on the indoor unit heat exchanger. Is it very dirty? YES Clean the heat exchanger. NO Check No.
Troubleshooting 5.5 Si12-308 Fan Motor (DC Motor) or Related Abnormality Remote Controller Display A6 Method of Malfunction Detection The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Decision Conditions When the detected rotation speed is less than 50% of the H tap under maximum fan motor rotation demand. Supposed Causes 176 Operation halt due to short circuit inside the fan motor winding.
Si12-308 Troubleshooting Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check No.01 Refer to P.207 Turn off power supply and rotate fan by hand. Check No.02 Refer to P.207 Does fan rotate smoothly? NO Replace fan motor. YES Turn power ON and operate fan. Does it rotate? Turn off power supply NO and disconnect fan motor connector, then turn power ON. YES Check No.
Troubleshooting 5.6 Si12-308 Thermistor or Related Abnormality (Indoor Unit) Remote Controller Display C4, C9 Method of Malfunction Detection The temperatures detected by the thermistors are used to determine thermistor errors. Malfunction Decision Conditions When the thermistor input is more than 4.96 V or less than 0.04 V during compressor operation∗. ∗ (reference) When above about 212°C (less than 120 ohms) or below about -50°C (more than 1,860 kohms).
Si12-308 5.7 Troubleshooting Shutter Drive Motor / Shutter Limit Switch Abnormality Remote Controller Display C7 Method of Malfunction Detection The shutter open / close performance is detected by the limit switch attached on its structure. In this way, the shutter drive motor and the shutter limit switch are checked for failure. Malfunction Decision Conditions When the shutter is open, the limit switch is closed.
Troubleshooting 5.8 Si12-308 Signal Transmission Error (between Indoor and Outdoor Units) Remote Controller Display U4 Method of Malfunction Detection The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is checked whether it is normal. Malfunction Decision Conditions When the data sent from the outdoor unit cannot be received normally, or when the content of the data is abnormal. Supposed Causes Faulty outdoor unit PCB. Faulty indoor unit PCB.
Si12-308 5.9 Troubleshooting Unspecified Voltage (between Indoor and Outdoor Units) Remote Controller Display UA Method of Malfunction Detection The supply power is detected for its requirements (different from separate type and multi type) by the indoor / outdoor transmission signal. Malfunction Decision Conditions The separate type and multi type are interconnected.
Troubleshooting Si12-308 5.10 Freeze-up Protection Control Remote Controller Display A5 Outdoor Unit LED Display A5 14 21 34 44 Method of Malfunction Detection Indoor unit icing, during cooling operation, is detected by checking the temperatures sensed by the indoor unit heat exchanger thermistor and room temperature thermistor that are located in a shut-down room. Malfunction Decision Conditions In the cooling mode, the following conditions (A) and (B) are kept together for 5 minutes.
Si12-308 Troubleshooting Troubleshooting Caution Check No.4 Refer to P.208 Check No.6 Refer to P.210 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the wiring and piping. Wiring or piping out of spec? YES Activate the wiring error check mode. NO Check No. 4 Check the electronic expansion valve. Motor functioning? NO Replace the defective Ev or coil. YES Check No. 6 Check the outdoor unit heat exchanger thermistor.
Troubleshooting Si12-308 5.11 OL Activation (Compressor Overload) Remote Controller Display E5 Outdoor Unit LED Display A5 1 Method of Malfunction Detection A compressor overload is detected through compressor OL. Malfunction Decision Conditions If the compressor OL is activated twice, the system will be shut down. The error counter will reset itself if this or any other error does not occur during the following 4 21 34 41 60-minute compressor running time (total time).
Si12-308 Troubleshooting 5.12 Compressor Lock Remote Controller Display E6 Outdoor Unit LED Display A5 11 24 34 41 Method of Malfunction Detection A compressor lock is detected by checking the compressor running condition through the position detection circuit. Malfunction Decision Conditions The position detection circuit detects a compressor frequency of below 10 Hz for 20 seconds or a frequency of above 160 Hz.
Troubleshooting Si12-308 5.13 DC Fan Lock Remote Controller Display E7 Outdoor Unit LED Display A5 14 24 34 44 Method of Malfunction Detection A fan motor line error is detected by checking the high-voltage fan motor rpm being detected by the Hall IC. Malfunction Decision Conditions The fan does not start in 30 seconds even when the fan motor is running. The system will be shut down if the error occurs 16 times.
Si12-308 Troubleshooting 5.14 Input Over Current Detection Remote Controller Display E8 Outdoor Unit LED Display A5 11 24 31 44 Method of Malfunction Detection An input over-current is detected by checking the input current value being detected by CT with the compressor running. Malfunction Decision Conditions The following CT input with the compressor running continues for 2.5 seconds.
Troubleshooting Si12-308 Troubleshooting Caution Check No.7 Refer to P.211 Check No.8 Refer to P.212 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. ∗ An input over-current may result from wrong internal wiring. If the wires have been disconnected and reconnected for part replacement, for example, and the system is interrupted by an input over-current, take the following procedure. Get restarted and measure the input current.
Si12-308 Troubleshooting 5.15 Four Way Valve Abnormality Remote Controller Display EA Outdoor Unit LED Display A5 14 21 31 41 Method of Malfunction Detection The liquid pipe thermistor, the outdoor temperature thermistor and the outdoor unit heat exchanger thermistor are checked to see if they function within their normal ranges in the operating mode.
Troubleshooting Si12-308 Troubleshooting Caution Check No.5 Refer to P.209 Check No.6 Refer to P.210 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Four-way valve coil disconnected (loose)? YES NO YES Harness out of connector? Check No.11 Refer to P.213 Correct. Reconnect. NO Check the continuity of the fourway valve coil and harness. Disconnect the harness from the connector.
Si12-308 Troubleshooting 5.16 Discharge Pipe Temperature Control Remote Controller Display F3 Outdoor Unit LED Display A5 14 21 34 41 Method of Malfunction Detection The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the temperature being detected by the discharge pipe thermistor. Malfunction Decision Conditions If a stop takes place 6 times straight due to abnormal discharge pipe temperature, the system will be shut down.
Troubleshooting Si12-308 5.17 Position Sensor Abnormality Remote Controller Display H6 Outdoor Unit LED Display A5 14 24 31 41 Method of Malfunction Detection A compressor startup failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Decision Conditions The compressor fails to start in about 15 seconds after the compressor run command signal Supposed Causes is sent.
Si12-308 Troubleshooting 5.18 CT or Related Abnormality Remote Controller Display H8 Outdoor Unit LED Display A5 14 24 31 41 Method of Malfunction Detection A CT or related error is detected by checking the compressor running frequency and CTdetected input current. Malfunction Decision Conditions The compressor running frequency is below 55 Hz and the CT input is below 0.1 V. (The input current is also below 1.25 A.) If this error repeats 4 times, the system will be shut down.
Troubleshooting Si12-308 Troubleshooting Caution Check No.12 Refer to P.214 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn off the power and turn it on again. Get the system started. ∗ Running current as shown at right with relay cable 1 or 2? YES Current (guideline) NO Check No. 12 Check the capacitor voltage. Rising with increasing frequency 2 sec DC380±30V? Replace the outdoor unit PCB.
Si12-308 Troubleshooting 5.19 Thermistor or Related Abnormality (Outdoor Unit) Remote Controller Display P4, J3, J6, J8, J9, H9 Outdoor Unit LED Display A5 14 24 31 41 Method of Malfunction Detection This type of error is detected by checking the thermistor input voltage to the microcomputer. [A thermistor error is detected by checking the temperature being detected by each thermistor.] Malfunction Decision Conditions When the thermistor input is above 4.96 V or below 0.
Troubleshooting Si12-308 Troubleshooting Caution Check No.6 Refer to P.210 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn on the power again. Error displayed again on remote controller? NO Reconnect. YES Connector or thermistor disconnected? YES Reconnect. NO Check No. 6 Check the thermistor resistance value.
Si12-308 Troubleshooting 5.20 Electrical Box Temperature Rise Remote Controller Display L3 Outdoor Unit LED Display A5 14 24 31 44 Method of Malfunction Detection An electrical box temperature rise is detected by checking the radiation fin thermistor with the compressor off. Malfunction Decision Conditions With the compressor off, the radiation fin temperature is above 80°C (above 75°C in the case of 8.0 · 9.0kW class). (Reset is made when the temperature drops below 70°C.
Troubleshooting Si12-308 Troubleshooting Caution Check No.6 Refer to P.210 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn off the power and turn it on again. Check No.7 Refer to P.211 Error again or outdoor unit fan activated? Check No.9 Refer to P.212 WARNING To cool down the electricals, the outdoor unit fan gets started when the radiation fin temperature rises above 78˚C and stops itself when it drops below 70˚C. YES NO Check No.
Si12-308 Troubleshooting 5.21 Radiation Fin Temperature Rise Remote Controller Display L4 Outdoor Unit LED Display A5 11 21 31 44 Method of Malfunction Detection A radiation fin temperature rise is detected by checking the radiation fin temperature being detected by the fin thermistor with the compressor on. Malfunction Decision Conditions If the radiation fin temperature with the compressor on is above 90°C for 5.2~7.5 kW-or-smaller class systems or above 85°C for 8.0 · 9.
Troubleshooting Si12-308 Troubleshooting Caution Check No.6 Refer to P.210 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn off the power and turn it on again to get the system started. Check No.7 Refer to P.211 Error displayed again? Check No.9 Refer to P.212 YES NO Check No. 6 Check the thermistor resistance value. l Fin thermistor Check the radiation fin temperature.
Si12-308 Troubleshooting 5.22 Output Over Current Detection Remote Controller Display L5 Outdoor Unit LED Display A5 11 21 34 41 Method of Malfunction Detection An output over-current is detected by checking the current that flows in the inverter DC section. Malfunction Decision Conditions A position signal error occurs while the compressor is running. A speed error occurs while the compressor is running.
Troubleshooting Si12-308 Troubleshooting Check No.7 Refer to P.211 Check No.8 Refer to P.212 Check No.13 Refer to P.214 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. ∗ An output over-current may result from wrong internal wiring. If the wires have been disconnected and reconnected for part replacement, for example, and the system is interrupted by an output over-current, take the following procedure.
Si12-308 Troubleshooting 5.23 Insufficient Gas Remote Controller Display U0 Outdoor Unit LED Display A5 11 21 34 44 Method of Malfunction Detection Gas shortage detection I : A gas shortage is detected by checking the CT-detected input current value and the compressor running frequency.
Troubleshooting Si12-308 Troubleshooting Check No.4 Refer to P.208 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Any thermistor disconnected? Check No.6 Refer to P.210 NO YES Reconnect in position. * Discharge pipe thermistor * Indoor / outdoor unit heat exchanger thermistor * Room temperature thermistor * Outdoor air thermistor YES Open the stop valve. Stop valve closed? NO Check for gas leakage.
Si12-308 Troubleshooting 5.24 Low-voltage Detection Remote Controller Display U2 Outdoor Unit LED Display A5 14 21 31 44 Method of Malfunction Detection An abnormal voltage rise or drop is detected by checking the detection circuit or DC voltage detection circuit.
Troubleshooting Si12-308 5.25 Anti-icing Function in Other Rooms / Unspecified Voltage (between Indoor and Outdoor Units) Remote Controller Display UA, UH Outdoor Unit LED Display A5 11 21 31 41 Method of Malfunction Detection A wrong connection is detected by checking the combination of indoor and outdoor units on the microcomputer.
Si12-308 Check 6. Check 6.1 How to Check 6.1.1 Fan Motor Connector Output Check Check No.01 1. 2. 3. 4. 5. Check connector connection. Check motor power supply voltage output (pins 4-7 and 4-8). Check motor control voltage (pins 4-3). Check rotation command voltage output (pins 4-2). Check rotation pulse input (pins 4-1). Upper fan connector 7 6 5 4 3 2 1 Lower fan connector 8 Motor power supply voltage 7 Unused 6 Unused 5 Unused 4 P.
Check Si12-308 6.1.3 Electronic Expansion Valve Check Check No.4 Conduct the followings to check the electronic expansion valve (EV). 1. Check to see if the EV connector is correctly inserted in the PCB. Compare the EV unit and the connector number. 2. Turn the power off and back on again, and check to see if all the EVs generate latching sound. 3. If any of the EVs does not generate latching noise in the above step 2, disconnect that connector and check the conductivity using a tester.
Si12-308 Check 6.1.4 Four Way Valve Performance Check Check No.5 Turn off the power and turn it on again. Start the heating-mode run. S80 voltage at DC 180-220 V with compressor on? (Fig. 1) ∗ Four way valve coil Cooling / dry : No continuity Heating : Continuity NO Replace the outdoor unit PCB. YES Disconnect the four way valve coil from the connector and check the continuity. Four way valve coil resistance at 1500 ohms? NO YES Replace the four way valve coil. Replace the four way valve.
Check Si12-308 6.1.5 Thermistor Resistance Check Check No.6 Remove the connectors of the thermistors on the PCB, and measure the resistance of each thermistor using tester. The relationship between normal temperature and resistance is shown in the graph and the table below. Thermistor R25°C=20kΩ B=3950 210 Temperature (°C) -20 211.0 (kΩ) -15 -10 150 116.5 -5 0 88 67.2 5 10 51.9 40 15 20 31.8 25 25 30 20 16 35 40 13 10.6 45 50 8.7 7.
Si12-308 Check 6.1.6 Installation Condition Check Check No.7 Installation condition check Check the allowable dimensions of the air suction and discharge area. Normal Does the discharged air from other outdoor unit cause an increase of the suction air temperature? Abnormal YES Change the position of the air discharge grille or the installation location. Change the position of the air discharge grille or the installation location.
Check Si12-308 6.1.7 Discharge Pressure Check Check No.8 Discharge pressure check NO High Replace compessor. YES Is the stop valve open? NO Open the stop valve. YES Is the connection pipe deformed? NO Replace the pipe installed at the site. YES At the heat exchanger and air filter dirty? NO Clean. YES Replace the compressor. (R1443) 6.1.8 Outdoor Unit Fan System Check (With DC Motor) Check No.9 Check the outdoor unit fan system.
Si12-308 Check 6.1.9 Power Supply Waveforms Check Check No.10 Measure the power supply waveform between pins 1 and 3 on the terminal board, and check the waveform disturbance. Check to see if the power supply waveform is a sine wave (Fig.1). Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2) [Fig.1] [Fig.2] 6.1.10 Inverter Units Refrigerant System Check Check No.
Check Si12-308 6.1.11 Capacitor Voltage Check Check No.12 Before this checking, be sure to check the main circuit for short-circuit. Checking the capacitor voltage z With the circuit breaker still on, measure the voltage according to the drawing of the model in question. Be careful never to touch any live parts. Use the tester in the DC range.
Si12-308 Check 6.1.13 Main Circuit Electrolytic Capacitor Check Check No.14 Checking the main circuit electrolytic capacitor z Never touch any live parts for at least 10 minutes after turning off the circuit breaker. z If unavoidably necessary to touch a live part, make sure there is no DC voltage using the tester. z Check the continuity with the tester. Reverse the pins and make sure there is continuity. 6.1.14 Turning Speed Pulse Input on the Outdoor Unit PCB Check Check No.
Check 216 Si12-308 Service Diagnosis
Si12-308 Part 7 Removal Procedure 1. Outdoor Unit (80 / 90 Class) ...............................................................218 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 Removal of Outer Panels .....................................................................218 Removal of Propeller Fans...................................................................221 Removal of Electrical Box ....................................................................222 Removal of PCB...............................
Outdoor Unit (80 / 90 Class) Si12-308 1. Outdoor Unit (80 / 90 Class) 1.1 Removal of Outer Panels Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 Points External appearance. Remove the piping in the backward direction. 2 218 Remove 11 screws of the top panel.
Si12-308 Outdoor Unit (80 / 90 Class) Procedure Step 3 Unscrew 3 screws of the right panel, slide it downwards and release the tabs to remove. 4 The figure shows the view of piping connections. 5 Unscrew 1 screw of the front right panel, slide it downwards and release the tabs to remove.
Outdoor Unit (80 / 90 Class) Procedure Step 6 Unscrew 3 screws of the front panel to remove. 7 Remove 4 screws of the discharge outlet grill. 8 Slide the discharge outlet grill upwards and release 6 tabs to remove.
Si12-308 1.2 Outdoor Unit (80 / 90 Class) Removal of Propeller Fans Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the discharge 1 2 outlet grill To take off propeller fan, remove the washer-fitted nut M8. Remove the propeller fan. For reassembling, align mark of propeller fan with D-cut section of motor shaft. Mount the propeller fan while positioning top.
Outdoor Unit (80 / 90 Class) 1.3 Si12-308 Removal of Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Remove the outer panels such as top and front panels. 1 The figure shows the right side view. Points Match the colors of the tie wires to A, B, C and D ports as follows. (1) - Black Power (2) - White Power (3) - Red Transmission Wires are fixed to the terminal board with screws. 1.
Si12-308 Outdoor Unit (80 / 90 Class) Procedure Step 3 Remove the earth wire. 4 Remove 1 screw of the terminal board. 5 Release the tab on the top right of the terminal board. 6 Pull out the terminal board and open it. Removal Procedure Points Glass tube fuse and varistor cannot be replaced individually because leadfree soldering is provided.
Outdoor Unit (80 / 90 Class) Si12-308 Procedure Step Points 2. Remove each wire harness 1 Disconnect 4 connectors of the electronic expansion valve lead wires. Connector S20 (White) S21 (Red) S22 (Blue) S23 (Yellow) Electronic expansion valve No. Harness length EVA EVB 630 730 EVC EVD 825 940 When reconnecting, make sure to match the wire to the correct connector. 2 Remove the four way valve connector S80. 3 Remove the connector S93 for liquid pipe thermistor.
Si12-308 Outdoor Unit (80 / 90 Class) Procedure Step 4 Remove the connector S92 for gas pipe thermistor. 5 Remove the connector S90 for thermistor. Outdoor air thermistor (Blue) Discharge pipe thermistor (Black) Heat exchanger thermistor (Gray) 6 Remove the overload relay connector S40. 7 Remove the reactor lead wire.
Outdoor Unit (80 / 90 Class) Procedure Step 8 Remove the relay connector for compressor. 9 Remove the electrical box cover. 10 Disconnect the fan motor connector. 11 Remove the discharge pipe thermistor.
Si12-308 Procedure Step 12 Outdoor Unit (80 / 90 Class) Take off the thermistor presser spring, and remove the thermistor. Points Place the thermistor so that its end comes up to the end of the presser spring. Be careful not to lose the presser spring for the discharge pipe thermistor. 3. Removing the electrical box 1 Remove 2 screws of the electrical box. 2 Turn the electrical box up side down halfway, and disconnect the thermistor lead wire from the hook.
Outdoor Unit (80 / 90 Class) Procedure Step 3 Remove the outdoor air thermistor lead wire from the groove. 4 Remove each wire harness, and dismount the electrical box by lifting it.
Si12-308 1.4 Outdoor Unit (80 / 90 Class) Removal of PCB Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the controller PCB 1 Release the tab of the electrical box, and open the terminal board. 2 Disconnect each connector of the terminal board.
Outdoor Unit (80 / 90 Class) Procedure Step 4 Lift the PCB at the terminal board side. 5 Disconnect each wire harness connector linked to the inverter PCB.
Si12-308 Procedure Step 6 Outdoor Unit (80 / 90 Class) The figure shows the controller PCB.
Outdoor Unit (80 / 90 Class) 1.5 Si12-308 Removal of Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the outer panels. 1 Remove the fan motor lead wire connector S70. 2 Remove the propeller fans. For reassembling, align mark of propeller fan with D-cut section of motor shaft. Mount the fan motor so as to position Q mark on the top. 3 232 Remove 2 screws of the fan motor mount.
Si12-308 Outdoor Unit (80 / 90 Class) Procedure Step 4 Remove 4 screws of the fan motor. 5 Cut the wrapper fixing the lead wire. Points When reassembling, fix the lead wire to avoid contact with the propeller fan. 6 Remove the fan motor.
Outdoor Unit (80 / 90 Class) 1.6 Removal of Electronic Expansion Valve and Thermistor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step 1 Si12-308 Procedure Remove each wire harness. Points Place the thermistor so that its end comes up to the end of the presser spring. Be careful not to lose the presser spring for the discharge pipe thermistor. 2 Take off the putty, and remove each thermistor.
Si12-308 1.7 Outdoor Unit (80 / 90 Class) Removal of Sound Insulation and Reactor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1 Release the clip fixing the compressor lead wire. 2 Remove 2 screws of the partition board, and move the board leftward. The partition board is not Remove the noise insulation (outer).
Outdoor Unit (80 / 90 Class) Procedure Step 4 Remove the noise insulation (top). 5 Remove the noise insulation (inner). 6 Remove 1 screw of the reactor. 236 Si12-308 Points Carefully remove the noise insulation, which is easily torn in the piping section.
Si12-308 1.8 Outdoor Unit (80 / 90 Class) Removal of Shunt Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step 1 Procedure Remove 6 screws of the tie wire presser plate. 2 Remove 4 screws of the right side panel. 3 Remove the putty. Points Fasten the rubber packing with double-faced adhesive tape when mounting.
Outdoor Unit (80 / 90 Class) 1.9 Si12-308 Removal of Solenoid Valve and Four Way Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the outer panels. 1. Removing the solenoid valve 1 Remove 1 screw of the solenoid valve coil. Before taking this procedure, make sure there is no refrigerant gas left in the refrigerant pipes.
Si12-308 Procedure Step Before taking this procedure, make sure there is no refrigerant gas left in the refrigerant pipes. 2 Place welding protective sheet or iron plate around the four way valve to prevent the flames of a gas welding rod from affecting the valve. 3 4 5 Outdoor Unit (80 / 90 Class) Heat the 4 brazed points of the four way valve. Disconnect the point (a) first. Disconnect the points (b) and (c). Disconnect the point (d). Removal Procedure Points Reassembling precautions 1.
Outdoor Unit (80 / 90 Class) Si12-308 1.10 Removal of Compressor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure 1 Remove the terminal cover. 2 Remove the overload relay. Points Be careful to avoid burning the compressor terminals or the nameplate. 3 Disconnect the flag shape terminal. 4 There is one nut fixing the compressor. Remove the nut with a spanner.
Si12-308 Outdoor Unit (80 / 90 Class) Procedure Step Points Make sure there is no refrigerant gas left inside the refrigerant pipes before starting the job. When heating up the brazed parts, make sure to carry out the N2 replacement. 5 Remove the 2 sheets of putty. Warning The compressor's refrigerating machine oil may catch fire. Have wet cloth at hand for quickly putting out the fire. Warning If refrigerant gas leaks during the job, ventilate the room.
Outdoor Unit (52 / 58 / 68 / 75 Class) Si12-308 2. Outdoor Unit (52 / 58 / 68 / 75 Class) 2.1 Removal of Outer Panels Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 External appearance. 2 Remove 4 screws of the top panel and 6 screws of the front panel. Remove 4 screws of the discharge outlet grill. 3 4 242 Points Remove 2 screws of the piping cover.
Si12-308 2.2 Outdoor Unit (52 / 58 / 68 / 75 Class) Removal of Electrical BOX Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the tie wires 1 The figure shows the tie pipe connections. Remove the piping in the backward direction. 2 Remove the terminal board fitting screw. Match the colours of the tie wires to A, B, C and D ports as follows.
Outdoor Unit (52 / 58 / 68 / 75 Class) Procedure Step 3 Si12-308 Pull out the terminal board to open. 2. Remove each wire harness 1 Disconnect 4 connectors of the electronic expansion valve lead wires. Points Glass tube fuse and varistor cannot be replaced individually because leadfree soldering is provided. Connector Electronic expansion valve No.
Si12-308 Outdoor Unit (52 / 58 / 68 / 75 Class) Procedure Step 4 Disconnect the compressor relay connector. 5 Remove the reactor lead wire. Points 3. Removing the wiring fixture 1 Remove 6 screws of the wiring fixture. 4. Removing the electrical box. 1 Remove 1 screw of the electrical box.
Outdoor Unit (52 / 58 / 68 / 75 Class) Procedure Step 2 Remove 1 screw of the electrical box. 3 Remove the drip-proof cover. 4 Disconnect the fan motor lead wire. 5 Lift up the electrical box and dismount it.
Si12-308 2.3 Outdoor Unit (52 / 58 / 68 / 75 Class) Removal of PCB Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the controller PCB 1 Remove 1 screw of the PCB, and release two tabs. 2 Release the tabs of the terminal board, and open the terminal board. 3 Disconnect each connector on the back of the terminal board. 4 Disconnect the service monitor PCB connector.
Outdoor Unit (52 / 58 / 68 / 75 Class) Procedure Step 5 Lift up the control PCB. 6 Disconnect each wire harness connector linked to the control PCB.
Si12-308 Procedure Step 7 Outdoor Unit (52 / 58 / 68 / 75 Class) The figure shows the control PCB. Points Glass tube fuse 3A 2. Removing the service monitor PCB 1 The figure shows the service monitor PCB. 3. Removing the inverter PCB. 1 Remove the 7 screws of the inverter PCB.
Outdoor Unit (52 / 58 / 68 / 75 Class) 2.4 Si12-308 Removal of Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Remove the fan motor lead wire connector. 1 Remove the propeller fan by removing the washer-fitted nut. Points For reassembling, align mark of propeller fan with D-cut section of motor shaft. Mount the propeller fan while positioning Q mark to the top. 2 Remove the fan motor.
Si12-308 2.5 Outdoor Unit (52 / 58 / 68 / 75 Class) Removal of Sound Insulation Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure 1 Remove 5 screws of the right side panel. 2 Remove 2 screws of the partition board, and remove the board. 3 Remove the noise insulation (top, outer and inner).
Outdoor Unit (52 / 58 / 68 / 75 Class) 2.6 Si12-308 Removal of Four Way Valve Coil, Solenoid Valve Coil, Electronic Expansion Valve Coil and Thermistor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 Remove 1 screw of the four way valve coil. 2 Remove one screw of the solenoid valve coil. 3 Remove the electronic expansion valve coil for each room.
Si12-308 Procedure Step 5 6 Outdoor Unit (52 / 58 / 68 / 75 Class) Take off the putty, and remove each thermistor. Remove the wire harness. Points Place the thermistor so that its end comes up to the end of the presser spring. Be careful not to lose the presser spring for the discharge pipe thermistor.
Outdoor Unit (52 / 58 / 68 / 75 Class) 2.7 Si12-308 Removal of Four Way Valve, Solenoid Valve and Shunt Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure 1 Remove 1 screw of the four way valve coil. 2 Remove 1 screw of the solenoid valve coil. Points Reassembling precautions 1. Use non-oxidizing brazing method. If nitrogen gas is not available, braze the parts speedily. 2.
Si12-308 2.8 Outdoor Unit (52 / 58 / 68 / 75 Class) Removal of Solenoid Valve and Shunt Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Before taking this procedure, make sure there is no refrigerant gas left in the refrigerant pipes. 1 Disconnect the 2 brazed points (a) and (b) in this order. 2 Remove the putty of the shunt. 3 Disconnect the 5 brazed points of the shunt.
Outdoor Unit (52 / 58 / 68 / 75 Class) 2.9 Removal of Compressor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure 1 Remove the terminal cover. 2 Disconnect the compressor lead wire. Remove the 2 sheets of putty. 3 Si12-308 Points As precaution, keep the contents in memorandum. Be careful to avoid burning the compressor terminals or the nameplate. There is one nut fixing the compressor.
Si12-308 Part 8 Others 1. Others .................................................................................................258 1.1 Test Run from the Remote Controller ..................................................258 1.2 Jumper Settings ...................................................................................
Others Si12-308 1. Others 1.1 Test Run from the Remote Controller Trial Operation and Testing 1. Measure the supply voltage and make sure that it falls in the specified range. 2. Trial operation should be carried out in either cooling or heating mode. For Heat pump For Cooling operation in case of low ambient temperature In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable temperature.
Si12-308 1.2 Others Jumper Settings 1.2.1 When Two Units are Installed in One Room How to set the different addresses. When two indoor units are installed in one room, the two wireless remote controllers can be set for different addresses. PCB in the indoor unit Remove the front panel. Remove the sensor parts cover (2-screws), then remove the electric parts box (1-screw). Slide the metallic cover to remove it. (4-claws on the electric parts box.) Cut the jumper JA on PCB.
Others Si12-308 1.2.3 Adjusting the Angle of the Intelligent Eye Sensor Wall Mounted Type 25 / 35 Class Only Once installation of the indoor unit is complete, adjust the angle of the Intelligent eye sensor to ensure the detection area properly covers the room. (Adjustable angle : 15° to right and left of center) Gently push and slide the sensor to adjust the angle. Aim so that the sensor is pointing to the center of the room, or to the part of the room that is most frequently used.
Si12-308 Part 9 Appendix 1. Piping Diagrams..................................................................................262 1.1 Indoor Units ..........................................................................................262 1.2 Outdoor Units .......................................................................................268 2. Wiring Diagrams..................................................................................275 2.1 Indoor Units ........................................
Piping Diagrams Si12-308 1. Piping Diagrams 1.1 Indoor Units 1.1.1 Wall Mounted Type FTKE25 / 35BVM, FTK(X)E25 / 35BVMA, FTK(X)E25 / 35BVMT, FTXE25 / 35BVMC INDOOR UNIT HEAT EXCHANGER 7.0CuT 7.9CuT 6.4CuT THERMISTOR ON HEAT EXCH. 6.4CuT 6.4CuT CROSS FLOW FAN FIELD PIPING (6.4CuT) M FAN MOTOR FIELD PIPING ( 9.5CuT FTXE25-- 9.5 FTXE35-- 12.7 CuT) REFRIGERANT FLOW COOLING HEATING C:4D032969A FTK(X)S25 / 35BVMB INDOOR UNIT HEAT EXCHANGER 7.0CuT 7.9CuT 6.4CuT THERMISTOR ON HEAT EXCH. 6.
Si12-308 Piping Diagrams FTKD50BVM, FTK(X)D50BVMA, FTK(X)D50BVMT, FTXD50BVMC, FTK(X)S50 / 60BVMB INDOOR UNIT (7.9CuT) HEAT EXCHANGER THERMISTOR ON HEAT EXCH. CROSS FLOW FAN FIELD PIPING (6.4CuT) M FAN MOTOR FIELD PIPING (12.7CuT) (12.7CuT) REFRIGERANT FLOW COOLING HEATING 4D040081A FTKD60BVM, FTK(X)D60BVMA, FTK(X)D60BVMT, FTXD60BVMC, FTK(X)S71BVMB INDOOR UNIT (7.9CuT) HEAT EXCHANGER THERMISTOR ON HEAT EXCH. CROSS FLOW FAN FIELD PIPING (6.4CuT) M FAN MOTOR FIELD PIPING (15.9CuT) (12.
Piping Diagrams Si12-308 FTKD71BVM, FTK(X)D71BVMA, FTK(X)D71BVMT, FTXD71BVMC INDOOR UNIT (7.9CuT) HEAT EXCHANGER THERMISTOR ON HEAT EXCH. CROSS FLOW FAN FIELD PIPING (9.5CuT) M REFRIGERANT FLOW FAN MOTOR FIELD PIPING (15.9CuT) COOLING HEATING (12.7CuT) 4D040083A 1.1.2 Duct Connected Type CDK25 / 35 / 50 / 60AVM, CDK(X)25 / 35 / 50 / 60AVMA, CDX25 / 35BVMC, CDX50 / 60AVMC INDOOR UNIT (6.4CuT) HEAT EXCHANGER FIELD PIPING (6.4CuT) THERMISTOR ON HEAT EXCH.
Si12-308 Piping Diagrams CDK(X)S25 / 35 / 50 / 60BVMB INDOOR UNIT (6.4CuT) HEAT EXCHANGER THERMISTOR ON HEAT EXCH. FIELD PIPING (6.4CuT) SIROCCO FAN CDKS25BVMB CDXS35BVMB M ( 9.5 9.5 12.7 12.7 CDKS35BVMB FAN MOTOR FIELD PIPING ( CuT) CDXS25BVMB CDXS50BVMB CDKS50BVMB CuT) CDXS60BVMB CDKS60BVMB REFRIGERANT FLOW COOLING HEATING C : 4D033699A 1.1.3 Floor Standing Type FVK(X)S25 / 35BVMB INDOOR UNIT HEAT EXCHANGER 7.9CuT M CROSS FLOW FAN FAN MOTOR THERMISTOR ON HEAT EXCH.
Piping Diagrams Si12-308 FVK(X)S50BVMB INDOOR UNIT 7.0CuT 4.8CuT MUFFLER HEAT EXCHANGER 4.8CuT 9.5CuT M FAN MOTOR CROSS FLOW FAN THERMISTOR ON HEAT EXCH. MUFFLER M FIELD PIPING 7.0CuT 7.0CuT FAN MOTOR CROSS FLOW FAN 7.0CuT (6.4CuT) FIELD PIPING 9.5CuT (12.7CuT) REFRIGERANT FLOW COOLING HEATING 4D020911B 1.1.4 Floor / Ceiling Suspended Dual Type FLK(X)S25 / 35 / 50 / 60BVMB INDOOR UNIT CuT) ( HEAT EXCHANGER FIELD PIPING (6.4CuT) THERMISTOR ON HEAT EXCH.
Si12-308 Piping Diagrams FLK(X)25 / 35 / 50 / 60AVMA INDOOR UNIT ( CuT) HEAT EXCHANGER FIELD PIPING (6.4CuT) THERMISTOR ON HEAT EXCH. SIROCCO FAN M FAN MOTOR FIELD PIPING ( ( CuT) CuT) FLX25FLK25- 9.5 9.5 6.4 FLX35FLK35- 12.7 9.5 6.4 FLX50FLK50- 12.7 12.7 9.5 FLX60FLK60- 15.9 12.7 9.
Piping Diagrams 1.2 Si12-308 Outdoor Units 2MKD58BVM OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE THERMISTOR(DOA) 9.5CuT HEADER MOTOR OPERATED VALVE EVA 9.5CuT 6.4CuT FILTER FILTER HEAT EXCHANGER THERMISTOR(DE) DISTRIBUTOR DC FAN MOTOR EVB LIQUID LINE STOP VALVE M FIELD PIPING LIQUID MOTOR OPERATED VALVE 6.4CuT CAPILLARY TUBE ROOM A (6.4 CuT) FILTER ROOM B (6.4 CuT) PROPELLER FAN 7.9CuT HEADER 12.7CuT 12.7CuT DISCHARGE PIPE THERMISTOR(DO) 12.7CuT ROOM A (12.
Si12-308 Piping Diagrams 3MKD75BVM, 3MKD75BVMA, 3MKD75BVMT OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPARETURE THERMISTOR(DOA) MOTOR OPERATED VALVE HEADER 9.5CuT 9.5CuT 6.4CuT EVA FILTER ROOM A (6.4 CuT) FILTER ROOM B (9.5 CuT) FILTER ROOM C (9.5 CuT) MOTOR OPERATED VALVE 6.4CuT EVB FILTER HEAT EXCHANGER THERMISTOR(DE) DISTRIBUTOR MOTOR OPERATED VALVE CAPILLARY TUBE DC FAN MOTOR FIELD PIPING LIQUID LIQUID LINE STOP VALVE M 6.4CuT EVC PROPELLER FAN 7.9CuT HEADER 12.7CuT 12.
Piping Diagrams Si12-308 3MXD68BVMC, 3MXD68BVMA, 3MXD68BVMT OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE THERMISTOR(DOA) HEADER HEADER 6.4CuT 9.5CuT MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR(DLA) EVA 6.4CuT FILTER MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR(DLB) EVB 6.4CuT FILTER HEAT EXCHANGER THERMISTOR(DE) DC FAN MOTOR SV DISTRIBUTOR CAPILLARY TUBE 6.4CuT M DEFROST SOLENOID VALVE FILTER LIQUID LINE STOP VALVE MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR(DLC) EVC 6.
Si12-308 Piping Diagrams 3MKS50BVMB OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE THERMISTOR(DOA) 9.5CuT HEADER MOTOR OPERATED VALVE LIQUID PIPE EVA THERMISTOR(DLA) 6.4CuT 9.5CuT FILTER MOTOR OPERATED VALVE FVB THERMISTOR(DLB) 6.4CuT FILTER HEAT EXCHANGER THERMISTOR(DE) DISTRIBUTOR CAPILLARY TUBE DC FAN MOTOR FILTER MOTOR OPERATED VALVE EVC THERMISTOR(DLC) 6.4CuT FILTER ROOM A (6.4CuT) ROOM B (6.4CuT) FIELD PIPING LIQUID ROOM C (6.4CuT) LIQUID LINE STOP VALVE M PROPELLER FAN 7.
Piping Diagrams Si12-308 4MKS75BVMB OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPARATURE THERMISTOR(DOA) HEADER 9.5CuT MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR(DLA) EVA 6.4CuT 9.5CuT MOTOR OPERATED VALVE LIQUID PIPE FILTER THERMISTOR(DLB) EVB 6.4CuT MOTOR OPERATED VALVE LIQUID PIPE FILTER THERMISTOR(DLC) EVC 6.4CuT FILTER HEAT EXCHANGER THERMISTOR(DE) DISTRIBUTOR CAPILLARY TUBE LIQUID LINE STOP VALVE DC FAN MOTOR M MOTOR OPERATED VALVE LIQUID PIPE FILTER THERMISTOR(DLD) EVD 6.
Si12-308 Piping Diagrams 3MXS52BVMB OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPARATURE THERMISTOR(DOA) HEADER HEADER 6.4CuT 9.5CuT MOTOR OPERATED VALVE LIQUID PIPE FILTER THERMISTOR(DLB) EVB 6.4CuT FILTER HEAT EXCHANGER THERMISTOR(DE) DISTRIBUTOR SV CAPILLARY TUBE 6.4CuT DC FAN MOTOR M DEFROST SOLENOID VALVE MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR(DLA) EVA 6.4CuT MOTOR OPERATED VALVE LIQUID PIPE FILTER THERMISTOR(DLC) EVC 6.4CuT LIQUID LINE STOP VALVE FILTER ROOM A (6.4 CuT) ROOM B (6.
Piping Diagrams Si12-308 4MKD90BVM, 4MKD90BVMA, 4MKD90BVMT OUTDOOR UNIT HEAT EXCHANGER MOTOR OPERATED VALVE OUTDOOR TEMPERATURE THERMISTOR(DOA) HEADER EVA MOTOR OPERATED VALVE 7.9CuT 7.9CuT 7.9CuT 7.9CuT HEAT EXCHANGER THERMISTOR(DE) DISTRIBUTOR 9.5CuT 7.9CuT 7.9CuT LIQUID LINE STOP VALVE 7.9CuT M MOTOR OPERATED VALVE 9.5CuT ROOM A (6.4 CuT) FILTER ROOM B (6.4 CuT) FILTER ROOM C (9.5 CuT) FILTER ROOM D (9.
Si12-308 Wiring Diagrams 2. Wiring Diagrams 2.1 Indoor Units 2.1.1 Wall Mounted Type FTKE25 / 35BVM, FTK(X)E25 / 35BVMA, FTK(X)E25 / 35BVMT, FTK(X)S25 / 35BVMB PCB3 S36 S35 PCB1 H1 Fu 3.15A INTELLIGENTEYE SENSOR H2 S27 PCB2 FOR ( TERMINAL CENTRALIZED CONTROL ) S26 C70 TRANSMISSION CIRCUIT LED1 LED2 LED3 S21 H1P H2P H3P SIGNAL RECEIVER t˚ t˚ R2T M NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN.
Wiring Diagrams Si12-308 FTKD50 / 60 / 71BVM, FTK(X)D50 / 60 / 71BVMA, FTK(X)D50 / 60 / 71BVMT, FTK(X)S60 / 71BVMB FIELD WIRING. PCB3 S27 S26 PCB1 H1 ~ ~ RECTIFIER 1 Fu 3.15A H2 t˚ R1T S38 H3 TRANSMISSION X1M 2 BLK 1 3 WHT 2 RED GRN/ YLW 3 OUTDOOR CAUTION NOTE THAT OPERATION WILL CIRCUIT RESTART AUTOMATICALLY IF FG THE MAIN POWER SUPPLY IS PCB4 S37 7 S1 S21 TURNED OFF AND THEN BACK RED ON AGAIN.
Si12-308 Wiring Diagrams FTXD50BVMC FTXD60 / 71BVMC Appendix 277
Wiring Diagrams Si12-308 2.1.2 Duct Connected Type CDK25 / 35 / 50 / 60AVM, CDK(X) 25 / 35 / 50 / 60AVMA, CDK(X)S25 / 35 / 50 / 60BVMB H1 PCB1 PCB2 LED LED LED S1 Fu 3.15A S26 H2 H1P H2P H3P FOR ( TERMINAL CENTRALIZED CONTROL ) C70 TRANSMISSION CIRCUIT S21 S1W BLK WHT RED GRN / YLW H3 1 2 3 X1M 1 2 3 outdoor FIELD WIRING. CAUTION S1 SIGNAL RECEIVER NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN.
Si12-308 Wiring Diagrams 2.1.3 Floor / Ceiling Suspended Dual Type FLK(X)25 / 35 / 50 / 60AVMA, FLK(X)S25 / 35 / 50 / 60BVMB PCB3 S25 PCB1 S24 S37 PCB2 S36 LED LED LED H1 Fu 3.15A H1P H2P H3P H2 PCB4 C70 S1W TRANSMISSION CIRCUIT HA SIGNAL RECEIVER BLK WHT RED GRN/ YLW S26 S27 S7 S21 S31 S32 t˚ t˚ R1T R2T H4 H5 H3 X1M 1 2 3 1 2 3 → outdoor FIELD WIRING.
Wiring Diagrams 2.2 Si12-308 Outdoor Units 2MKD58BVM 1 S52 H5P H4P H3P H2P H1P S2W S5W Z1C~Z3C : FERRITE CORE X1M~X3M : TERMINAL STRIP Y1E~Y2E : ELECTRONIC EXPANSION VALVE COIL V2~V5 : VARISTOR FU1, FU2.
Si12-308 Wiring Diagrams 3MKD58 / 75BVM, 3MKD75BVMA, 3MKD75BVMT 7 WHT 7 S51 1 12 1 S101 5 BLU BLU BLU BLU BLU BLU BLU BLU BLU BLU BLU BLU 1 2 3 H5P H4P H3P H2P H1P S2W S5W Z1C~Z3C : FERRITE CORE X1M~X4M : TERMINAL STRIP Y1E~Y3E : ELECTRONIC EXPANSION VALVE COIL V2~V5 : VARISTOR FU1, FU2, FU201: FUSE HE, HL, HN E, AC1, AC2 H1, H2, L1 L2, : CONNECTOR MRM10, MRM20 MRB, MRD MRC/W : MAGNETIC RELAY R1T~R12T : THERMISTOR S2~S102 : CONNECTOR H1P~H5P : PILOT LAMP MID1~MID2 : MOLDED INTER CONNECT DEVICE
Wiring Diagrams Si12-308 4MKS58BVMB, 4MKS75BVMB, 4MKS90BVMB M H5P H4P H3P H2P H1P S2W S5W S1W S3W Y1E Y2E Y3E L N S1W S2W S3W S4W S5W SA1 PCB DB1 M1C M1F L1R Q1L SPM CT1 FERRITE CORE TERMINAL STRIP ELECTRONIC EXPANSION VALVE COIL VARISTOR FUSE : CONNECTOR MAGNETIC RELAY THERMISTOR CONNECTOR PILOT LAMP MOLDED INTER CONNECT DEVICE : : : : : : : : : : : : : : : : S4W R3T R2T R1T Y4E (OUTDOOR) (DISCHARGE) (CONDENSER) LIVE NEUTRAL FORCED OPERATION ON/OFF SW (SW1) SELECT SW (SW2) WIRING ERROR CH
Si12-308 Wiring Diagrams 4MXD80BVMA, 4MXD80BVMT, 4MXS68 / 80BVMB HE YLW CT1 H2 AC2 ~ - BLU V2 + BLK - H5P H4P H3P H2P H1P S5W S2W Z1C~Z3C : FERRITE CORE X1M~X5M : TERMINAL STRIP Y1E~Y4E : ELECTRONIC EXPANSION VALVE COIL V2~V5 : VARISTOR FU1, FU2.
Wiring Diagrams Si12-308 4MXD80BVMC GRN YLW FU201 AC1 MRM10 Z2C H1 + ~ YLW RED V3 CT1 H2 AC2 HN 8 1 BRN 3 1 YLW RED BLU M N 3 W BRN BRN 1 8 1 S34 Q1L 10 RED 10 1 S31 5 9 1 S33 1 S102 5 9 1 A S20 6 1 B S21 6 1 S6 C S22 6 1 D S23 6 WHT YLW ORG BLU BRN RED 1 PCB S80 1 WHT YLW ORG BLU BRN RED 5 WHT YLW ORG BLU BRN RED S101 4 S40 8 1 WHT YLW ORG BLU BRN RED 1 12 RED BLK S51 GRN 1 ROOM D MRB 7 WHT RED BLK WHT 3 1 S71 BLU BLU BLU B
Si12-308 Index Numerics 3 minutes stand-by..................................................95 3-D airflow ...............................................................76 A A1..........................................................................173 A5..................................................................174, 182 A6..........................................................................176 address setting jumper..........................62, 65, 67, 69 air filter ........................
Si12-308 indoor unit PCB abnormality .................................173 input current control ................................................96 input over current detection...................................187 installation condition check ...................................211 insufficient gas ......................................................203 insufficient gas control...........................................105 intelligent eye ..................................................
Si12-308 S70........................................................................232 S71..........................................................72, 231, 248 S8................................................................65, 67, 70 S80..................................................72, 224, 231, 244 S90..........................................72, 225, 231, 244, 253 S92..........................................72, 225, 231, 244, 253 S93..........................................
Si12-308 iv Index
Si12-308 Drawings & Flow Charts A anti-icing function in other rooms ..........................206 automatic air flow control ........................................77 automatic operation.................................................79 auto-swing...............................................................76 B buzzer PCB .............................................................66 C capacitor voltage check.........................................214 compressor lock ..............................
Si12-308 thermistor or related abnormality (outdoor unit)..................................................195 thermistor resistance check ..................................210 troubleshooting with the LED indication ................167 turning speed pulse input on the outdoor unit PCB check ......................215 U unspecified voltage (between indoor and outdoor units) .......181, 206 W wiring diagrams .....................................................275 wiring-error check........................
Head office: Umeda Center Bldg., 4-12, Nakazaki-Nishi 2-chome, Kita-ku, Osaka, 530-8323 Japan Zandvoordestraat 300, B-8400 Oostende, Belgium Tokyo office: Shinjuku Sumitomo Bldg., 6-1 Nishi-Shinjuku 2-chome, Shinjuku-ku, Tokyo, 163-0235 Japan z For further improvement, specifications or designs are subject to change without prior notice.
