SiBE06 - 708 Inverter Pair Floor Standing Type F-Series [Applied Models] z Inverter Pair : Cooling Only z Inverter Pair : Heat Pump
SiBE06-708 Inverter Pair F-Series zCooling Only Indoor Unit FVXS25FV1B FVXS35FV1B FVXS50FV1B Outdoor Unit RKS25F2V1B RKS35F2V1B RKS50F2V1B zHeat Pump Indoor Unit FVXS25FV1B FVXS35FV1B FVXS50FV1B Outdoor Unit RXS25F2V1B RXS35F2V1B RXS50F2V1B Table of Contents i
SiBE06-708 1. Introduction .............................................................................................v 1.1 Safety Cautions ........................................................................................v 1.2 Used Icons .............................................................................................. ix Part 1 List of Functions ................................................................ 1 1. List of Functions ....................................................
SiBE06-708 Part 5 System Configuration....................................................... 51 1. System Configuration............................................................................52 2. Instruction..............................................................................................53 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 Safety Precautions .................................................................................53 Names of Parts................................
SiBE06-708 Part 7 Removal Procedure ........................................................ 147 1. Indoor Unit...........................................................................................148 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Removal of the Air Filter / Front Panel .................................................148 Removal of the Horizontal Blade..........................................................152 Removal of the Electrical Box ............................................................
SiBE06-708 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 SiBE06-708 Warning Be sure to wear a safety helmet, gloves, and a safety belt when working at a high place (more than 2m). Insufficient safety measures may cause a fall accident. In case of R410A refrigerant models, be sure to use pipes, flare nuts and tools for the exclusive use of the R410A refrigerant. The use of materials for R22 refrigerant models may cause a serious accident such as a damage of refrigerant cycle as well as an equipment failure.
SiBE06-708 Introduction 1.1.2 Cautions Regarding Safety of Users Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools may cause an electrical shock, excessive heat generation or fire. If the power cable and lead wires have scratches or deteriorated, be sure to replace them.
Introduction SiBE06-708 Warning Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet securely. If the plug has dust or loose connection, it may cause an electrical shock or fire. Be sure to install the product correctly by using the provided standard For unitary type installation frame. only Incorrect use of the installation frame and improper installation may cause the equipment to fall, resulting in injury.
SiBE06-708 Introduction Caution Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 MΩ or higher. Faulty insulation may cause an electrical shock. Be sure to check the drainage of the indoor unit after the repair. Faulty drainage may cause the water to enter the room and wet the furniture and floor. Do not tilt the unit when removing it. The water inside the unit may spill and wet the furniture and floor.
Introduction x SiBE06-708
SiBE06-708 Part 1 List of Functions 1. List of Functions ......................................................................................
List of Functions SiBE06-708 Basic Function Functions Inverter (with Inverter Power Control) — — Photocatalytic Deodorizing Filter — PAM Control { Air Purifying Filter with Photocatalytic Deodorizing Function — Oval Scroll Compressor — Swing Compressor { Titanium Apatite Photocatalytic Air-Purifying Filter { Rotary Compressor — Mold Proof Air Filter { Reluctance DC Motor { Wipe-clean Flat Panel { Power-Airflow Flap — Mold Proof Operation — Power-Airflow Dual Flaps — Heating
Functions Inverter (with Inverter Power Control) { Category Basic Function Operation Limit for Cooling (°CDB) 1 Operation Limit for Heating (°CWB) Compressor Comfortable Airflow Comfort Control Operation Health & Clean –15 ~18 Functions Air Purifying Filter — Photocatalytic Deodorizing Filter — PAM Control { Air Purifying Filter with Photocatalytic Deodorizing Function — Oval Scroll Compressor — Swing Compressor { Titanium Apatite Photocatalytic Air-Purifying Filter { Rotary Com
List of Functions 4 SiBE06-708 List of Functions
SiBE06-708 Part 2 Specifications 1. Specifications ..........................................................................................6 1.1 Cooling Only.............................................................................................6 1.2 Heat Pump ...............................................................................................
Specifications SiBE06-708 1. Specifications 1.1 Cooling Only 50Hz 220-230-240V Model Indoor Units Outdoor Units Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.) Power Factor COP (Rated) Liquid Piping Connections Gas Drain Heat Insulation Max. Interunit Piping Length Max.
SiBE06-708 Specifications 50Hz 220-230-240V Model Indoor Units Outdoor Units Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.) Power Factor COP (Rated) Liquid Piping Connections Gas Drain Heat Insulation Max. Interunit Piping Length Max.
Specifications 1.2 SiBE06-708 Heat Pump 50Hz 220-230-240V Indoor Units Model FVXS25FV1B RXS25F2V1B Outdoor Units Capacity Rated (Min.~Max.) Moisture Removal Running Current Rated Power Consumption Rated (Min.~Max.) Power Factor COP Rated (Min.~Max.) Liquid Piping Connections Gas Drain Heat Insulation Max. Interunit Piping Length Max.
SiBE06-708 Specifications 50Hz 220-230-240V Indoor Units Model FVXS50FV1B RXS50F2V1B Outdoor Units Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.) Power Factor COP (Rated) Liquid Piping Connections Gas Drain Heat Insulation Max. Interunit Piping Length Max.
Specifications 10 SiBE06-708 Specifications
SiBE06-708 Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram..................................12 1.1 Indoor Unit..............................................................................................12 1.2 Outdoor Unit ...........................................................................................
Printed Circuit Board Connector Wiring Diagram SiBE06-708 1. Printed Circuit Board Connector Wiring Diagram 1.
SiBE06-708 PCB Detail Printed Circuit Board Connector Wiring Diagram PCB(1): Sensor PCB S49 3P191450 PCB(2): Control PCB JB JA JC V1 FU1 S48 S46 S1 LED A S21 S41 S42 S26 2P191446 PCB(3): Service PCB PCB(4): Display PCB SW4 S27 LED1 LED2 SW1 S47 3P191447 SW2 3P191448 Printed Circuit Board Connector Wiring Diagram 13
Printed Circuit Board Connector Wiring Diagram 1.2 SiBE06-708 Outdoor Unit 1.2.
SiBE06-708 PCB Detail Printed Circuit Board Connector Wiring Diagram PCB(1): Filter PCB V3 V2 FU3(20A) S11 (R4293) PCB(2): Control PCB (outdoor unit) S10 S40 LED A S90 S30 S70 HC3 FU2(3.15A) HN3 HC4 S20 Printed Circuit Board Connector Wiring Diagram S80 V1 FU1(3.
Printed Circuit Board Connector Wiring Diagram SiBE06-708 1.2.
SiBE06-708 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Main PCB (outdoor unit) AC1 FU2(3.15A) V3 V11 FU1 (30A) V2 HR1 V6 HR2 AC2 S10 S101 V5 S80 S90 S20 S40 S70 S51 FU3(3.
Printed Circuit Board Connector Wiring Diagram 18 SiBE06-708 Printed Circuit Board Connector Wiring Diagram
SiBE06-708 Part 4 Function and Control 1. Main Functions......................................................................................20 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 Frequency Principle................................................................................20 Wide Angle Louvers and Auto-Swing.....................................................22 Fan Speed Control for Indoor Units........................................................23 Programme Dry Function .................
Main Functions SiBE06-708 1. Main Functions Note: 1.1 See the list of functions for the functions applicable to different models. Frequency Principle Main Control Parameters The compressor is frequency-controlled during normal operation.
SiBE06-708 Inverter Features Main Functions The inverter provides the following features: The regulating capacity can be changed according to the changes in the outside 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 SiBE06-708 Wide Angle Louvers and Auto-Swing Wide-Angle Louvres The louvres, made of elastic synthetic resin, provide a wide range of airflow that guarantees a comfortable air distribution.
SiBE06-708 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 91. 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 SiBE06-708 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.
SiBE06-708 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 SiBE06-708 Thermostat Control Thermostat control is based on the difference between the room temperature and the setpoint. Thermostat OFF Condition The temperature difference is in the zone A. Thermostat ON Condition The temperature difference is above the zone C after being in the zone A. The system resumes from defrost control in any zones except A. The operation turns on in any zones except A.
SiBE06-708 1.7 Main Functions Night Set Mode When the OFF timer is set, the Night Set function automatically activates. The Night Set circuit maintains the airflow setting made by users. The Night Set Circuit The Night Set function continues heating or cooling the room at the set temperature for the first one hour, then automatically raises the temperature setting slightly in the case of cooling, or lowers it slightly in the case of heating, for economical operations.
Main Functions 1.8 SiBE06-708 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.
SiBE06-708 1.9 Main Functions Other Functions 1.9.1 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. 1.9.
Main Functions SiBE06-708 1.9.6 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. 1.9.
SiBE06-708 Function of Thermistor 2. Function of Thermistor A Electrontic expansion valve C Four way valve B Compressor (R5204) A Outdoor Heat Exchanger Thermistor 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. The system sets a target discharge temperature according to the outdoor and indoor heat exchanger temperature, and controls the electronic expansion valve opening so that the target discharge temperature can be obtained. 2.
Control Specification SiBE06-708 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 1.
SiBE06-708 3.2 Control Specification Frequency Control Outline Frequency will be determined according to the difference between room and set temperature. 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. 4. Frequency initial setting. 5. PI control.
Control Specification SiBE06-708 Indoor Frequency Command (∆D signal) The difference between a room temperature and the temperature set by the remote controller will be taken as the “∆D signal” and is used for frequency command. Temperature difference 0 0.5 1.0 1.5 ∆D signal ∗Th OFF 1 2 3 Temperature difference 2.0 ∆D signal 4 Temperature difference 4.0 ∆D signal 8 Temperature difference 6.0 ∆D signal C 2.5 3.0 3.5 5 6 7 4.5 5.0 5.5 9 A B 6.5 7.0 7.
SiBE06-708 3.3 Control Specification Controls at Mode Changing / Start-up 3.3.1 Preheating Operation 25/35 class Operate the inverter in the open phase operation with the conditions including the preheating command from the discharge pipe temperature. Outline 50 class Operate the inverter in the open phase operation with the conditions including the outdoor air temperature, discharge pipe temperature, and fin temperature (internal temperature of PM1).
Control Specification SiBE06-708 3.3.2 Four Way Valve Switching Outline During the heating operation current must be conducted and during cooling and defrosting current must not be conducted. In order to eliminate the switching sound (as the four way valve coil switches from ON to OFF) when the heating is stopped, the delay switch of the four way valve must be carried out after the operation stopped.
SiBE06-708 Control Specification 3.3.3 Four Way Valve Operation Compensation Outline Detail At the beginning of the operation as the four way valve is switched, acquire the differential pressure required for activating the four way valve by having output the operating frequency, which is more than a certain fixed frequency, for a certain fixed time. Starting Conditions 25/35 class 1. When starting compressor for heating. 2. When the operating mode changes to cooling from heating. 3.
Control Specification SiBE06-708 3.3.4 3 Minutes Stand-by Prohibit to turn ON the compressor for 3 minutes after turning it off. (Except when defrosting.) 3.3.5 Compressor Protection Function When turning the compressor from OFF to ON, the upper limit of frequency must be set as follows. (The function must not be used when defrosting.) 3.
SiBE06-708 3.5 Control Specification Input Current Control Outline The microcomputer calculates the input current during the compressor is running, and set the frequency upper limit from such input current. In case of heat pump model, this control is the upper limit control function of the frequency which takes priority of the lower limit of four way valve activating compensation.
Control Specification 3.6 SiBE06-708 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. Detail Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 sec from operation start.
SiBE06-708 3.8 Control Specification Fan Control Outline Fan control is carried out according to the following condition. 1. Fan ON control for electric component cooling fan 2. Fan control when defrosting 3. Fan OFF delay when stopped 4. Fan control for maintaining pressure difference 5. Fan control when the compressor starts for heating 6. Fan control in forced operation 7. Fan control in powerful mode 8. Fan control in low noise operation 9.
Control Specification SiBE06-708 25/35 class 86Hz 74Hz 30Hz Frequency 0Hz 60sec. 60sec. 50sec. Compressor PI control 660sec. 50sec. ON OFF Four way valve ON OFF 5sec. Fan Outdoor temp. ≥ 0˚C 5sec. ON OFF Electronic expansion valve opening Outdoor temp. < 0˚C 450pulse 350pulse 450pulse Initial opening (R6930) 50 class 90Hz 55Hz Frequency PI control 0Hz 120sec. 60sec. Compressor 460 sec. (Max. limit) 30sec. ON OFF Four way valve ON OFF 5sec. Fan Outdoor temp.
SiBE06-708 Control Specification 3.11 Electronic Expansion Valve Control Detail The followings are the examples of control which function in each mode by the electronic expansion valve control. Control for abnormally high discharge pipe temperature 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 Open Control 1.
Control Specification SiBE06-708 3.11.1 Fully Closing with Power ON Initialize the electronic expansion valve when turning on the power, set the opening position and develop pressure equalizing. 3.11.2 Pressure Equalization Control When the compressor is stopped, open and close the electronic expansion valve and develop pressure equalization. 3.11.3 Opening Limit Outline Limit a maximum and minimum opening of the electronic expansion valve.
SiBE06-708 Control Specification 3.11.7 Control when frequency is changed When the target discharge 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 target opening of the electronic expansion valve according to the shift. 3.11.
Control Specification SiBE06-708 3.12 Malfunctions 3.12.1 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. Outside air thermistor 3.12.2 Detection of Overload and Over Current Outline In order to protect the inverter, detect an excessive output current, and for protecting compressor, monitor the OL operation.
SiBE06-708 Control Specification 3.13 Forced Operation Mode Outline Forced operating mode includes only forced cooling. Detail Forced Cooling Item Forced operation allowing conditions Starting/adjustment 1) Command frequency 2) Electronic expansion valve opening 3) Outdoor unit adjustment 4) Indoor unit adjustment End Others Function and Control Forced Cooling 1) The outdoor unit is not abnormal and not in the 3-minute stand-by mode. 2) The operating mode of the outdoor unit is the stop mode.
Control Specification SiBE06-708 3.14 Additional Function 3.14.1 POWERFUL Operation Mode Compressor operating frequency is increased to PI Max. (Max. Hz of operating room) and outdoor unit airflow rate is increased. 3.14.2 Voltage Detection Function Power supply voltage is detected each time equipment operation starts.
SiBE06-708 Control Specification 3.15 Facility Setting Switch (cooling at low outdoor temperature) Outline This function is limited only for facilities (the target of air conditioning is equipment (such as computer)). Never use it in a residence or office (the space where there is a human). Detail You can expand the operation range to –15°C by cutting jumper 8 (25/35 class) or, turning on switch B (SW4) (50 class) on the PCB. If the outdoor temperature falls to –20°C or lower, the operation will stop.
Control Specification 50 SiBE06-708 Function and Control
SiBE06-708 Part 5 System Configuration 1. System Configuration............................................................................52 2. Instruction..............................................................................................53 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 System Configuration Safety Precautions .................................................................................53 Names of Parts....................................................................
System Configuration SiBE06-708 1. System Configuration 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.
SiBE06-708 Instruction 2. Instruction 2.1 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.
Instruction SiBE06-708 • Do not block air inlets nor outlets. Impaired air flow may result in insufficient performance or trouble. • 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.
SiBE06-708 2.2 Instruction Names of Parts Names of parts Indoor Unit 1 2 8 3 7 12 10 4 2 9 5 11 6 Opening the Front Panel How to open the front panel: (page 26.) Air outlet selection switch • This setting blows air from upper outlet only. • This setting automatically decides a blow pattern depending on mode and conditions. • This setting is recommended. 13 • The unit is shipped from the factory with this setting.
Instruction SiBE06-708 Outdoor Unit 25/35 class 50 class 15 15 16 16 17 17 18 19 19 18 Indoor Unit 1. Titanium Apatite Photocatalytic Air-Purifying Filter: • These filters are attached to the inside of the air filters. 2. Air outlet 3. Display 4. Front panel 5. Louvers (vertical blades): (page 12.) • The louvers are inside of the air outlet. 6. Air inlet 7. Air filter 8. Flap (horizontal blade): (page 12.) 9. Operation lamp (green) 10. TIMER lamp (yellow): (page 17.) 11.
SiBE06-708 Instruction Remote Controller 1 2 5 3 6 4 7 8 11 14 16 17 19 9 10 12 13 15 18 20 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. FAN setting button: • It selects the air flow rate setting. 4. POWERFUL button: POWERFUL operation (page 14.) 5.
Instruction 2.3 SiBE06-708 Preparation Before Operation Preparation Before Operation To set the batteries 2 1. Slide the front cover to take it off. Position + and – correctly! 2. Set two dry batteries (LR03·AAA). 3. Set the front cover as before. 3 1 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.
SiBE06-708 Instruction Preparation Before Operation To set the clock 1. Press “CLOCK button”. is displayed. and blinks. 2. Press “SELECT button” to set the current day of the week. 3. Press “CLOCK button”. blinks. 4. Press “SELECT button” to set the clock to the present time. Holding down “ ” or “ ” button rapidly increases or decreases the time display. 5. Press “CLOCK button”.
Instruction SiBE06-708 Turn the breaker ON • Turning ON the breaker closes the flap. (This is a normal procedure.) NOTE Tips for saving energy • Be careful not to cool (heat) the room too much. Keeping the temperature setting at a moderate level helps save energy. • Cover windows with a blind or a curtain. Blocking sunlight and air from outdoors increases the cooling (heating) effect. • Clogged air filters cause inefficient operation and waste energy. Clean them once in about every two weeks.
SiBE06-708 2.4 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 1. Press “MODE selector button” and select a operation mode. • Each pressing of the button advances the mode setting in sequence. : AUTO : DRY 5 4 : COOL : HEAT : FAN 2, 3 1 Cooling only model Heat pump model 2.
Instruction SiBE06-708 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 “ plus “ ”“ ” to “ ” ” are available. The air flow rate setting is not variable. • 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 capacity when the air flow rate is set to a weak level.
SiBE06-708 2.5 Instruction Adjusting the Air Flow Direction Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button ”. • “ ” is displayed on the LCD and the flaps will begin to swing. 2. When the flap has reached the desired position, press “SWING button ” once more. • The flap will stop moving. • “ 1, 2 ” disappears from the LCD.
Instruction SiBE06-708 Air flow selection • Make air flow selection according to what suits you. When setting the air flow selection switch to . • Air conditioner automatically decides the appropriate blowing pattern depending on the operating mode/situation. Operating mode Situation Blowing pattern COOL mode • When the room has become fully cool, or when one hour has passed since turning on the air conditioner.
SiBE06-708 2.6 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 1. Press “POWERFUL button”. • POWERFUL operation ends in 20minutes. 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. • “ ” is displayed on the LCD.
Instruction 2.7 SiBE06-708 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET 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 QUIET operation 1. Press “QUIET button”. • “ ” is displayed on the LCD. To cancel OUTDOOR UNIT QUIET operation 2. Press “QUIET button” again. • “ ” disappears from the LCD.
SiBE06-708 2.8 Instruction ECONO Operation ECONO Operation ECONO operation is a function which enables efficient operation by lowering the maximum power consumption value. To start ECONO operation 1. Press “ECONO button”. •“ ” is displayed on the LCD. To cancel ECONO operation 2. Press “ECONO button” again. •“ ” disappears from the LCD. 1, 2 NOTE • ECONO Operation can only be set when the unit is running.
Instruction 2.9 SiBE06-708 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 • Check that the clock is correct. If not, set the clock to the present time. (page 8.) 1. Press “OFF TIMER button”. is displayed. blinks. 2. Press “SELECT button” until the time setting reaches the point you like.
SiBE06-708 Instruction TIMER Operation To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. (page 8.) 1. Press “ON TIMER button”. is displayed. blinks. 2. Press “SELECT 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. • The TIMER lamp lights up.
Instruction SiBE06-708 2.10 WEEKLY TIMER Operation WEEKLY TIMER Operation Up to 4 timer settings can be saved for each day of the week. To use WEEKLY TIMER operation • Make sure the day of the week and time are set. If not, set the day of the week and time. (page 8.) • The following procedure is to make a reservation on Monday for Tuesday 6:00 am/27˚C. 1. Press “ button”. • The day of the week and the reservation number will be displayed. • 1 to 4 settings can be made per day. 2.
SiBE06-708 Instruction WEEKLY TIMER Operation 7. Press “NEXT button”. • The time will be set. • “ ” and the temperature blink. 8. Press “SELECT button” to select the desired temperature. • The temperature can be set between 10˚C and 32˚C. • To return to the time setting, press “BACK button”. • The set temperature is only displayed when the mode setting is on. 9. Press “NEXT button”. • The temperature will be set. • The temperature will be set and go to the next reservation setting.
Instruction SiBE06-708 To cancel WEEKLY TIMER operation 11.Press “WEEKLY button” to deactivate the WEEKLY operation. • The “ ” will disappear from the display. • The TIMER lamp goes off. • To reactivate the WEEKLY TIMER operation, press the “WEEKLY button” again. 11 NOTE WEEKLY TIMER • Do not forget to set the time on the remote control first. • The day of the week, time and ON/OFF can be set with WEEKLY TIMER.
SiBE06-708 Instruction WEEKLY TIMER Operation Confirming a reservation • The reservation can be confirmed. 1. Press “ button”. • The day of the week and the reservation number of the current day will be displayed. 2. Press “SELECT button” to select the day of the week and the reservation number to be confirmed. • Pressing the “SELECT button” displays the reservation details. 1, 3 4, 6 3. Press “ button”. • Reservation confirmation complete. Canceling all reservations 2, 5 4.
Instruction SiBE06-708 Setting WEEKLY TIMER using copy mode • A reservation made once can be easily copied and the same settings used for another day of the week. 1. Press “ button”. 2. Press “SELECT button” to confirm the day of the week to be copied. 3. Press “COPY button”. • This activates copy mode. • Copy whole reservation of the selected day of the week. 4. Press “SELECT button” to select the destination day of the week. 1, 6 3, 5 2, 4 5. Press “COPY button”.
SiBE06-708 Instruction 2.11 Care and Cleaning 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 panel 1. Open the front panel. • Slide the two stoppers on the left and right sides inward until they click. 2. Remove the front panel. • Remove the string. • Allowing the front panel to fall forward will enable you to remove it. String 3.
Instruction SiBE06-708 Filters 1. Open the front panel. (page 26.) 2. Remove the air filter. • Press the claws on the right and left of the air filter down slightly, then pull upward. 3. Take off the Titanium Apatite Photocatalytic Air-Purifying Filter. • Hold the tabs of the frame, and remove the claws in 4 places. 4. Clean or replace each filter. See figure. 5. Set the air filter and Titanium Apatite Photocatalytic Air-Purifying Filter as they were and close the front panel.
SiBE06-708 Instruction NOTE • Operation with dirty filters: (1) cannot deodorize the air. (2) cannot clean the air. (3) results in poor heating or cooling. (4) may cause odour. • To order Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service shop there you bought the air conditioner. • Dispose of the old filter as flammable waste. Item Titanium Apatite Photocatalytic Air-Purifying Filter (without frame) 1 set Part No.
Instruction SiBE06-708 2.12 Troubleshooting 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. • This is to protect the air conditioner. You should wait for about 3 minutes. • When ON/OFF button was pressed soon after operation was stopped. • When the mode was reselected. Hot air does not flow out soon after the start of heating operation.
SiBE06-708 Instruction 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.
Instruction SiBE06-708 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.
SiBE06-708 Part 6 Service Diagnosis 1. 2. 3. 4. Caution for Diagnosis............................................................................82 Problem Symptoms and Measures .......................................................83 Service Check Function ........................................................................84 Troubleshooting ....................................................................................87 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.
Caution for Diagnosis SiBE06-708 1. Caution for Diagnosis 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.
SiBE06-708 Problem Symptoms and Measures 2. Problem Symptoms and Measures Symptom Check Item None of the units operates. Check the power supply. Check the type of the indoor units. Check the outdoor air temperature. Diagnosis with remote controller indication Check the remote controller addresses. Operation sometimes stops. Check the power supply. Check the outdoor air temperature. Equipment operates but does not cool, or does not heat (only for heat pump model).
Service Check Function SiBE06-708 3. Service Check Function In the ARC452A series remote controller, the temperature display sections on the main unit indicate corresponding codes. Check Method 1 1. When the timer cancel button is held down for 5 seconds, a “00” indication flashes on the temperature display section. TIMER CANCEL button It cancels the timer setting. < ARC452A2 > (R6757) 2. Press the timer cancel button repeatedly until a continuous beep is produced.
SiBE06-708 Service Check Function Check Method 2 1. Enter the diagnosis mode. Press the 3 buttons (TEMP ,TEMP , MODE) simultaneously. (R4272) The digit of the number of tens blinks. Try again from the start when the digit does not blink. (R4273) 2. Press the TEMP button. Press TEMP or TEMP and change the digit until you hear the sound of “beep” or “pi pi”. (R4274) 3. Diagnose by the sound. “pi” : The number of tens does not accord with the error code.
Service Check Function 5. Press the TEMP button. Press TEMP or TEMP SiBE06-708 and change the digit until you hear the sound of “beep”. (R4277) 6. Diagnose by the sound. “pi” : The both numbers of tens and units do not accord with the error code. “pi pi” : The number of tens accords with the error code. “beep” : The both numbers of tens and units accord with the error code. 7. Determine the error code. The digits indicated when you hear the “beep” sound are error code.
SiBE06-708 Troubleshooting 4. Troubleshooting 4.
Troubleshooting 4.2 SiBE06-708 Indoor Unit PCB Abnormality A1 Remote Controller Display 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.
SiBE06-708 4.3 Troubleshooting 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 Supposed Causes Service Diagnosis During heating operations, the temperature detected by the indoor heat exchanger thermistor is used for the high pressure control (stop, outdoor fan stop, etc.
Troubleshooting SiBE06-708 Troubleshooting Caution Check No.06 Refer to P.139 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.
SiBE06-708 4.4 Troubleshooting 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 does not reach the demanded rotation speed of the target tap, and is less than 50% of the maximum fan motor rotation speed.
Troubleshooting SiBE06-708 Troubleshooting Caution Check No.01 Refer to P.136 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn off power supply and rotate fan by hand. 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.
SiBE06-708 4.5 Troubleshooting Thermistor or Related Abnormality (Indoor Unit) C4, C9 Remote Controller Display 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 Ω) or below about -50°C (more than 1,860 kΩ).
Troubleshooting 4.6 SiBE06-708 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 94 Faulty outdoor unit PCB. Faulty indoor unit PCB.
SiBE06-708 Troubleshooting Troubleshooting Caution Check No.10 Refer to P.142 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the indoor unit-outdoor unit connection wires. Is there any wiring error? YES Correct the indoor unit-outdoor unit connection wires. NO Check the outdoor unit's LED A. Is LED A flashing? NO Diagnose the outdoor unit. YES Check the voltage of the indoor unit-outdoor unit connection wires between No. 1 and No.
Troubleshooting 4.7 SiBE06-708 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 pair type and multi type) by the indoor / outdoor transmission signal. Malfunction Decision Conditions The pair type and multi type are interconnected.
SiBE06-708 4.8 Troubleshooting Outdoor Unit PCB Abnormality Remote Controller Display E1 Method of Malfunction Detection Detect within the programme of the microcomputer that the programme is in normal running Malfunction Decision Conditions When the programme of the microcomputer is in abnormal running order. Supposed Causes Out of control of microcomputer caused by external factors z Noise z Momentary fall of voltage z Momentary power loss Defective outdoor unit PCB order.
Troubleshooting 4.9 SiBE06-708 OL Activation (Compressor Overload) Remote Controller Display E5 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 Supposed Causes 60-minute compressor running time (total time).
SiBE06-708 Troubleshooting 4.10 Compressor Lock E6 Remote Controller Display Method of Malfunction Detection A compressor lock is detected by checking the compressor running condition through the position detection circuit. Malfunction Decision Conditions 25/35 class The system judges the compressor lock, and stops due to over current. The system judges the compressor lock, and cannot operation with position detection within 15 seconds after start up.
Troubleshooting SiBE06-708 4.11 DC Fan Lock Remote Controller Display E7 Method of Malfunction Detection A fan motor or related 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.
SiBE06-708 Troubleshooting 4.12 Input Over Current Detection 4.12.1 25/35 Class Remote Controller Display E8 Method of Malfunction Detection An input over-current is detected by checking the input current value with the compressor running. Malfunction Decision Conditions The following current with the compressor running continues for 2.5 seconds. Supposed Causes Cooling / Heating: Above 9.
Troubleshooting SiBE06-708 4.12.2 50 Class Remote Controller Display E8 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. Supposed Causes 102 CT input : Above 20 A The system will be shut down if the error occurs 16 times.
SiBE06-708 Troubleshooting Troubleshooting Caution Check No.07 Refer to P.140 Check No.08 Refer to P.141 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.
Troubleshooting SiBE06-708 4.13 Four Way Valve Abnormality 4.13.1 25/35 class Remote Controller Display EA Method of Malfunction Detection The indoor air temperature thermistor, the indoor unit heat exchanger 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. Malfunction Decision Conditions A following condition continues over 10 minute after operating 5 minutes.
SiBE06-708 Troubleshooting Troubleshooting Check No.05 Refer to P.137 Check No.06 Refer to P.139 Caution 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.142 Correct. Reconnect. NO Check the continuity of the four way valve coil and harness. Disconnect the harness from the connector. Resistance between harnesses about 3kΩ±0.
Troubleshooting SiBE06-708 4.13.2 50 class Remote Controller Display EA Method of Malfunction Detection The room temperature thermistor, the indoor unit heat exchanger 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. Malfunction Decision Conditions A following condition continues over 1 minute after operating 10 minutes. Cooling / dry operation (room temp.
SiBE06-708 Troubleshooting Troubleshooting Caution Check No.05 Refer to P.137 Check No.06 Refer to P.139 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.142 Correct. Reconnect. NO Check the continuity of the four way valve coil and harness. Disconnect the harness from the connector.
Troubleshooting SiBE06-708 4.14 Discharge Pipe Temperature Control Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions F3 The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the temperature being detected by the discharge pipe thermistor. 25/35 class If a stop takes place 4 times successively due to abnormal discharge pipe temperature, the system will be shut down.
SiBE06-708 Troubleshooting Troubleshooting Check No.04 Refer to P.136 Check No.06 Refer to P.139 Check No.11 Refer to P.142 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check No. 06 Check the thermistors. Functioning Check No. 04 Check the electronic expansion valve. Malfunctioning z Discharge pipe thermistor z Outdoor unit heat exchanger thermistor z Outdoor temperature thermistor Malfunctioning Replace a defective thermistor.
Troubleshooting SiBE06-708 4.15 High Pressure Control in Cooling Remote Controller Display F6 Method of Malfunction Detection High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the temperature being sensed by the heat exchanger thermistor exceeds the limit. Malfunction Decision Conditions Activated when the temperature being sensed by the heat exchanger thermistor rises above 65°C.
SiBE06-708 Troubleshooting Troubleshooting Caution Check No.04 Refer to P.136 Check No.06 Refer to P.139 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the installation space. Check No.07 Installation condition check Abnormal Normal Check No.07 Refer to P.140 Check No.09 Outdoor fan check Abnormal Normal Check No.09 Refer to P.141 Change the air outlet grille position. Change the installation location. Clean the heat exchanger.
Troubleshooting SiBE06-708 4.16 Compressor System Sensor Abnormality 4.16.1 25/35 Class Remote Controller Display H0 Method of Malfunction Detection The system checks the DC current before the compressor starts. Malfunction Decision Conditions If the DC current before compressor start-up is out of the range 0.5-4.5 V (sensor output Supposed Causes PCB defective Broken or poorly connected harness converted to voltage value) or if the DC voltage before compressor start-up is below 50 V.
SiBE06-708 Troubleshooting 4.16.2 50 Class Remote Controller Display Method of Malfunction Detection H0 Fault condition is identified by the supply voltage and the DC voltage which is detected before the compressor startup. Fault condition is identified by compressor current which is detected right after the compressor startup. Malfunction Decision Conditions The detected valve of the supply voltage and the DC voltage is obviously low or high.
Troubleshooting SiBE06-708 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn off the power Reactor connection check Connection OK? NO Connect properly. YES Compressor connection check Connection OK? NO Connect properly. YES Reactor check 10Ω or less? Disconnect the reactor from the outdoor unit PCB and measure the resistance value between reactor terminals with tester. NO Replace the reactor.
SiBE06-708 Troubleshooting 4.17 Position Sensor Abnormality Remote Controller Display H6 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. Clearing condition: Continuous run for about 10 minutes (35 class) or 5 minutes (50 class).
Troubleshooting SiBE06-708 4.18 DC Voltage / Current Sensor Abnormality Remote Controller Display H8 Method of Malfunction Detection Detecting abnormality of the DC sensor by the running frequency of compressor and by the input current multiplied DC voltage and current. Malfunction Decision Conditions The compressor running frequency is below 52 Hz. (The input current is also below 0.1 A.) If this error repeats 4 times, the system will be shut down.
SiBE06-708 Troubleshooting 4.19 CT or Related Abnormality Remote Controller Display H8 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 0.5 A.) If this error repeats 4 times, the system will be shut down.
Troubleshooting SiBE06-708 Troubleshooting Caution Check No.12 Refer to P.143 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.
SiBE06-708 Troubleshooting 4.20 Thermistor or Related Abnormality (Outdoor Unit) Remote Controller Display P4, J3, J6, H9 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.] Malfunction Decision Conditions The thermistor input is above 4.96 V or below 0.04 V with the power on.
Troubleshooting SiBE06-708 Troubleshooting Caution Check No.06 Refer to P.139 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. 06 Check the thermistor resistance value. NO Normal? YES Replace defective one(s) of the following thermistors.
SiBE06-708 Troubleshooting 4.21 Electrical Box Temperature Rise Remote Controller Display L3 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 (95°C). (Reset is made when the temperature drops below 70°C (80°C).
Troubleshooting SiBE06-708 Troubleshooting Caution Check No.06 Refer to P.139 Check No.07 Refer to P.140 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. Error again or outdoor unit fan activated? WARNING To cool down the electricals, the outdoor unit fan gets started when the radiation fin temperature rises above 80˚C (95˚C) and stops itself when it drops below 70˚C (80˚C). YES NO Check No.
SiBE06-708 Troubleshooting 4.22 Radiation Fin Temperature Rise 4.22.1 25/35 Class Remote Controller Display L4 Method of Malfunction Detection A radiation fin temperature rise is detected by checking the radiation fin thermistor with the compressor on. Malfunction Decision Conditions If the radiation fin temperature with the compressor on is above 90°C. Clearing condition : when the temperature drops below 85°C.
Troubleshooting SiBE06-708 Troubleshooting Caution Check No.06 Refer to P.139 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.07 Refer to P.140 Error displayed again? Check No.09 Refer to P.141 YES NO Check No. 06 Check the thermistor resistance value. z Fin thermistor Check the radiation fin temperature.
SiBE06-708 Troubleshooting 4.22.2 50 Class Remote Controller Display L4 Method of Malfunction Detection A radiation fin temperature rise is detected by checking the radiation fin thermistor with the compressor on. Malfunction Decision Conditions If the radiation fin temperature with the compressor on is above 105°C, The error is cleared when the temperature drops below 99°C. If a radiation fin temperature rise takes place 4 times successively, the system will be shut down.
Troubleshooting SiBE06-708 Troubleshooting Check No.06 Refer to P.139 Caution 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.07 Refer to P.140 Error displayed again? Check No.09 Refer to P.141 YES NO Check the radiation fin temperature. Above 105˚C? YES Check No. 09 Check the outdoor unit fan or related.
SiBE06-708 Troubleshooting 4.23 Output Over Current Detection Remote Controller Display L5 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. An output over-current input is fed from the output over-current detection circuit to the microcomputer.
Troubleshooting SiBE06-708 Troubleshooting Caution Check No.07 Refer to P.140 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. NO Stop valve fully open? Check No.08 Refer to P.141 Check No.13 Refer to P.
SiBE06-708 Troubleshooting 4.24 Insufficient Gas 4.24.1 25/35 Class Remote Controller Display Method of Malfunction Detection U0 Gas shortage detection I: Gas shortage is detected by checking the input current value and the compressor running frequency. If the gas is short, the input current is smaller than the normal value. Gas shortage detection II: Gas shortage is detected by checking the discharge temperature and the opening of the electronic expansion valve.
Troubleshooting SiBE06-708 Troubleshooting Check No.04 Refer to P.136 Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Any thermistor disconnected? Check No.06 Refer to P.139 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.
SiBE06-708 Troubleshooting 4.24.2 50 Class Remote Controller Display Method of Malfunction Detection U0 Gas shortage detection I : A gas shortage is detected by checking the CT-detected input current value and the compressor running frequency. Gas shortage detection II : A gas shortage is detected by checking the difference between indoor unit heat exchanger temperature and room temperature as well as the difference between outdoor unit heat exchanger temperature and room temperature.
Troubleshooting SiBE06-708 Troubleshooting Caution Check No.04 Refer to P.136 Check No.06 Refer to P.139 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Any thermistor disconnected? 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.
SiBE06-708 Troubleshooting 4.25 Low-voltage Detection or Over-voltage Detection Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions U2 An abnormal voltage rise or drop is detected by checking the detection circuit or DC voltage detection circuit. 25/35 class An over-voltage signal is fed from the over-voltage detection circuit to the microcomputer (The voltage is over 400V). The system will be shut down if the error occurs 255 times.
Troubleshooting SiBE06-708 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check the supply voltage. Supply voltage as specified? NO Correct the power supply. YES Rotate fan by hand. Does fan rotate smoothly? NO Replace fan motor and outdoor unit PCB . YES (Precaution before turning on the power again) Make sure the power has been off for at least 30 seconds. Turn on the power again.
SiBE06-708 Troubleshooting 4.26 Signal Transmission Error on Outdoor Unit PCB Remote Controller Display U7 Method of Malfunction Detection Communication error between microcomputer mounted on the main microcomputer and PM1. Malfunction Decision Conditions When the data sent from the PM1 can not be received successively for 9 sec. The abnormality is determined if the above fault conditions occurs once. Fault counter is reset when the data from the PM1 can be successfully received.
Check SiBE06-708 5. Check 5.1 How to Check 5.1.1 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). 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 Motor power supply voltage Unused Unused P.
SiBE06-708 Check 5.1.3 Four Way Valve Performance Check Check No.05 25/35 class Turn off the power and turn it on again. Start the heating-mode run. S80 voltage at DC 220-240 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 3kΩ±0.5kΩ? NO YES Replace the four way valve coil.
Check SiBE06-708 50 class Turn off the power and turn it on again. Start the heating-mode run. S80 voltage at DC 220-240 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. (Fig.
SiBE06-708 Check 5.1.4 Thermistor Resistance Check Check No.06 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 Temperature (°C) -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 Service Diagnosis 211.0 (kΩ) 150 116.5 88 67.2 51.9 40 31.8 25 20 16 13 10.6 8.7 7.
Check SiBE06-708 5.1.5 Installation Condition Check Check No.07 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.
SiBE06-708 Check 5.1.6 Discharge Pressure Check Check No.08 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) 5.1.7 Outdoor Unit Fan System Check (With DC Motor) Check No.09 Check the outdoor unit fan system.
Check SiBE06-708 5.1.8 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] 5.1.9 Inverter Units Refrigerant System Check Check No.
SiBE06-708 Check 5.1.10 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.
Check SiBE06-708 50 class Checking the power transistor 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 the power transistor's supply voltage is below 50 V using the tester. z For the UVW, make measurements at the Faston terminal on the board or the relay connector.
SiBE06-708 Check 5.1.12 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. 5.1.13 Turning Speed Pulse Input on the Outdoor Unit PCB Check Check No.
Check 146 SiBE06-708 Service Diagnosis
SiBE06-708 Part 7 Removal Procedure 1. Indoor Unit...........................................................................................148 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Removal of the Air Filter / Front Panel .................................................148 Removal of the Horizontal Blade..........................................................152 Removal of the Electrical Box ..............................................................153 Removal of the PCB.....................................
Indoor Unit SiBE06-708 1. Indoor Unit 1.1 Removal of the Air Filter / Front Panel Procedure Step Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points 1. Appearance 1 This is an appearance of the product. 2 Details of the operation panel. Operation lamp Timer lamp Indoor Unit ON / OFF switch (R6766) 2. Removing the front panel. 1 Undo 2 knobs from the top of the front panel.
SiBE06-708 Step 2 Indoor Unit Procedure Points Open the front panel. Hook Preventing drop of the front panel (R6769) 3 Press the 2 right and left hooks at the top of the air filter downward, bend the filter to remove. 4 Pull the air filter up and remove it.
Indoor Unit Step SiBE06-708 Procedure 5 Undo 3 hooks from the bottom of the front panel and remove the front panel. 6 When installing the air filter, catch the 3 hooks at the bottom of the front panel and hitch the string to prevent the front panel from dropping. Points Hooks at the bottom of the air filter (R6773) 7 150 Remove the 4 screws from the front grille.
SiBE06-708 Step 8 Indoor Unit Procedure Points 3 hooks are provided at the Pull the front grill to your side to remove. top of the main unit, but pull the front grille to your side to remove. (R6775) 9 Slide the indicator to the left side and undo the hooks to remove.
Indoor Unit 1.2 Removal of the Horizontal Blade Procedure Step 1 2 3 152 SiBE06-708 Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Open the horizontal blade. Undo the hook from the central supporting plate. Bend the blade to remove the right and left shafts and remove the horizontal blade. Remove the left shaft first and then remove the right shaft from the key groove.
SiBE06-708 1.3 Removal of the Electrical Box Procedure Step 1 2 Indoor Unit Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Remove the grounding screws. Open the sensor fixing plate. Sensor fixing plate Grounding screws 3 Points (R6781) Pull the front shelter to your side. Front shelter (R6782) 4 To detach the connection wire, remove the screw from the cable lock and remove the 4 screws from the power terminal board.
Indoor Unit Step 5 SiBE06-708 Procedure Points Disconnect 3 connectors. S42: To M1S S41: To M2S S1: To fan motor (R6784) 6 Remove the fixing screw. 7 Pull the electrical box to your side and remove. 8 Pull the heat exchanger thermistor out.
SiBE06-708 1.4 Indoor Unit Removal of the PCB Procedure Warning Step Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure 1. Removing the shelter. 1 Undo the 8 hooks from the side flame-proof plate to remove the plate. Points Hooks Side shelter Hooks Hooks (R6788) 2. Removing the sensor PCB. 1 Undo the 2 hooks. Hooks (R6794) 2 Disconnect the connector S49 and remove the sensor PCB.
Indoor Unit Step SiBE06-708 Procedure Points Undo the left hook first. 3. Removing the service PCB. 1 Undo the 2 hooks. Hook (R6790) 2 Undo the 2 hooks. Hooks (R6792) 3 Disconnect the connector and remove the service PCB.
SiBE06-708 Step Indoor Unit Procedure 4. Removing the display PCB. 1 Undo the 2 hooks. Points Hooks (R6796) 2 Disconnect the connector and remove the display PCB. Display PCB (R6797) 5. Removing the control PCB. 1 Cut the cable lock belt and pull the all Faston terminals out from the power terminal board. Cable lock Faston terminal (R6798) 2 Disconnect each connector.
Indoor Unit SiBE06-708 Step 3 Remove the 2 screws. Procedure Points Screw Screw (R6800) 4 Remove the control PCB. Varistor V1 S48 S46 Fuse 250V 3.
SiBE06-708 1.5 Indoor Unit Removal of the Vertical Blade Procedure Warning Step Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure 1. Removing the vertical blade (upper). 1 Remove the 2 screws from the upper discharge grille. Points Screw Screw (R6803) 2 Remove the 2 right and left hooks and central hook from the vertical blade.
Indoor Unit Step 4 SiBE06-708 Procedure Points Remove the 2 screws and remove the swing motor. Shaft (R6808) Be careful not to 2. Removing the vertical blade (lower). 1 Remove the right and left screws. 2 contaminate the floor with the drain. Remove the drain hose and unhook the swing motor harness.
SiBE06-708 Step Indoor Unit Procedure 3 Pull the lower part of the vertical blade to your side to remove. 4 Remove the 2 screws from the swing motor. 5 Remove the damper. 6 Remove the seal material from the front of the flap, undo the hooks, unhook the drain pan and remove the vertical blade.
Indoor Unit 1.6 SiBE06-708 Removal of the Heat Exchanger Procedure Warning Step Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Make sure that the gases are removed after the pump down work. After that, start the removal of the heat exchanger. 1 Remove the flared joint from the liquid pipe and gas pipe using 2 wrenches. 2 Press the right hook to the inner side and undo it. After that, undo the left hook.
SiBE06-708 1.7 Indoor Unit Removal of the Fan Rotor / Fan Motor Procedure Step Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points 1. Removing the fan rotor. 1 Remove the 4 screws from the bellmouth. 2 Remove the nut to remove the fan rotor. Nut (R6821) 2. Removing the fan motor. 1 Unhook the harness from the fan motor. Hook (R6822) 2 Remove the 3 screws and remove the fan motor.
Indoor Unit SiBE06-708 Step 3 Procedure Points Pick the hooks with your fingers to remove the harness retainer. Harness retainer Hooks (R6824) Press the 2 hooks toward 3. Removing the housing. 1 Remove 3 screws from the upper housing. the back side and remove the housing. Hooks (R6825) 2 Press the 2 hooks toward Remove 2 screws from each right and left housing respectively. the back side and remove the housing.
SiBE06-708 Outdoor Unit : 50 Class 2. Outdoor Unit : 50 Class 2.1 Removal of the Panels and Plates Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points 1. Remove the panels and plates. 1 Loosen the 4 screws and lift the top panel. Take care not to cut your finger by the fins of the heat exchanger. 2 Loosen the 4 screws and remove the discharge grille.
Outdoor Unit : 50 Class SiBE06-708 Procedure Step Points The front grille has 4 hooks. Slide the discharge grille upwards and remove it. 3 Loosen the 6 screws of the front panel. 4 Push the front panel and undo the hooks. Lift the clamp plate and remove it.
SiBE06-708 Procedure Step 5 Outdoor Unit : 50 Class Undo the left side hooks, and then the right side hook. Remove the front panel. Points Lift the front panel and remove it while pushing the right side panel inwards. Lift the front panel and undo the right side hook. Fit the right side of the front panel first when installing.
Outdoor Unit : 50 Class SiBE06-708 Procedure Step Points 2. Remove the stop valve cover. 1 Loosen the screw of the stop valve cover. 2 Pull down the stop valve cover to undo the hooks and remove it. The stop valve cover has 6 hooks.
SiBE06-708 2.2 Outdoor Unit : 50 Class Removal of the Fan Motor / Propeller Fan Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points Remove the top panel and the front panel. 1. Remove the electrical box cover. 1 Loosen the screw on the back of the shelter. Shelter This procedure is not necessary to remove the propeller fan only. Hooks (R5255) 2 3 Undo the 2 hooks and remove it.
Outdoor Unit : 50 Class SiBE06-708 Procedure Step Points 2. Remove the fan motor. 1 Disconnect the connector for fan motor (S70). 2 170 The illustration shows arrangement of the fan motor lead wire.
SiBE06-708 Procedure Step 3 Outdoor Unit : 50 Class Points Unscrew the washerfitted nut (M10) of the propeller fan with a spanner. Align mark of the propeller fan with D-cut section of the motor shaft when reassembling. 4 Remove the 4 screws from the fan motor.
Outdoor Unit : 50 Class Procedure Step 5 SiBE06-708 Pull the fan motor out. Points Put the lead wire through the back of the motor when reassembling (so as not to be entangled with the propeller fan).
SiBE06-708 2.3 Outdoor Unit : 50 Class Removal of the Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points Remove the top panel and the front panel. 1. Remove the shield plate. 1 Loosen the 2 screws. 2 Slide the cover upward to undo the one hook on the bottom left, and then remove the plate. 3 Disconnect the 2 power supply cables and the 1 earth wire.
Outdoor Unit : 50 Class Procedure Step 4 Disconnect the 2 earth wires. 5 Loosen the 3 screws of the right side panel. 6 Loosen the fixing screw of the electrical box.
SiBE06-708 Outdoor Unit : 50 Class Procedure Step Points Insert the 2 hooks of the lower part and the 1 hook of the upper back when reassembling. Hook (R5272) Hooks 7 Disconnect the connectors of the front side. S20: electronic expansion valve S40: overload protector S80: four way valve S90: thermistors (discharge pipe, outdoor air, heat exchanger) 8 Disconnect the relaying wire connector for the compressor.
Outdoor Unit : 50 Class Procedure Step 9 Release the clamp and undo the wire from the hook. 10 Lift the electrical box and remove it.
SiBE06-708 2.4 Outdoor Unit : 50 Class Removal of the PCB Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points Remove the electrical box. 1. Remove the PCB. 1 Disconnect the connectors for the control PCB (S52, S102). 2 Undo the 4 clamps by pliers. 3 Loosen the fixing screw of the cable way board and disconnect the earth wire.
Outdoor Unit : 50 Class Procedure Step 4 Undo the hook on the right. 5 Open the cable way board. 6 Disconnect the harnesses. 7 Disconnect the 2 harnesses for the reactor (HR1, HR2).
SiBE06-708 Outdoor Unit : 50 Class Procedure Step 8 Loosen the 3 fixing screws for the main PCB. 9 Undo the 4 hooks. 10 Lift up and remove the PCB.
Outdoor Unit : 50 Class 2.5 Removal of the Sound Blanket Procedure 1 Remove the sound blanket (back). 2 Remove the sound blanket (outer). 180 Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 3 SiBE06-708 Points Since the piping ports on the sound blanket (outer) are torn easily, remove the blanket carefully. Remove the sound blanket (top-upper).
SiBE06-708 Outdoor Unit : 50 Class Procedure Step Points 4 Remove the sound blanket (top-lower). 5 Remove the sound blanket (inner). Since the piping ports on the Release the discharge pipe thermistor. Pay attention to the direction Cut the clamp by nippers. Disconnect the outdoor heat exchanger thermistor. Clamps should be always 6 7 Removal Procedure sound blanket (inner) are torn easily, remove the blanket carefully.
Outdoor Unit : 50 Class 2.6 Removal of the Four Way Valve Procedure 2 3 Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Points Remove the electronic expansion valve coil. The illustration is for heat Loosen the screw of the four way valve coil. Provide a protective sheet or Heat up the brazed part of the four way valve and disconnect. Be sure to apply nitrogen replacement when heating up the brazed part.
SiBE06-708 Procedure Step 4 Outdoor Unit : 50 Class Heat up every brazed part in turn and disconnect. Points In case of the difficulty with gas brazing machine 1. Disconnect the brazed part where is easy to disconnect and restore. 2. Cut pipes on the main unit by a miniature copper tube cutter in order to make it easy to disconnect. Removal Procedure Note: Do not use a metal saw for cutting pipes by all means because the sawdust come into the circuit.
Outdoor Unit : 50 Class 2.7 SiBE06-708 Removal of the Compressor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 Remove the terminal cover. 2 Disconnect the lead wires of the compressor. Points Be careful so as not to burn the compressor terminals or the name plate. Make a note.
SiBE06-708 Outdoor Unit : 50 Class Procedure Step 3 Release the clamp by pliers to detach the wire harness for the compressor. 4 Remove the putty. Points The illustration is for heat pump models as representative. Before working, make sure that the refrigerant is empty in the circuit. Be sure to apply nitrogen replacement when heating up the brazed part. The illustration is for heat pump models as representative. 5 Heat up the brazed parts indicated by the arrows.
Outdoor Unit : 50 Class Procedure Step 6 SiBE06-708 Points Unscrew the nut of the compressor. Before working, make sure that the refrigerant is empty in the circuit. Be sure to apply nitrogen replacement when heating up the brazed part. 7 Heat up the brazed part of the discharge side and disconnect. 8 Heat up the brazed part of the suction side and disconnect. Warning Ventilate when refrigerant leaks during the work. (If refrigerant contacts fire, it will cause to arise toxic gas.
SiBE06-708 Part 8 Others 1. Others .................................................................................................188 1.1 Test Run from the Remote Controller ..................................................188 1.2 Jumper Settings ...................................................................................
Others SiBE06-708 1. Others 1.1 Test Run from the Remote Controller For Heat pump In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable temperature. Trial operation may be disabled in either mode depending on the room temperature. After trial operation is complete, set the temperature to a normal level.
SiBE06-708 1.2 Others Jumper Settings 1.2.1 When Two Units are Installed in One Room When two indoor units are installed in one room, the two wireless remote controllers can be set for different addresses. How to set the different addresses 1) Remove the front grille. 2) Live the sensor securing plate and remove the front metal plate cover. 3) Remove connectors 5P, 6P, and 7P. 4) Remove the electric box (1 screw). 5) Remove the thermistor. 6) Remove the side metal plate cover (8 tabs).
Others 190 SiBE06-708 Others
SiBE06-708 Part 9 Appendix 1. Piping Diagrams..................................................................................192 1.1 Indoor Units ..........................................................................................192 1.2 Outdoor Units .......................................................................................193 2. Wiring Diagrams..................................................................................195 2.1 Indoor Units ......................................
Piping Diagrams SiBE06-708 1. Piping Diagrams 1.1 Indoor Units FVXS25FV1B, FVXS35FV1B FVXS50FV1B INDOOR UNIT MUFFLER ASSY 7.0CuT INDOOR UNIT 6.4CuT HEAT EXCHANGER MUFFLER ASSY 7.0CuT THERMISTOR ON HEAT EXCH. M FIELD PIPING (6.4CuT) TURBO FAN FAN MOTOR M 9.5CuT FIELD PIPING (9.5CuT) REFRIGERANT FLOW FIELD PIPING (6.4CuT) TURBO FAN FAN MOTOR FIELD PIPING (12.7CuT) 9.5CuT 6.4CuT 6.4CuT 6.4CuT REFRIGERANT FLOW COOLING COOLING HEATING HEATING 4D056137 192 THERMISTOR ON HEAT EXCH. 6.
SiBE06-708 1.2 Piping Diagrams Outdoor Units RKS25F2V1B, RKS35F2V1B OUTDOOR UNIT OUTDOOR TEMPERATURE THERMISTOR 9.5CuT 7.0CuT HEAT EXCHANGER 7.0CuT 4.8CuT MUFFLER WITH FILTER M MOTOR OPERATED VALVE MUFFLER WITH FILTER 9.5CuT PROPELLER FAN φ. 4.0×ID. 2.0CuT HEAT EXCHANGER THERMISTOR 4.8CuT 6.4CuT 6.4CuT 9.5CuT FOUR WAY VALVE NORMALLY : OFF 9.5CuT 7.9CuT 6.4CuT MUFFLER WITH FILTER LIQUID STOP VALVE MUFFLER 7.9CuT DISCHARGE PIPE THERMISTOR 9.5CuT 9.
Piping Diagrams SiBE06-708 RXS25F2V1B, RXS35F2V1B OUTDOOR UNIT OUTDOOR TEMPERATURE THERMISTOR 9.5CuT 7.0CuT HEAT EXCHANGER 7.0CuT 4.8CuT MUFFLER WITH FILTER M MOTOR OPERATED VALVE φ. 4.0×ID. 2.0CuT HEAT EXCHANGER THERMISTOR 4.8CuT 6.4CuT 6.4CuT MUFFLER WITH FILTER 9.5CuT PROPELLER FAN 9.5CuT FOUR WAY VALVE ON : HEATING 9.5CuT 7.9CuT 6.4CuT MUFFLER WITH FILTER LIQUID STOP VALVE MUFFLER FIELD PIPING (6.4CuT) 7.9CuT DISCHARGE PIPE THERMISTOR 9.5CuT 9.
SiBE06-708 Wiring Diagrams 2. Wiring Diagrams 2.1 Indoor Units FVXS25FV1B, FVXS35FV1B, FVXS50FV1B PCB3 S27 S2W(4) PCB2 S26 V1 F1U ~ ~ RECTIFIER H1 3.15A H2 S4W WIRELESS REMOTE CONTROLLER TRANSMISSION CIRCUIT PCB4 S1W S47 S46 LED2 H1P H2P E1 4 1 M1S M2S indoor M RED ORG YLW PNK BLU M RED ORG YLW PNK BLU S42 1 S21 GRN S1 E3 RED BLU BRN ORG WHT M HA S48 S49 t° 6 S41 1 PCB1 S32 5 t° R2T outdoor FIELD WIRING.
Wiring Diagrams 2.2 SiBE06-708 Outdoor Units RKS25F2V1B, RKS35F2V1B, RXS25F2V1B, RXS35F2V1B R12T t° BRN S RED HN2 WHT BLK BLK BLK BLK BLK BLK 1 GRN/YLW GRN/YLW GRY HN3 BLU IPM1 HC4 + DB2 ~ + ~ - C74 C94 + + - - HL3 V3 E ORG S11 SA1 L N HL2 MRM10 V2 HC3 HR2 DB1 ~ + 7 1 FU1 3.15A S10 7 1 IC11 6 C75 V1 + + - - C95 W V U PCB2 MRCW S20 FU2 3.
SiBE06-708 Wiring Diagrams RXS50F2V1B L1R L Z2C N BRN BLK TO INDOOR UNIT 1 2 3 X2M 1 2 3 WHT Z3C BLU AC1 E1 SA2 FU1 V2 30A GRN 1 1 9 8 V11 6(P) + + + 7(N) 2 S70 1 PM1 U V W 5 4 3 FU2 3.15A S10 7 3.
Wiring Diagrams 198 SiBE06-708 Appendix
SiBE06-708 Index Numerics 00 ............................................................................87 3 minutes stand-by............................................30, 38 control PCB ............................................................ 13 control PCB (outdoor unit)...................................... 15 CT or related abnormality..................................... 117 A D A1............................................................................88 A5................................
SiBE06-708 U2 ...................................................................133 U4 .....................................................................94 U7 ...................................................................135 UA.....................................................................96 error codes and description.....................................87 F F3 ..........................................................................108 F6 .................................................
SiBE06-708 power transistor check ..........................................143 POWERFUL operation......................................28, 48 preheating operation ...............................................35 pressure equalization control ..................................44 printed circuit board (PCB) control PCB ......................................................13 control PCB (outdoor unit) ................................15 display PCB ......................................................
SiBE06-708 iv Index
SiBE06-708 Drawings & Flow Charts A H ARC452A series .....................................................84 automatic air flow control .......................................23 automatic operation ................................................25 auto-swing ..............................................................22 heating peak-cut control ........................................ 40 high pressure control in cooling .......................... 110 C capacitor voltage check .......................
SiBE06-708 R radiation fin temperature rise ...............................123 remote controller ....................................................84 S sensor PCB ............................................................13 service monitor PCB ..............................................17 service PCB ...........................................................13 signal transmission error (between indoor and outdoor units) ..................................................
Specifications, designs and other content appearing in this brochure are current as of March 2007 but subject to change without notice.
