SiBE06-708_C Service Manual Inverter Pair Floor Standing Type F-Series [Applied Models] O Inverter Pair : Cooling Only O Inverter Pair : Heat Pump
SiBE06-708_C Inverter Pair Floor Standing Type F-Series zCooling Only Indoor Unit FVXS25FV1B FVXS35FV1B FVXS50FV1B Outdoor Unit RKS25F2V1B RKS35F2V1B RKS50F2V1B RKS25G2V1B RKS35G2V1B RKS50G2V1B RKS25G2V1B9 RKS35G2V1B9 zHeat Pump Indoor Unit FVXS25FV1B FVXS35FV1B FVXS50FV1B Outdoor Unit RXS25F2V1B RXS35F2V1B RXS50F2V1B i RXS25G2V1B RXS35G2V1B RXS50G2V1B RXS25G2V1B9 RXS35G2V1B9 RXS25J2V1B RXS35J2V1B RXS50J2V1B RXS25K2V1B RXS35K2V1B RXS50K2V1B RXS25K3V1B Table of Contents
SiBE06-708_C 1. Introduction .............................................................................................v 1.1 Safety Cautions ........................................................................................v 1.2 Used Icons .............................................................................................. ix Part 1 List of Functions ................................................................ 1 1. Functions...........................................................
SiBE06-708_C 3.9 3.10 3.11 3.12 Liquid Compression Protection Function................................................66 Defrost Control .......................................................................................67 Electronic Expansion Valve Control .......................................................68 Malfunctions ...........................................................................................71 Part 5 Remote Controller .........................................................
SiBE06-708_C 5.7 5.8 5.9 5.10 5.11 5.12 5.13 5.14 Inverter Analyzer Check .......................................................................130 Rotation Pulse Check on the Outdoor Unit PCB ..................................131 Installation Condition Check.................................................................133 Discharge Pressure Check...................................................................133 Outdoor Fan System Check .............................................................
Introduction SiBE06-708_C 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.
SiBE06-708_C Introduction Warning Be sure to wear a safety helmet, gloves, and a safety belt when working at a high place (more than 2 m). Insufficient safety measures may cause a fall accident. In case of R-410A refrigerant models, be sure to use pipes, flare nuts and tools for the exclusive use of the R-410A refrigerant. The use of materials for R-22 refrigerant models may cause a serious accident such as a damage of refrigerant cycle as well as an equipment failure.
Introduction SiBE06-708_C 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.
SiBE06-708_C Introduction 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.
Introduction SiBE06-708_C 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.
SiBE06-708_C Part 1 List of Functions 1. Functions.................................................................................................2 1.1 Cooling Only.............................................................................................2 1.2 Heat Pump ...............................................................................................
Functions SiBE06-708_C 1.
FVXS25/35FV1B RKS25/35G2V1B FVXS50FV1B RKS50G2V1B — — — Photocatalytic deodorizing filter — — z Air-purifying filter with photocatalytic deodorizing function — — Compressor z Titanium apatite photocatalytic air-purifying filter z z — — Air filter (prefilter) z z z z Wipe-clean flat panel z z Comfortable Airflow Power-airflow flap — — Washable grille — — Power-airflow dual flaps — — MOLD PROOF operation — — Power-airflow diffuser — — Wide-angle louvers z z Vertic
Category Basic Function Compressor Comfortable Airflow Comfort Control Operation Lifestyle Convenience Functions Inverter (with inverter power control) Operation limit for cooling (°CDB) Operation limit for heating (°CWB) PAM control Standby electricity saving — Health & Clean Functions Air-purifying filter — — Photocatalytic deodorizing filter — z Air-purifying filter with photocatalytic deodorizing function — Oval scroll compressor — Swing compressor z Titanium apatite photocatalyt
SiBE06-708_C Compressor Comfortable Airflow Comfort Control Operation Lifestyle Convenience z z Operation limit for cooling (°CDB) –10 ~46 –10 ~46 Operation limit for heating (°CWB) –15 ~18 –15 ~18 Inverter (with inverter power control) PAM control z z Standby electricity saving — — FVXS50FV1B RXS50F2V1B Basic Function Functions FVXS25/35FV1B RXS25/35F2V1B Category FVXS50FV1B RXS50F2V1B Heat Pump FVXS25/35FV1B RXS25/35F2V1B 1.
Compressor Comfortable Airflow Comfort Control Operation Lifestyle Convenience z z Operation limit for cooling (°CDB) –10 ~46 –10 ~46 Operation limit for heating (°CWB) –15 ~18 –15 ~18 Inverter (with inverter power control) PAM control z z Standby electricity saving — — Air-purifying filter — — Photocatalytic deodorizing filter — — Air-purifying filter with photocatalytic deodorizing function — — Category Health & Clean Functions Oval scroll compressor — — Swing compressor
Basic Function Compressor Comfortable Airflow Comfort Control Operation Lifestyle Convenience Functions Inverter (with inverter power control) z Operation limit for cooling (°CDB) –10 ~46 Operation limit for heating (°CWB) –15 ~18 PAM control z Standby electricity saving — Category Health & Clean Functions FVXS25/35FV1B RXS25/35G2V1B9 Category Functions FVXS25/35FV1B RXS25/35G2V1B9 SiBE06-708_C Air-purifying filter — Photocatalytic deodorizing filter — Air-purifying filter with
Compressor Comfortable Airflow Comfort Control Operation Lifestyle Convenience z z Operation limit for cooling (°CDB) –10 ~46 –10 ~46 Operation limit for heating (°CWB) –15 ~18 –15 ~18 PAM control z z Standby electricity saving — — Inverter (with inverter power control) Air-purifying filter — — Photocatalytic deodorizing filter — — Air-purifying filter with photocatalytic deodorizing function — — Category Health & Clean Functions Oval scroll compressor — — Swing compressor
Compressor Comfortable Airflow Comfort Control Operation Lifestyle Convenience FVXS50FV1B RXS50K2V1B Air-purifying filter — — Photocatalytic deodorizing filter — — Air-purifying filter with photocatalytic deodorizing function — — Category z z Operation limit for cooling (°CDB) –10 ~46 –10 ~46 Operation limit for heating (°CWB) –15 ~18 –15 ~18 Inverter (with inverter power control) FVXS25/35FV1B RXS25/35K2V1B, RXS25K3V1B Basic Function Functions Functions FVXS50FV1B RXS50K2V1B C
SiBE06-708_C Part 2 Specifications 1. Specifications ........................................................................................11 1.1 Cooling Only...........................................................................................11 1.2 Heat Pump .............................................................................................
SiBE06-708_C Specifications 1. Specifications 1.1 Cooling Only 50 Hz, 220 - 230 - 240 V Model Indoor Unit Outdoor Unit 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 SiBE06-708_C 50 Hz, 220 - 230 - 240 V Model Indoor Unit Outdoor Unit 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_C Specifications 50 Hz, 220 - 230 - 240 V Model Indoor Unit Outdoor Unit FVXS35FV1B RKS35G2V1B 3.5 (1.4 ~ 3.8) 11,900 (4,800 ~ 13,000) 3,010 (1,200 ~ 3,270) 1.9 4.9 - 4.7 - 4.5 W 570 (300 ~ 920) 1,020 (300 ~ 1,250) % W/W mm mm mm 74.0 - 75.1 - 74.2 4.39 φ 6.4 φ 9.5 φ 20.0 Both Liquid and Gas Pipes 20 15 10 94.6 - 94.4 - 94.4 3.43 φ 6.4 φ 9.5 φ 20.0 Both Liquid and Gas Pipes 20 15 10 kW Btu/h kcal/h L/h A Capacity Rated (Min. ~ Max.
Specifications SiBE06-708_C 50 Hz, 220 - 230 - 240 V Model Indoor Unit Outdoor Unit 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. Interunit Height Difference Chargeless Amount of Additional Charge of Refrigerant Indoor Unit Front Panel Color H Airflow Rate kW Btu/h kcal/h L/h A FVXS50FV1B RKS50G2V1B 5.0 (1.4 ~ 5.
SiBE06-708_C Specifications 50 Hz, 220 - 230 - 240 V Model Indoor Unit Outdoor Unit 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_C Heat Pump 50 Hz, 220 - 230 - 240 V Indoor Unit Model FVXS25FV1B RXS25F2V1B Outdoor Unit 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_C Specifications 50 Hz, 220 - 230 - 240 V Indoor Unit Model FVXS50FV1B RXS50F2V1B Outdoor Unit 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 SiBE06-708_C 50 Hz, 220 - 230 - 240 V Indoor Unit Model FVXS25FV1B RXS25G2V1B Outdoor Unit 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_C Specifications 50 Hz, 220 - 230 - 240 V Indoor Unit Model FVXS50FV1B RXS50G2V1B Outdoor Unit 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 SiBE06-708_C 50 Hz, 220 - 230 - 240 V Indoor Unit Model FVXS25FV1B RXS25G2V1B9 Outdoor Unit 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_C Specifications 50 Hz, 220 - 230 - 240 V Indoor Unit Model FVXS25FV1B RXS25J2V1B Outdoor Unit 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 SiBE06-708_C 50 Hz, 220 - 230 - 240 V Indoor Unit Model FVXS50FV1B RXS50J2V1B Outdoor Unit 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_C Specifications 50 Hz, 220 - 230 - 240 V Indoor Unit Model FVXS25FV1B RXS25K2V1B Outdoor Unit 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.
Specifications SiBE06-708_C 50 Hz, 220 - 230 - 240 V Indoor Unit Model FVXS35FV1B RXS35K2V1B Outdoor Unit 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_C Part 3 Printed Circuit Board Connector Wiring Diagram 1. Indoor Unit.............................................................................................26 2. Outdoor Unit..........................................................................................28 2.1 RK(X)S25/35F2V1B ...............................................................................28 2.2 RK(X)S25/35G2V1B...............................................................................30 2.
Indoor Unit SiBE06-708_C 1.
SiBE06-708_C Indoor Unit Sensor PCB 1) S49 2) RTH2 (R1T) Connector for control PCB Room temperature thermistor RTH2 S49 3P191450-1 Service PCB 1) S27 2) SW2-4 3) SW4 (S4W) Connector for control PCB Switch for upward airflow limit setting ∗ Refer to page 149 for detail. Switch for airflow selection ∗ Refer to page 41 for detail.
Outdoor Unit SiBE06-708_C 2. Outdoor Unit 2.
SiBE06-708_C Outdoor Unit Filter PCB 1) 2) 3) 4) S11 HL1, HN1, S E HC1, HC2 HL2, HN2 5) HR1 6) FU3 7) V2, V3 Connector for main PCB Connector for terminal board Terminal for earth Connector for main PCB Connector for reactor Fuse (20 A, 250 V) Varistor HC2 HR1 E HL1 HN1 S HN2 S11 HC1 HL2 V3 V2 FU3 3P143310-1 Printed Circuit Board Connector Wiring Diagram 29
Outdoor Unit 2.
SiBE06-708_C Outdoor Unit Filter PCB 1) 2) 3) 4) 5) 6) 7) 8) S11 HL1, HN1, S E1 E2 HL2, HN2 HR1 FU3 V2, V3 Connector for main PCB Connector for terminal board Terminal for earth Connector for terminal board (earth) Connector for main PCB Connector for reactor Fuse (20 A, 250 V) Varistor E1 E2 HR1 HL1 HN1 S V3 V2 HN2 FU3 S11 HL2 S50 (on main PCB) Printed Circuit Board Connector Wiring Diagram 3P203203-1 31
Outdoor Unit 2.
SiBE06-708_C Outdoor Unit Filter PCB 1) 2) 3) 4) 5) 6) 7) 8) S11 AC1, AC2, S E1, E2 HL2, HN2 HR1 FU1 FU3 V2, V3 Connector for main PCB Connector for terminal board Terminal for earth wire Connector for main PCB Connector for reactor Fuse (3.15 A, 250 V) Fuse (20 A, 250 V) Varistor HR1 E1, E2 HN2 V2 AC2 AC1 V3 S11 FU3 S FU1 HL2 S50 (on main PCB) Forced Operation Button PCB 1) S110 2) SW1 3P254234-1 Connector for main PCB Forced cooling operation ON/OFF switch ∗ Refer to page 142 for detail.
Outdoor Unit 2.
SiBE06-708_C Service Monitor PCB Outdoor Unit 1) S52, S102 2) LED A 3) SW1 4) SW4-B SW4-C Connector for main PCB LED for service monitor (green) Forced cooling operation ON/OFF switch ∗ Refer to page 142 for detail. Switch for facility setting ∗ Refer to page 146 for detail Switch for improvement of defrost performance ∗ Refer to page 149 for detail. LED A SW1 SW4-B SW4-C S52 S102 3P169059-1 SW4-A has no function. Keep it OFF.
Outdoor Unit 2.5 SiBE06-708_C RXS50K2V1B Main PCB 1) 2) 3) 4) 5) 6) 7) 8) S10 S12 S20 S40 S50 S70 S80 S90 Connector for [S11] on filter PCB Connector for [HL4] [HN4] on filter PCB Connector for electronic expansion valve coil Connector for overload protector Connector for magnetic relay Connector for fan motor Connector for four way valve coil Connector for thermistors (outdoor temperature, outdoor heat exchanger, discharge pipe) Connector for [HL2] [HN2] on filter PCB Terminal for compressor Fuse (3.
SiBE06-708_C Outdoor Unit Filter PCB 1) 2) 3) 4) 5) 6) 7) 8) 9) S11 HL1, HN1, S E1, E2 HL2, HN2 HL4, HN4 FU1 FU3 V2, V3 SW1 Connector for [S10] on main PCB Connector for terminal board Terminal for earth wire Connector for [HL3] [HN3] on main PCB Connector for [S12] on main PCB Fuse (3.15 A, 250 V) Fuse (30 A, 250 V) Varistor Forced cooling operation ON/OFF switch ∗ Refer to page 142 for detail.
SiBE06-708_C Part 4 Function and Control 1. Main Functions......................................................................................39 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 Temperature Control ..............................................................................39 Frequency Principle................................................................................39 Airflow Direction Control.........................................................................
SiBE06-708_C Main Functions 1. Main Functions 1.1 Temperature Control Definitions of Temperatures The definitions of temperatures are classified as following.
Main Functions Drawing of Inverter SiBE06-708_C The following drawing shows a schematic view of the inverter principle: Refrigerant circulation rate (high) AC power Amount of heat exchanged air (small) DC power high speed Amount of heat exchanged air (large) high f low f low speed 50 Hz freq= constant 60 Hz freq=variable Amount of heat exchanged air (large) Amount of heat exchanged air (small) capacity= variable Refrigerant circulation rate (low) Inverter Features (R2812) The inverter provid
SiBE06-708_C 1.3 Main Functions Airflow Direction Control Wide-Angle Louvers The louvers, made of elastic synthetic resin, provide a wide range of airflow that guarantees a comfortable air distribution.
Main Functions SiBE06-708_C When setting the airflow selection switch to . The air conditioner automatically decides the appropriate blowing pattern depending on the operating mode / situation. Operating mode Cooling operation Situation Blowing pattern • When the room has become fully • Air is blown from the upper air cool, or when 1 hour has passed outlet, so that air does not come into direct contact with people, since turning on the air and room temperature is conditioner. equalized.
SiBE06-708_C 1.4 Main Functions Fan Speed Control for Indoor Unit Outline Phase control and fan speed control contains 9 steps: LLL, LL, SL, L, ML, M, MH, H, and HH. The airflow rate can be automatically controlled depending on the difference between the room thermistor temperature and the target 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 85.
Main Functions 1.5 SiBE06-708_C Program Dry Operation Outline Program dry operation removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and airflow rate, the temperature adjustment and [FAN] setting buttons are inoperable. Detail The microcomputer automatically sets the temperature and airflow rate. The difference between the room thermistor temperature at start-up and the target temperature is divided into two zones.
SiBE06-708_C 1.6 Main Functions Automatic Operation Outline Detail Automatic Cooling / Heating Function When the automatic operation is selected with the remote controller, the microcomputer automatically determines the operation mode as cooling or heating according to the room temperature and the set temperature at start-up. The unit automatically switches the operation mode to maintain the room temperature at the set temperature.
Main Functions 1.7 SiBE06-708_C Thermostat Control Outline Thermostat control is based on the difference between the room thermistor temperature and the target temperature. Detail Thermostat OFF Condition The temperature difference is in the zone A. Thermostat ON Condition The temperature difference returns to 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_C 1.8 Main Functions NIGHT SET Mode Outline When the OFF TIMER is set, the NIGHT SET Mode is automatically activated. The NIGHT SET Mode keeps the airflow rate setting. Detail The NIGHT SET Mode continues operation at the target temperature for the first one hour, then automatically raises the target temperature slightly in the case of cooling, or lowers it slightly in the case of heating.
Main Functions 1.9 SiBE06-708_C ECONO Operation Outline ECONO operation reduces the maximum operating current and the power consumption. This operation is particularly convenient for energy-saving-oriented users. It is also a major bonus for those whose breaker capacities do not allow the use of multiple electrical devices and air conditioners. It is easily activated from the wireless remote controller by pushing the [ECONO] button.
SiBE06-708_C Main Functions 1.10 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. Detail When the [POWERFUL] button is pressed, the fan speed and target temperature are converted to the following states for 20 minutes. Operation mode Fan speed Target temperature COOL DRY H tap + A rpm Dry rotating speed + A rpm 18°C Lowered by 2.
Main Functions SiBE06-708_C 1.11 Clock Setting ARC452 Series The clock can be set by taking the following steps: 1. Press the [CLOCK] button. → is displayed and MON and blink. 2. Press the [SELECT] or button to set the clock to the current day of the week. 3. Press the [CLOCK] button. → blinks. 4. Press the [SELECT] or button to set the clock to the present time. Holding down the [SELECT] or button increases or decreases the time display rapidly. 5. Press the [CLOCK] button.
SiBE06-708_C Main Functions 1.12 WEEKLY TIMER Operation Outline Up to 4 timer settings can be saved for each day of the week (up to 28 settings in total). The 3 items: “ON/OFF”, “temperature”, and “time” can be set. Detail Using in these cases of WEEKLY TIMER An example of WEEKLY TIMER settings is shown below. Example: The same timer settings are made for the week from Monday through Friday while different timer settings are made for the weekend. [Monday] Make timer settings up to programs 1-4.
Main Functions SiBE06-708_C To use WEEKLY TIMER operation Setting mode • Make sure the day of the week and time are set. If not, set the day of the week and time. Program 1 Program 2 Program 3 ON [Monday] OFF OFF 25°C 6:00 Program 4 ON 27°C 8:30 1. Press “ 17:30 22:00 button”. • The day of the week and the reservation number of the current day will be displayed. • 1 to 4 settings can be made per day. 2.
SiBE06-708_C Main Functions 8. Press “SELECT button” to select the desired temperature. • The temperature can be set between 10°C and 32°C. Cooling: The unit operates at 18°C even if it is set at 10 to 17°C. Heating: The unit operates at 30°C even if it is set at 31 to 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 and go to the next reservation setting.
Main Functions SiBE06-708_C WEEKLY TIMER Operation Copy mode • A reservation made once can be copied another day of the week. The whole reservation of the selected day of the week will be copied. Program 1 Program 2 Program 3 ON [Monday] OFF ON 8:30 17:30 25°C 6:00 Program 4 OFF 27°C 22:00 COPY Program 4 Program 1 Program 2 Program 3 OFF ON OFF [Tuesday] ON 25°C 27°C to [Friday] 6:00 8:30 17:30 22:00 1. Press “ button”. 2. Press “SELECT button” to confirm the day of the week to be copied. 3.
SiBE06-708_C Main Functions 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. • To change the confirmed reserved settings, select the reservation number and press “NEXT button”. The mode is switched to setting mode.
Main Functions SiBE06-708_C 1.13 Other Functions 1.13.1 Hot-Start Function In order to prevent the cold air blast that normally comes when heating operation is started, the temperature of the indoor heat exchanger is detected, and the airflow is either stopped or made very weak thereby carrying out comfortable heating of the room. *The cold air blast is also prevented using similar control when the defrost control starts or when the thermostat is turned ON. 1.13.
SiBE06-708_C Function of Thermistor 2. Function of Thermistor Electronic expansion valve (1) (3) Four way valve (2) Compressor (R14247) (1) Outdoor Heat Exchanger Thermistor 1. The outdoor heat exchanger thermistor is used for controlling the target discharge pipe temperature.
Control Specification SiBE06-708_C 3. Control Specification 3.1 Mode Hierarchy Outline Air conditioner control has normal operation mode, forced operation mode, and power transistor test mode for installation and servicing.
SiBE06-708_C 3.2 Control Specification Frequency Control Outline Frequency is determined according to the difference between the room thermistor temperature and the target temperature. The function is explained as follows. 1. How to determine frequency 2. Frequency command from the indoor unit (Difference between the room thermistor temperature and the target temperature) 3. Frequency initial setting 4.
Control Specification SiBE06-708_C 2. Determine upper limit frequency The minimum value is set as an upper limit frequency among the frequency upper limits of the following functions: Compressor protection, input current, discharge pipe temperature, heating peak-cut, freezeup protection, defrost. 3.
SiBE06-708_C 3.3 Control Specification Controls at Mode Changing / Start-up 3.3.1 Preheating Control Outline The inverter operation in open phase starts with the conditions of the preheating command from the indoor unit, the outdoor temperature, and the discharge pipe temperature. Detail RK(X)S25/35F2V1B, RK(X)S25/35G2V1B ON Condition When the discharge pipe temperature is below 10°C, the inverter operation in open phase starts.
Control Specification SiBE06-708_C 3.3.3 Four Way Valve Operation Compensation Outline At the beginning of the operation as the four way valve is switched, the pressure difference to activate the four way valve is acquired by having output frequency which is more than a certain fixed frequency, for a certain fixed time. Detail Starting Conditions 1. When the compressor starts and the four way valve switches from OFF to ON 2. When the four way valve switches from ON to OFF during operation 3.
SiBE06-708_C 3.4 Control Specification Discharge Pipe Temperature Control Outline The discharge pipe temperature is used as the internal temperature of the compressor. If the discharge pipe temperature rises above a certain level, the upper limit of frequency is set to keep the discharge pipe temperature from rising further.
Control Specification 3.5 Outline SiBE06-708_C Input Current Control The microcomputer calculates the input current while the compressor is running, and sets the frequency upper limit from the input current. In case of heat pump models, this control which is the upper limit control of the frequency takes priority over the lower limit of control of four way valve operation compensation.
SiBE06-708_C 3.6 Control Specification Freeze-up Protection Control Outline During cooling operation, the signal sent from the indoor unit controls the operating frequency limitation and prevents freezing of the indoor heat exchanger. (The signal from the indoor unit is divided into zones.) Detail The operating frequency limitation is judged with the indoor heat exchanger temperature.
Control Specification 3.8 SiBE06-708_C Outdoor Fan Control 1. Fan ON control to cool down the electrical box The outdoor fan is turned ON when the electrical box temperature is high while the compressor is OFF. 2. Fan OFF control during defrosting The outdoor fan is turned OFF during defrosting. 3. Fan OFF delay when stopped The outdoor fan is turned OFF 60 seconds after the compressor stops. 4.
SiBE06-708_C Control Specification 3.10 Defrost Control Outline Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor heat exchanger temperature must be more than a certain value to finish. Detail Conditions for Starting Defrost The starting conditions are determined with the outdoor temperature and the outdoor heat exchanger temperature. The system is in heating operation. The compressor operates for 6 minutes.
Control Specification SiBE06-708_C 3.11 Electronic Expansion Valve Control During target discharge pipe temperature control When the frequency changes under target discharge pipe temperature control When the disconnection of the discharge pipe thermistor is ascertained When the frequency changes under the control for disconnection of the discharge pipe thermistor Under defrost control The followings are the examples of electronic expansion valve control which function in each operation mode.
SiBE06-708_C Control Specification 3.11.1 Fully Closing with Power ON The electronic expansion valve is initialized when turning on the power. The opening position is set and the pressure equalization is developed. 3.11.2 Pressure Equalizing Control When the compressor is stopped, the pressure equalizing control is activated. The electronic expansion valve opens, and develops the pressure equalization. 3.11.
Control Specification SiBE06-708_C 3.11.7 Control for Disconnection of the Discharge Pipe Thermistor Outline The disconnection of the discharge pipe thermistor is detected by comparing the discharge pipe temperature with the condensation temperature. If the discharge pipe thermistor is disconnected, the electronic expansion valve opens according to the outdoor temperature and the operation frequency, operates for a specified time, and then stops.
SiBE06-708_C Control Specification 3.12 Malfunctions 3.12.1 Sensor Malfunction Detection Sensor malfunction may occur in the thermistor. Relating to Thermistor Malfunction 1. Outdoor heat exchanger thermistor 2. Discharge pipe thermistor 3. Radiation fin thermistor 4. Outdoor temperature thermistor 3.12.2 Detection of Overcurrent and Overload Outline An excessive output current is detected and the OL temperature is observed to protect the compressor.
SiBE06-708_C Part 5 Remote Controller 1. FVXS25/35/50FV1B..............................................................................
SiBE06-708_C FVXS25/35/50FV1B 1. FVXS25/35/50FV1B Signal transmitter Receiver Display (LCD) • Displays the current settings. (In this illustration, each section is shown with all its displays on for the purpose of explanation.) • 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. • The maximum distance for communication is approx. 7m.
FVXS25/35/50FV1B SiBE06-708_C Open the Front Cover MODE button • Selects the operation mode. (heat hump only) (heat hump only) ECONO3 button • ECONO operation. QUIET button SWING4 button • OUTDOOR UNIT QUIET operation. • Adjusts the airflow direction. • When you press the SWING button, the flap moves up and down. The flap stops when you press the SWING button again. • QUIET operation is not available in FAN and DRY operation.
SiBE06-708_C Part 6 Service Diagnosis 1. Troubleshooting with LED .....................................................................77 1.1 Indoor Unit..............................................................................................77 1.2 Outdoor Unit ...........................................................................................77 2. Problem Symptoms and Measures .......................................................78 3. Service Check Function ................................
SiBE06-708_C 5.11 5.12 5.13 5.14 76 Outdoor Fan System Check .................................................................134 Main Circuit Short Check......................................................................134 Capacitor Voltage Check......................................................................136 Power Module Check ...........................................................................
SiBE06-708_C Troubleshooting with LED 1. Troubleshooting with LED 1.1 Indoor Unit Operation Lamp The operation lamp blinks 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. 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. Operation lamp (green) (R12426) Service Monitor 1.
Problem Symptoms and Measures SiBE06-708_C 2. Problem Symptoms and Measures Symptom Check Item The unit does not operate. Check the power supply. Check the type of the indoor unit. Check the outdoor temperature. Diagnose with remote controller indication. Operation sometimes stops. Details of Measure Reference Page Check if the rated voltage is supplied. Check if the indoor unit type is compatible with the outdoor unit.
SiBE06-708_C Service Check Function 3. Service Check Function Check Method 1 1. When the timer cancel button is held down for 5 seconds, 00 is displayed on the temperature display screen. Timer cancel button < ARC452 Series > (R14554) 2. Press the timer cancel button repeatedly until a long beep sounds. The code indication changes in the sequence shown below. Note: Service Diagnosis No. 1 Code 00 No. 13 Code C7 No.
Service Check Function SiBE06-708_C Check Method 2 1. Press the 3 buttons (TEMP , TEMP , MODE) at the same time to enter the diagnosis mode. (R8381) The left-side number blinks. (R8382) 2. Press the [TEMP] or beeps or the long beep. button and change the number until you hear the two consecutive (R8383) 3. Diagnose by the sound. beep : The left-side number does not correspond with the error code.
SiBE06-708_C Service Check Function 5. Press the [TEMP] or button and change the number until you hear the long beep. (R8383) 6. Diagnose by the sound. beep : The left-side number does not correspond with the error code. two consecutive beeps : The left-side number corresponds with the error code but the right-side number does not. long beep : Both the left-side and right-side number corresponds with the error code. 7. Determine the error code.
Troubleshooting SiBE06-708_C 4. Troubleshooting 4.
SiBE06-708_C 4.2 Troubleshooting Indoor Unit PCB Abnormality A1 Error Code Method of Error Detection The system checks if the circuit works properly within the microcomputer of the indoor unit. Error Decision Conditions The system cannot set the internal settings.
Troubleshooting 4.3 SiBE06-708_C Freeze-up Protection Control or Heating Peak-cut Control Error Code A5 Method of Error Detection Freeze-up protection control Error Decision Conditions Freeze-up protection control During cooling operation, the freeze-up protection control (operation halt) is activated according to the temperature detected by the indoor heat exchanger thermistor.
SiBE06-708_C 4.4 Troubleshooting Fan Motor (DC Motor) or Related Abnormality Error Code A6 Method of Error Detection The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Error Decision Conditions 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_C Troubleshooting Caution Check No.02 Refer to P.127 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn off the power supply and rotate the fan by hand. Does the fan rotate smoothly? NO Replace the indoor fan motor. YES Turn the power on and start operation. Does the fan rotate? Turn off the power supply NO and disconnect the fan motor connector, then turn the power on.
SiBE06-708_C 4.5 Troubleshooting Thermistor or Related Abnormality (Indoor Unit) Error Code C4, C9 Method of Error Detection The temperatures detected by the thermistors determine thermistor errors. Error Decision Conditions The thermistor input is more than 4.96 V or less than 0.04 V during compressor operation. Supposed Causes Disconnection of connector Defective thermistor corresponding to the error code Defective indoor unit PCB Troubleshooting Caution Check No.01 Refer to P.
Troubleshooting 4.6 SiBE06-708_C Refrigerant Shortage Error Code Method of Error Detection U0 Refrigerant shortage detection I: Refrigerant shortage is detected by checking the input current value and the compressor running frequency. If the refrigerant is short, the input current is lower than the normal value. Refrigerant shortage detection II: Refrigerant shortage is detected by checking the discharge pipe temperature and the opening of the electronic expansion valve.
SiBE06-708_C Troubleshooting Refrigerant shortage detection III: (25/35 class only) When the difference of the temperature is smaller than G°C, it is regarded as refrigerant shortage. Operation mode Description G (°C) Cooling room thermistor temperature – indoor heat exchanger temperature outdoor heat exchanger temperature – outdoor temperature 4.0 4.0 Heating indoor heat exchanger temperature – room thermistor temperature outdoor temperature – outdoor heat exchanger temperature 3.0 3.
Troubleshooting SiBE06-708_C Troubleshooting Caution Check No.01 Refer to P.126 Check No.12 Refer to P.128 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Any thermistor disconnected? NO Stop valve closed? YES ∗ Discharge pipe thermistor ∗ Indoor or outdoor heat exchanger thermistor ∗ Room temperature thermistor ∗ Outdoor temperature thermistor YES Replace the thermistor(s) in position. Open the stop valve.
SiBE06-708_C 4.7 Troubleshooting Low-voltage Detection or Over-voltage Detection Error Code U2 Method of Error Detection Low-voltage detection: An abnormal voltage drop is detected by the DC voltage detection circuit. Over-voltage detection: An abnormal voltage rise is detected by the over-voltage detection circuit. Error Decision Conditions Low-voltage detection: The voltage detected by the DC voltage detection circuit is below 150 ~ 180 V (depending on the model).
Troubleshooting SiBE06-708_C Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Is the power supply voltage as rated? NO Correct the power supply. YES Is the compressor harness loose or disconnected? YES Reconnect the compressor harness. NO Rotate the outdoor fan by hand. Does the outdoor fan rotate smoothly? NO Replace both the fan motor and the outdoor unit PCB.
SiBE06-708_C 4.8 Troubleshooting Signal Transmission Error (between Indoor Unit and Outdoor Unit) Error Code U4 Method of Error Detection The data received from the outdoor unit in signal transmission is checked whether it is normal. Error Decision Conditions The data sent from the outdoor unit cannot be received normally, or the content of the data is abnormal.
Troubleshooting SiBE06-708_C Troubleshooting Check No.11 Refer to P.127 Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check the power supply voltage. Voltage as rated? NO Correct the power supply. YES 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 voltage of the connection wires on the indoor terminal board between No.
SiBE06-708_C 4.9 Troubleshooting Signal Transmission Error on Outdoor Unit PCB (RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B Only) Error Code U7 Method of Error Detection Communication error between microcomputer mounted on the main microcomputer and PM1. Error Decision Conditions The abnormality is determined when the data sent from the PM1 can not be received for 9 seconds. The error counter is reset when the data from the PM1 can be successfully received.
Troubleshooting SiBE06-708_C 4.10 Unspecified Voltage (between Indoor Unit and Outdoor Unit) Error Code UA Method of Error Detection The supply power is detected for its requirements (different from pair type and multi type) by the indoor / outdoor transmission signal. Error Decision Conditions The pair type and multi type are interconnected.
SiBE06-708_C Troubleshooting 4.11 Outdoor Unit PCB Abnormality Error Code E1 Method of Error Detection The system checks if the microprocessor is working in order. The system checks if the zero-cross signal comes in properly. Error Decision Conditions The microprocessor program runs out of control. The zero-cross signal is not detected.
Troubleshooting Troubleshooting SiBE06-708_C RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn on the power again. Error again? YES Replace the outdoor unit PCB. NO Check to see if the unit is grounded. Grounded? YES NO Ground the system. The cause can be external factors other than malfunction. Investigate the cause of noise.
SiBE06-708_C Troubleshooting 4.12 OL Activation (Compressor Overload) Error Code E5 Method of Error Detection A compressor overload is detected through compressor OL. Error Decision Conditions If the error repeats, the system is shut down.
Troubleshooting SiBE06-708_C Troubleshooting Caution Check No.01 Refer to P.126 Check No.12 Refer to P.128 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Discharge pipe thermistor disconnected? NG ∗ Discharge pipe thermistor Replace the discharge pipe thermistor. OK Connectors are properly connected? Check No.14 Refer to P.129 Insert the thermistor in position. NO Check No. 01 Check the thermistors. Check No.13 Refer to P.
SiBE06-708_C Troubleshooting 4.13 Compressor Lock Error Code E6 Method of Error Detection A compressor lock is detected by checking the compressor running condition through the position detection circuit. Error Decision Conditions 25/35 class Operation stops due to overcurrent. If the error repeats, the system is shut down.
Troubleshooting SiBE06-708_C 4.14 DC Fan Lock Error Code E7 Method of Error Detection An error is determined with the high-voltage fan motor rotation speed detected by the Hall IC. Error Decision Conditions The fan does not start in about 15 ~ 60 seconds even when the fan motor is running. If the error repeats, the system is shut down.
SiBE06-708_C Troubleshooting 4.15 Input Overcurrent Detection Error Code E8 Method of Error Detection An input overcurrent is detected by checking the input current value with the compressor running. Error Decision Conditions The current exceeds about 9.25 ~ 20 A (depending on the model) for 2.5 seconds with the compressor running. (The upper limit of the current decreases when the outdoor temperature exceeds a certain level.
Troubleshooting SiBE06-708_C 4.16 Four Way Valve Abnormality Error Code EA Method of Error Detection The room temperature thermistor and the indoor heat exchanger thermistor are checked if they function within their normal ranges in each operation mode. Error Decision Conditions A following condition continues over 1 ~ 10 minutes (depending on the model) after operating for 5 ~ 10 minutes (depending on the model). Cooling / Dry (room thermistor temp. – indoor heat exchanger temp.
SiBE06-708_C Troubleshooting Troubleshooting Caution Check No.01 Refer to P.126 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Four way valve coil disconnected (loose)? YES Correct the four way valve coil. NO Check No.13 Refer to P.129 Harness out of connector? YES Reconnect the harness. NO Check No.14 Refer to P.129 Check the continuity of the four way valve coil and harness. Disconnect the harness from the connector.
Troubleshooting SiBE06-708_C 4.17 Discharge Pipe Temperature Control Error Code F3 Method of Error Detection An error is determined with the temperature detected by the discharge pipe thermistor. Error Decision Conditions If the temperature detected by the discharge pipe thermistor rises above A°C, the compressor stops. The error is cleared when the discharge pipe temperature has dropped below B°C.
SiBE06-708_C Troubleshooting 4.18 High Pressure Control in Cooling Error Code F6 Method of Error Detection High-pressure control (operation halt, frequency drop, etc.) is activated in cooling operation if the temperature sensed by the outdoor heat exchanger thermistor exceeds the limit. Error Decision Conditions The temperature sensed by the outdoor heat exchanger thermistor rises above about 60 ~ 65°C. The error is cleared when the temperature drops below about 50 ~ 55°C.
Troubleshooting SiBE06-708_C 4.19 Compressor System Sensor Abnormality 4.19.1 25/35 Class, RXS50K2V1B Error Code H0 Method of Error Detection The system checks the DC current before the compressor starts. Error Decision Conditions The DC current before compressor start-up is out of the range 0.5 ~ 4.5 V (sensor output converted to voltage value) The DC voltage before compressor start-up is below 50 V.
SiBE06-708_C Troubleshooting 4.19.2 RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B Error Code Method of Error Detection H0 The system checks the power supply voltage and the DC voltage before the compressor starts. The system checks the compressor current right after the compressor starts. Error Decision Conditions The power supply voltage and the DC voltage is obviously low or high. The compressor current does not run when the compressor starts.
Troubleshooting SiBE06-708_C 4.20 Position Sensor Abnormality Error Code H6 Method of Error Detection A compressor start-up failure is detected by checking the compressor running condition through the position detection circuit. Error Decision Conditions If the error repeats, the system is shut down.
SiBE06-708_C Troubleshooting Check No.15 Refer to P.130 Check No.18 Refer to P.133 Check No.20 Refer to P.134 Troubleshooting 25/35 Class, RXS50K2V1B Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn off the power. Check the power supply voltage. Voltage as rated? NO Correct the power supply. YES Check No. 18 Check the discharge pressure. OK? NO Replace the stop valve. YES Check No.
Troubleshooting Troubleshooting Check No.15 Refer to P.130 Check No.18 Refer to P.133 SiBE06-708_C RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn off the power. Check the power supply voltage. Voltage as rated? NO Correct the power supply. YES Check No. 18 Check the discharge pressure. OK? NO Replace the stop valve. YES Check the connection.
SiBE06-708_C Troubleshooting 4.21 DC Voltage / Current Sensor Abnormality (25/35 Class Only) Error Code H8 Method of Error Detection DC voltage or DC current sensor abnormality is identified based on the compressor running frequency and the input current. Error Decision Conditions If the error repeats, the system is shut down.
Troubleshooting SiBE06-708_C 4.22 CT or Related Abnormality (RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B Only) Error Code H8 Method of Error Detection A CT or related error is detected by checking the compressor running frequency and CTdetected input current. Error Decision Conditions The compressor running frequency is more than A Hz, and the CT input current is less than B A. A (Hz) 55 B (A) 0.5 If the error repeats, the system is shut down.
SiBE06-708_C Troubleshooting Troubleshooting Caution Check No.15 Refer to P.130 Check No.21 Refer to P.136 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn off the power and turn it on again. Start operation. ∗ Running current as shown at right with relay cable 1 or 2? YES Current (guideline) Replace the outdoor unit PCB.
Troubleshooting SiBE06-708_C 4.23 Thermistor or Related Abnormality (Outdoor Unit) Error Code H9, J3, J6, P4 Method of Error Detection This fault is identified based on the thermistor input voltage to the microcomputer. A thermistor fault is identified based on the temperature sensed by each thermistor. Error Decision Conditions The thermistor input voltage is above 4.96 V or below 0.04 V with the power on.
SiBE06-708_C Troubleshooting Troubleshooting In case of RK(X)S25/35F2V1B In case of “H9” “J3” “J6” for RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B, 50 class Check No.01 Refer to P.126 Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn on the power again. Error displayed again on remote controller? NO Reconnect the connectors or thermistors. YES Check No.
Troubleshooting SiBE06-708_C 4.24 Electrical Box Temperature Rise Error Code L3 Method of Error Detection An electrical box temperature rise is detected by checking the radiation fin thermistor with the compressor off. Error Decision Conditions With the compressor off, the radiation fin temperature is above A°C. The error is cleared when the radiation fin temperature drops below B°C.
SiBE06-708_C Troubleshooting Check No.01 Refer to P.126 Troubleshooting RK(X)S25/35F2V1B Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. WARNING Turn off the power and turn it on again. To cool the electrical components, the outdoor fan starts when the radiation fin temperature rises above C˚C and stops when it drops below B˚C. Check No.17 Refer to P.133 YES Error again or outdoor fan activated? Check No.19 Refer to P.
Troubleshooting Troubleshooting SiBE06-708_C RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B, 50 class Caution Check No.17 Refer to P.133 Check No.19 Refer to P.134 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. WARNING To cool the electrical components, the outdoor fan starts when the radiation fin temperature rises above C ˚C and stops when it drops below B ˚C. Turn off the power and turn it on again.
SiBE06-708_C Troubleshooting 4.25 Radiation Fin Temperature Rise Error Code L4 Method of Error Detection A radiation fin temperature rise is detected by checking the radiation fin thermistor with the compressor on. Error Decision Conditions Supposed Causes Service Diagnosis If the radiation fin temperature with the compressor on is above A°C. The error is cleared when the radiation fin temperature drops below B°C. If the error repeats, the system is shut down.
Troubleshooting Troubleshooting SiBE06-708_C RK(X)S25/35F2V1B Caution Check No.01 Refer to P.126 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn off the power and turn it on again to start the system. Check No.17 Refer to P.133 Error displayed again? Check No.19 Refer to P.134 YES Has the PCB been replaced? NO YES NO Check if the silicon grease applied properly on the radiation fin. If not, apply the silicon grease.
SiBE06-708_C Troubleshooting Troubleshooting RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B, 50 class Caution Check No.17 Refer to P.133 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn off the power and turn it on again to start the system. Check No.19 Refer to P.134 Error displayed again? YES Has the PCB been replaced? NO YES NO Check if silicon grease is applied properly on the radiation fin.
Troubleshooting SiBE06-708_C 4.26 Output Overcurrent Detection Error Code L5 Method of Error Detection An output overcurrent is detected by checking the current that flows in the inverter DC section. Error Decision Conditions A position signal error occurs while the compressor is running. A rotation speed error occurs while the compressor is running. An output overcurrent signal is fed from the output overcurrent detection circuit to the microcomputer.
SiBE06-708_C Troubleshooting Troubleshooting Caution Check No.15 Refer to P.130 Check No.17 Refer to P.133 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. ∗ An output overcurrent may result from wrong internal wiring. If the system is interrupted by an output overcurrent after the wires have been disconnected and reconnected for part replacement, check the wiring again. Check No. 17 Check the installation condition.
Check SiBE06-708_C 5. Check 5.1 Thermistor Resistance Check Check No.01 Disconnect the connectors of the thermistors from the PCB, and measure the resistance of each thermistor using tester. The data is for reference purpose only. Thermistor temperature (°C) –20 Resistance (kΩ) 197.8 –15 –10 148.2 112.1 –5 0 85.60 65.93 5 10 51.14 39.99 15 20 31.52 25.02 25 30 20.00 16.10 35 40 13.04 10.62 45 50 8.707 7.
SiBE06-708_C 5.2 Check Fan Motor Connector Output Check Check No.02 1. 2. 3. 4. 5. Check the connection of connector. Check the motor power supply voltage output (pins 4 - 7). Check the motor control voltage (pins 4 - 3). Check the rotation command voltage (pins 4 - 2). Check the rotation pulse (pins 4 - 1). S1 7 6 5 4 3 2 1 Motor power supply voltage (310 ~ 340 VDC) Unused Unused GND Motor control voltage (15 VDC) Rotation command voltage (1~ 5 VDC) Rotation pulse input (R12404) 5.
Check 5.4 SiBE06-708_C Electronic Expansion Valve Check Check No.12 Conduct the followings to check the electronic expansion valve (EV). 1. Check to see if the EV connector is correctly connected to the PCB. 2. Turn the power off and on again, and check to see if the EV generates a latching sound. 3. If the EV does not generate a latching sound in the above step 2, disconnect the connector and check the continuity using a tester. 4.
SiBE06-708_C 5.5 Check Four Way Valve Performance Check Check No.13 Turn the power off and then on again. Start heating operation. S80 voltage at 220 - 240 VAC 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 1000 ~ 2000 Ω? NO Replace the four way valve coil. YES Replace the four way valve.
Check 5.7 SiBE06-708_C Inverter Analyzer Check Check No.15 Characteristics Inverter analyzer: RSUK0917C If an abnormal stop occurs due to compressor startup failure or overcurrent output when using an inverter unit, it is difficult to judge whether the stop is caused by the compressor failure or some other failure (main PCB, power module, etc.). The inverter analyzer makes it possible to judge the cause of trouble easily and securely.
SiBE06-708_C Check Diagnose method (Diagnose according to 6 LEDs lighting status.) (1) If all the LEDs are lit uniformly, the compressor is defective. → Replace the compressor. (2) If the LEDs are not lit uniformly, check the power module. → Refer to Check No.22. (3) If NG in Check No.22, replace the power module. (Replace the main PCB. The power module is united with the main PCB.) If OK in Check No.22, check if there is any solder cracking on the PCB.
Check SiBE06-708_C RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B 1. Check that the voltage between the pins 10 - 11 is 15 VDC. 2. Check if the Hall IC generates the rotation pulse (0 ~ 15 VDC) 4 times between the pins 10 12, 10 - 13, when the fan motor is manually rotated once.
SiBE06-708_C 5.9 Check Installation Condition Check Check No.17 Installation condition check Check the allowable dimensions of the air suction and discharge area. NG Change the installation location or direction. OK Is the discharged air short-circuited? YES Change the installation location or direction. NO Is the outdoor heat exchanger very dirty? YES Clean the outdoor heat exchanger.
Check SiBE06-708_C 5.11 Outdoor Fan System Check Check No.19 DC motor Check the outdoor fan system. Fan motor lead wire connector disconnected? NO Outdoor fan running? YES YES Reconnect the connector. NO Go to Check No. 16. Outdoor fan system is functioning. (R15001) 5.12 Main Circuit Short Check Check No.20 25/35 class, RXS50K2V1B only Note: Check to make sure that the voltage between (+) and (–) of the diode bridge (DB1) is approx. 0 V before checking.
SiBE06-708_C Check RK(X)S25/35G2V1B 4 3 2 1 + ~ ~ – – + Tester (R12411) 2 3 4 – ~ ~ + 1 – + RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B Tester (R12035) Service Diagnosis 135
Check SiBE06-708_C RXS50K2V1B 4 3 2 1 – ~ ~ + – + Tester (R14700) 5.13 Capacitor Voltage Check Check No.21 RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B only Before this check, be sure to check the main circuit for short circuit. 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.
SiBE06-708_C Check 5.14 Power Module Check Check No.22 Note: Check to make sure that the voltage between (+) and (–) of the power module is approx. 0 V before checking. Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the connector, press the protrusion on the connector. Follow the procedure below to measure resistance between the terminals of the power module and the terminals of the compressor with a multi-tester.
Check SiBE06-708_C RK(X)S25/35G2V1B Power module (R18360) RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B Power module (R16069) 138 Service Diagnosis
SiBE06-708_C Check RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B Power module (R18390) RXS50K2V1B Power module (R16692) Service Diagnosis 139
SiBE06-708_C Part 7 Trial Operation and Field Settings 1. 2. 3. 4. Pump Down Operation........................................................................141 Forced Cooling Operation ...................................................................142 Trial Operation ....................................................................................144 Field Settings ......................................................................................145 4.1 4.2 4.3 4.
SiBE06-708_C Pump Down Operation 1. Pump Down Operation Outline In order to protect the environment, be sure to conduct pump down operation when relocating or disposing the unit. Detail 1) Remove the valve caps from the liquid stop valve and the gas stop valve. 2) Carry out forced cooling operation. 3) After 5 to 10 minutes, close the liquid stop valve with a hexagonal wrench. 4) After 2 to 3 minutes, close the gas stop valve and stop the forced cooling operation.
Forced Cooling Operation SiBE06-708_C 2. Forced Cooling Operation Item Conditions Forced Cooling The forced cooling operation is allowed when both of the following conditions are met. 1) The outdoor unit is not abnormal and not in the 3-minute standby mode. 2) The outdoor unit is not operating. Start Command frequency End Others The forced cooling operation starts when any of the following conditions is fulfilled.
SiBE06-708_C Forced Cooling Operation Outdoor Unit: RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B S102 S2 ON A B CD LED-A SW4 Forced cooling operation ON/OFF switch SW1 (R14963) Outdoor Unit: RXS50K2V1B Forced cooling operation ON/OFF switch (SW1) 1 2 3 Push Screwdriver Caution (R18725) When pressing the button, do not touch the terminal board. It has a high voltage and may cause electric shock.
Trial Operation SiBE06-708_C 3. Trial Operation Outline 1. Measure the power supply voltage and make sure that it falls within the specified range. 2. Trial operation should be carried out in either cooling or heating operation. In cooling operation, select the lowest programmable temperature (18°C); in heating operation, select the highest programmable temperature (30°C). Trial operation may be disabled in either operation mode depending on the room temperature.
SiBE06-708_C Field Settings 4. Field Settings 4.1 When 2 Units are Installed in 1 Room Outline When 2 indoor units are installed in 1 room, 1 of the 2 indoor units and the corresponding wireless remote controller can be set for different addresses. Both the indoor unit PCB and the wireless remote controller need alteration. Indoor Unit PCB 1) Remove the front grille. 2) Lift the sensor PCB fixing plate and remove the front shield plate. 3) Disconnect the connectors [S1] [S41] [S42].
Field Settings 4.2 SiBE06-708_C Model Type Setting The remote controller is common to the heat pump model and cooling only model. Set the DIP switch to the right position as shown in the illustration if the position of the DIP switch is wrong. Heat pump model Cooling only model DIP switch DIP switch (R18201) 4.3 Facility Setting Jumper (cooling at low outdoor temperature) Outline This function is limited only for facilities (the target of air conditioning is equipment (such as computer)).
SiBE06-708_C Field Settings RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B Main PCB J5 J4 J3 S40 S70 Cut the jumper J4. S90 S2 (R18253) 50 Class RKS50F2V1B, RK(X)S50G2V1B, RXS50J2V1B You can expand the operation range to –15°C by cutting the jumper on the outdoor unit PCB. If the outdoor temperature falls to –20°C or lower, the operation stops. If the outdoor temperature rises, the operation starts again. S102 S2 ON A B CD LED-A Turn on the switch SW4-B.
Field Settings SiBE06-708_C RXS50K2V1B You can expand the operation range to –10°C by cutting the jumper (J6) on the outdoor unit PCB. If the outdoor temperature falls to –18°C or lower, the operation stops. If the outdoor temperature rises, the operation starts again. J5 J7 J8 J6 GND Cut the jumper J6. (R18276) 148 Caution 1. If the outdoor unit is installed where the outdoor heat exchanger of the unit is exposed to direct wind, provide a windbreak wall. 2.
SiBE06-708_C 4.4 Field Settings Jumper and Switch Settings Indoor Unit Function Switch / Jumper Fan speed setting when compressor stops for thermostat OFF. (effective only in cooling operation) JB Power failure recovery function JC Upward airflow limit setting SW2-4 Switch: OFF Switch: ON Jumper: connected Jumper: cut (factory set) Fan speed setting ; Fan speed setting; “0” (The fan Remote controller stops.
Silicon Grease on Power Transistor / Diode Bridge SiBE06-708_C 5. Silicon Grease on Power Transistor / Diode Bridge Outline Apply the specified silicon grease to the heat radiation part of a power transistor / diode bridge when you replace an outdoor unit PCB. The silicon grease encourages the heat radiation of a power transistor / diode bridge. Detail 1. 2. 3. 4. Wipe off the old silicon grease completely. Apply the silicon grease evenly. See the illustrations below for examples of application.
SiBE06-708_C Part 8 Appendix 1. Piping Diagrams..................................................................................152 1.1 Indoor Unit............................................................................................152 1.2 Outdoor Unit .........................................................................................152 2. Wiring Diagrams..................................................................................156 2.1 Indoor Unit.....................................
Piping Diagrams SiBE06-708_C 1. Piping Diagrams 1.1 Indoor Unit FVXS25/35FV1B FVXS50FV1B INDOOR UNIT INDOOR UNIT MUFFLER ASSY 7.0CuT 6.4CuT HEAT EXCHANGER MUFFLER ASSY 7.0CuT THERMISTOR ON HEAT EXCH. M M 6.4CuT 9.5CuT FIELD PIPING (9.5CuT) FIELD PIPING (6.4CuT) TURBO FAN FAN MOTOR FIELD PIPING (12.7CuT) 9.5CuT REFRIGERANT FLOW HEAT EXCHANGER THERMISTOR ON HEAT EXCH. 6.4CuT TURBO FAN FAN MOTOR FIELD PIPING (6.4CuT) 6.4CuT 6.4CuT 6.4CuT 6.4CuT 6.4CuT 6.4CuT 6.4CuT 6.4CuT 6.
SiBE06-708_C Piping Diagrams RKS25/35G2V1B, RKS25/35G2V1B9 OUTDOOR UNIT OUTDOOR TEMPERATURE THERMISTOR 9.5CuT 7.0CuT HEAT EXCHANGER 7.0CuT 4.8CuT MUFFLER WITH FILTER M ELECTRONIC EXPANSION VALVE EV 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 NORMALLY: OFF 9.5CuT 7.9CuT 6.4CuT MUFFLER WITH FILTER LIQUID STOP VALVE 7.9CuT MUFFLER DISCHARGE PIPE THERMISTOR 9.5CuT 9.
Piping Diagrams SiBE06-708_C 1.2.2 Heat Pump RXS25/35F2V1B OUTDOOR UNIT 9.5CuT 7.0CuT OUTDOOR TEMPERATURE THERMISTOR HEAT EXCHANGER 7.0CuT 4.8CuT MUFFLER WITH FILTER M MOTOR OPERATED VALVE MUFFLER WITH FILTER 9.5CuT PROPELLER FAN φ4.0×ID. 2.0CuT HEAT EXCHANGER THERMISTOR 4.8CuT 6.4CuT 6.4CuT 9.5CuT 7.9CuT FOUR WAY VALVE ON : HEATING 9.5CuT 6.4CuT MUFFLER WITH FILTER LIQUID STOP VALVE MUFFLER FIELD PIPING (6.4CuT) 7.9CuT DISCHARGE PIPE THERMISTOR 9.5CuT 9.
SiBE06-708_C Piping Diagrams RXS50F2V1B, RXS50G2V1B, RXS50J2V1B OUTDOOR UNIT HEAT EXCHANGER 7.9CuT OUTDOOR TEMPERATURE THERMISTOR 7.9CuT 7.9CuT 7.9CuT 7.9CuT CAPILLARY TUBE 1 7.9CuT 4.0CuT 7.9CuT 7.9CuT 7.9CuT CAPILLARY TUBE 2 CAPILLARY TUBE 3 4.0CuT 7.9CuT HEAT EXCHANGER THERMISTOR 4.0CuT MUFFLER WITH FILTER 6.4CuT 4.0CuT CAPILLARY TUBE 4 EV M PROPELLER FAN MUFFLER ELECTRONIC EXPANSION VALVE 6.4CuT 9.5CuT 12.7CuT 12.7CuT FOUR WAY VALVE ON : HEATING HEATING FILTER 12.7CuT 7.
Wiring Diagrams SiBE06-708_C 2. Wiring Diagrams 2.1 Indoor Unit FVXS25/35/50FV1B PCB3 S27 S2W(4) PCB2 S26 V1 F1U ~ ~ RECTIFIER H1 3.15A H2 S4W WIRELESS REMOTE CONTROLLER TRANSMISSION CIRCUIT PCB4 H1P S1W S47 7 E1 4 H2P 1 M1S M2S indoor M M RED ORG YLW PNK BLU RED ORG YLW PNK BLU S42 1 S21 GRN S1 E3 RED BLU BRN ORG WHT M HA S48 S49 t° PCB1 S32 5 outdoor FIELD WIRING.
SiBE06-708_C 2.2 Wiring Diagrams Outdoor Unit RK(X)S25/35F2V1B R12T t° BRN V2 HN2 S RED V3 GRN/YLW E 7 IPM1 HC4 + GRY HN3 BLU DB2 ~ + ~ _ + _ C74 3.15A ~ _ 1 FU1 IC11 + _ C75 3.
Wiring Diagrams SiBE06-708_C RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25/35K2V1B, RXS25K3V1B FIELD WIRING.
SiBE06-708_C Wiring Diagrams RXS50F2V1B, RXS50G2V1B, RXS50J2V1B L1R Z2C N AC1 BRN TO INDOOR UNIT X2M 1 2 3 1 2 3 BLU WHT BLK Z3C MRM20 1 9 8 V11 V6 AC2 6(P) + + + 7(N) 2 S70 1 PM1 U V W 5 4 3 FU2 3.15 A 1 S10 7 Z5C X12A RED RED 3.
Removal Procedure (Booklet No.) SiBE06-708_C 3. Removal Procedure (Booklet No.) Refer to the following booklets for removal procedure. 160 ∗FVXS25/35/50FV1B Refer to Si061262_A. ∗RK(X)S25/35F2V1B Refer to Si001066. ∗RK(X)S25/35G2V1B Refer to Si001069. ∗RK(X)S25/35G2V1B9, RXS25/35J2V1B Refer to Si001067. ∗RKS25K2V1B Refer to Si001156. ∗RXS25K3V1B, RXS35K2V1B Refer to Si001273. ∗RK(X)S50F2V1B, RK(X)S50G2V1B, RXS50J2V1B Refer to Si001076. ∗RXS50K2V1B Refer to Si001274.
Revision History Month / Year Version Revised contents 03 / 2007 SiBE06-708 05 / 2010 SiBE06-708_A Model addition: RK(X)S25/35/50G2V1B, RK(X)S25/35G2V1B9 01 / 2011 SiBE06-708_B Model addition: RXS25/35/50J2V1B 01 / 2013 SiBE06-708_C Model addition: RXS25/35/50K2V1B, RXS25K3V1B First edition
Warning z Daikin products are manufactured for export to numerous countries throughout the world. Prior to purchase, please confirm with your local authorised importer, distributor and/or retailer whether this product conforms to the applicable standards, and is suitable for use, in the region where the product will be used. This statement does not purport to exclude, restrict or modify the application of any local legislation. z Ask a qualified installer or contractor to install this product.
