Page 1 SiBE06-708_A Inverter Pair Floor Standing Type F-Series [Applied Models] Inverter Pair : Cooling Only Inverter Pair : Heat Pump...
Page 2 SiBE06-708_A Inverter Pair Floor Standing Type F-Series Cooling Only Indoor Unit FVXS25FV1B FVXS35FV1B FVXS50FV1B Outdoor Unit RKS25F2V1B RKS25G2V1B RKS25G2V1B9 RKS35F2V1B RKS35G2V1B RKS35G2V1B9 RKS50F2V1B RKS50G2V1B Heat Pump Indoor Unit FVXS25FV1B FVXS35FV1B FVXS50FV1B Outdoor Unit RXS25F2V1B RXS25G2V1B RXS25G2V1B9 RXS35F2V1B RXS35G2V1B RXS35G2V1B9 RXS50F2V1B RXS50G2V1B Table of Contents...
Page 3: Table Of Contents
SiBE06-708_A 1. Introduction .................... vi 1.1 Safety Cautions ..................vi 1.2 Used Icons ....................x Part 1 List of Functions ..............1 1. Functions....................2 1.1 Cooling Only.....................2 1.2 Heat Pump ....................5 Part 2 Specifications ..............8 1. Specifications ..................9 1.1 Cooling Only.....................9 1.2 Heat Pump .....................14 Part 3 Printed Circuit Board Connector Wiring Diagram ...
Page 4 SiBE06-708_A Part 5 Operation Manual ............. 58 1. System Configuration................59 2. Operation Manual..................60 2.1 Names of Parts..................60 2.2 AUTO · DRY · COOL · HEAT · FAN Operation ........63 2.3 Adjusting the Airflow Direction..............65 2.4 POWERFUL Operation ................67 2.5 OUTDOOR UNIT QUIET Operation............68 2.6 ECONO Operation .................69 2.7 TIMER Operation ...................70 2.8 WEEKLY TIMER Operation ..............72...
Page 5 SiBE06-708_A Part 7 Removal Procedure ............136 1. Indoor Unit...................137 1.1 Removal of Air Filter / Front Panel / Front Grille ........137 1.2 Removal of Horizontal Blade..............141 1.3 Removal of Electrical Box ..............142 1.4 Removal of PCB...................144 1.5 Removal of Vertical Blades ..............148 1.6 Removal of Heat Exchanger ..............151 1.7 Removal of Fan Rotor / Fan Motor............152 2.
Page 6 SiBE06-708_A 2.4 Facility Setting Jumper and Switch (cooling at low outdoor temperature)............260 2.5 Jumper and Switch Settings..............261 3. Application of Silicon Grease to a Power Transistor and a Diode Bridge ................262 Part 9 Appendix................. 263 1. Piping Diagrams..................264 1.1 Indoor Unit....................264 1.2 Outdoor Unit ..................265 2.
Page 7: Introduction
SiBE06-708_A Introduction 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ Warning” Warnings items are especially important since they can lead to death or serious injury if they are not followed closely.
Page 8 Introduction SiBE06-708_A 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.
Page 9 SiBE06-708_A 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.
Page 10 Introduction SiBE06-708_A 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.
Page 11: Used Icons
SiBE06-708_A 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.
Page 12: Part 1 List Of Functions
SiBE06-708_A Part 1 List of Functions 1. Functions....................2 1.1 Cooling Only.....................2 1.2 Heat Pump ....................5 List of Functions...
Page 13: Functions
SiBE06-708_A Functions 1. Functions Cooling Only Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean –10 –10 Air-Purifying Filter — — Operation Limit for Cooling (°CDB) ★ ★ Operation Limit for Heating (°CWB) — — Photocatalytic Deodorizing Filter —...
Page 14 Functions SiBE06-708_A Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean –10 –10 Air-Purifying Filter — — Operation Limit for Cooling (°CDB) ★ ★ Operation Limit for Heating (°CWB) — — Photocatalytic Deodorizing Filter — —...
Page 15 SiBE06-708_A Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean –10 Air-Purifying Filter — Operation Limit for Cooling (°CDB) ★ Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter — PAM Control Air-Purifying Filter with Photocatalytic —...
Page 16: Heat Pump
Functions SiBE06-708_A Heat Pump Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean Air-Purifying Filter — — –10 –10 Operation Limit for Cooling (°CDB) –15 –15 Operation Limit for Heating (°CWB) Photocatalytic Deodorizing Filter — —...
Page 17 SiBE06-708_A Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean Air-Purifying Filter — — –10 –10 Operation Limit for Cooling (°CDB) –15 –15 Operation Limit for Heating (°CWB) Photocatalytic Deodorizing Filter — — PAM Control Air-Purifying Filter with Photocatalytic —...
Page 18 Functions SiBE06-708_A Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean Air-Purifying Filter — –10 Operation Limit for Cooling (°CDB) –15 Operation Limit for Heating (°CWB) Photocatalytic Deodorizing Filter — PAM Control Air-Purifying Filter with Photocatalytic —...
Page 19: Part 2 Specifications
SiBE06-708_A Part 2 Specifications 1. Specifications ..................9 1.1 Cooling Only.....................9 1.2 Heat Pump .....................14 Specifications...
Page 20: Specifications
Specifications SiBE06-708_A 1. Specifications 1.1 Cooling Only 50 Hz, 220 - 230 - 240 V Indoor Units FVXS25FV1B FVXS35FV1B Model Outdoor Units RKS25F2V1B RKS35F2V1B 2.5 (1.3 ~ 3.0) 3.5 (1.4 ~ 3.8) Capacity Btu/h 8,500 (4,400 ~ 10,200) 11,900 (4,800 ~ 13,000) Rated (Min.
Page 21 SiBE06-708_A Specifications 50 Hz, 220 - 230 - 240 V Indoor Units FVXS50FV1B Model Outdoor Units RKS50F2V1B 5.0 (1.4 ~ 5.6) Capacity Btu/h 17,100 (4,800 ~ 19,100) Rated (Min. ~ Max.) kcal/h 4,300 (1,200 ~ 4,820) Moisture Removal Running Current (Rated) 7.2 - 6.8 - 6.6 Power Consumption 1,550 (500 ~ 2,000)
Page 22 Specifications SiBE06-708_A 50 Hz, 220 - 230 - 240 V Indoor Units FVXS25FV1B FVXS35FV1B Model Outdoor Units RKS25G2V1B RKS35G2V1B 2.5 (1.3 ~ 3.0) 3.5 (1.4 ~ 3.8) Capacity Btu/h 8,500 (4,400 ~ 10,200) 11,900 (4,800 ~ 13,000) Rated (Min. ~ Max.) kcal/h 2,150 (1,120 ~ 2,580) 3,010 (1,200 ~ 3,270)
Page 23 SiBE06-708_A Specifications 50 Hz, 220 - 230 - 240 V Indoor Units FVXS50FV1B Model Outdoor Units RKS50G2V1B 5.0 (1.4 ~ 5.6) Capacity Btu/h 17,100 (4,800 ~ 19,100) Rated (Min. ~ Max.) kcal/h 4,300 (1,200 ~ 4,820) Moisture Removal Running Current (Rated) 7.2 - 6.8 - 6.6 Power Consumption 1,550 (500 ~ 2,000)
Page 24 Specifications SiBE06-708_A 50 Hz, 220 - 230 - 240 V Indoor Units FVXS25FV1B FVXS35FV1B Model Outdoor Units RKS25G2V1B9 RKS35G2V1B9 2.5 (1.3 ~ 3.0) 3.5 (1.4 ~ 3.8) Capacity Btu/h 8,500 (4,400 ~ 10,200) 11,900 (4,800 ~ 13,000) Rated (Min. ~ Max.) kcal/h 2,150 (1,120 ~ 2,580) 3,010 (1,200 ~ 3,270)
Page 25: Heat Pump
SiBE06-708_A Specifications Heat Pump 50 Hz, 220 - 230 - 240 V Indoor Units FVXS25FV1B FVXS35FV1B Model RXS25F2V1B RXS35F2V1B Outdoor Units Cooling Heating Cooling Heating 2.5 (1.3 ~ 3.0) 3.4 (1.3 ~ 4.5) 3.5 (1.4 ~ 3.8) 4.5 (1.4 ~ 5.0) Capacity Btu/h 8,500 (4,400 ~ 10,200)
Page 26 Specifications SiBE06-708_A 50 Hz, 220 - 230 - 240 V Indoor Units FVXS50FV1B Model RXS50F2V1B Outdoor Units Cooling Heating 5.0 (1.4 ~ 5.6) 5.8 (1.4 ~ 8.1) Capacity Btu/h 17,100 (4,800 ~ 19,100) 19,800 (4,800 ~ 27,600) Rated (Min. ~ Max.) kcal/h 4,300 (1,200 ~ 4,820) 4,990 (1,200 ~ 6,970)
Page 27 SiBE06-708_A Specifications 50 Hz, 220 - 230 - 240 V Indoor Units FVXS25FV1B FVXS35FV1B Model RXS25G2V1B RXS35G2V1B Outdoor Units Cooling Heating Cooling Heating 2.5 (1.3 ~ 3.0) 3.4 (1.3 ~ 4.5) 3.5 (1.4 ~ 3.8) 4.5 (1.4 ~ 5.0) Capacity Btu/h 8,500 (4,400 ~ 10,200) 11,600 (4,400 ~ 17,100)
Page 28 Specifications SiBE06-708_A 50 Hz, 220 - 230 - 240 V Indoor Units FVXS50FV1B Model RXS50G2V1B Outdoor Units Cooling Heating 5.0 (1.4 ~ 5.6) 5.8 (1.4 ~ 8.1) Capacity Btu/h 17,100 (4,800 ~ 19,100) 19,800 (4,800 ~ 27,600) Rated (Min. ~ Max.) kcal/h 4,300 (1,200 ~ 4,820) 4,990 (1,200 ~ 6,970)
Page 29 SiBE06-708_A Specifications 50 Hz, 220 - 230 - 240 V Indoor Units FVXS25FV1B FVXS35FV1B Model RXS25G2V1B9 RXS35G2V1B9 Outdoor Units Cooling Heating Cooling Heating 2.5 (1.3 ~ 3.0) 3.4 (1.3 ~ 4.5) 3.5 (1.4 ~ 3.8) 4.5 (1.4 ~ 5.0) Capacity Btu/h 8,500 (4,400 ~ 10,200) 11,600 (4,400 ~ 17,100)
Page 30: Part 3 Printed Circuit Board Connector Wiring Diagram
SiBE06-708_A Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........20 1.1 Indoor Unit....................20 1.2 Outdoor Unit ...................22 Printed Circuit Board Connector Wiring Diagram...
Page 31: Printed Circuit Board Connector Wiring Diagram
SiBE06-708_A Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram Indoor Unit Connectors and Other Parts PCB(1): Sensor PCB 1) S49 Connector for control PCB 2) RTH2 (R1T) Room temperature thermistor PCB(2): Control PCB 1) S1 Connector for fan motor 2) S21 Connector for centralized control (HA)
Page 32 Printed Circuit Board Connector Wiring Diagram SiBE06-708_A PCB Detail PCB(1): Sensor PCB RTH2 3P191450-1 PCB(2): Control PCB LED A S21 S41 2P191446-1 PCB(3): Service PCB PCB(4): Display PCB LED1 LED2 3P191447-1 SW2-4 3P191448-1 Printed Circuit Board Connector Wiring Diagram...
Page 33: Outdoor Unit
SiBE06-708_A Printed Circuit Board Connector Wiring Diagram Outdoor Unit 1.2.1 RK(X)S25/35F2V1B Connectors and PCB (1): Filter PCB Other Parts 1) S11 Connector for main PCB 2) HL1, HN1, S Connector for terminal board 3) E Terminal for earth 4) HC1, HC2 Connector for main PCB HL2, HN2 5) HR1...
Page 34 Printed Circuit Board Connector Wiring Diagram SiBE06-708_A PCB Detail PCB(1): Filter PCB V2 FU3 3P143310-1 PCB(2): Main PCB LED A 2P143284-6 Printed Circuit Board Connector Wiring Diagram...
Page 35 SiBE06-708_A Printed Circuit Board Connector Wiring Diagram 1.2.2 RK(X)S25/35G2V1B Connectors and PCB (1): Filter PCB Other Parts 1) S11 Connector for main PCB 2) HL1, HN1, S Connector for terminal board 3) E1 Terminal for earth 4) E2 Connector for terminal board (earth) 5) HL2, HN2 Connector for main PCB 6) HR1...
Page 36 Printed Circuit Board Connector Wiring Diagram SiBE06-708_A PCB Detail PCB (1): Filter PCB HL1 HN1 S (on main PCB) 3P203203-1 PCB (2): Main PCB LED A 2P203198-1 Printed Circuit Board Connector Wiring Diagram...
Page 37 SiBE06-708_A Printed Circuit Board Connector Wiring Diagram 1.2.3 RK(X)S25/35G2V1B9 Connectors and PCB (1): Filter PCB Other Parts 1) S11 Connector for main PCB 2) AC1, AC2, S Connector for terminal board 3) E1, E2 Terminal for earth 4) HL2, HN2 Connector for main PCB 5) HR1 Connector for reactor...
Page 38 Printed Circuit Board Connector Wiring Diagram SiBE06-708_A PCB Detail PCB (1): Filter PCB E1, E2 (on main PCB) 3P254234-1 PCB (2): Main PCB U VW J5 J4 S90 LED A S100 S50 2P254206-1 PCB (3): Forced Operation Button PCB S110 3P255755-1 Printed Circuit Board Connector Wiring Diagram...
Page 39 SiBE06-708_A Printed Circuit Board Connector Wiring Diagram 1.2.4 RK(X)S50F2V1B, RK(X)S50G2V1B Connectors and PCB (1): Main PCB Other Parts 1) S10 Connector for terminal board (indoor-outdoor transmission) 2) S20 Connector for electronic expansion valve coil 3) S40 Connector for overload protector 4) S51, S101 Connector for service monitor PCB 5) S70...
Page 40 Printed Circuit Board Connector Wiring Diagram SiBE06-708_A PCB Detail PCB (1): Main PCB S101 2P169046-1 2P169046-5 PCB (2): Service Monitor PCB LED A SW4-B SW4-C S102 3P169059-1 Printed Circuit Board Connector Wiring Diagram...
Page 41: Part 4 Function And Control
SiBE06-708_A Part 4 Function and Control 1. Main Functions..................31 1.1 Temperature Control ................31 1.2 Frequency Principle................31 1.3 Airflow Direction Control.................33 1.4 Fan Speed Control for Indoor Units............34 1.5 Program Dry Operation ................35 1.6 Automatic Operation................36 1.7 Thermostat Control.................37 1.8 NIGHT SET Mode ..................38 1.9 ECONO Operation .................39 1.10 Inverter POWERFUL Operation .............40 1.11 Other Functions..................41...
Page 42: Main Functions
Main Functions SiBE06-708_A 1. Main Functions Temperature Control Definitions of The definitions of temperatures are classified as following. Temperatures Room temperature: temperature of lower part of the room Set temperature: temperature set by remote controller Room thermistor temperature: temperature detected by room temperature thermistor Target temperature: temperature determined by microcomputer Target temperature Room thermistor temperature...
Page 43 SiBE06-708_A Main Functions Drawing of The following drawing shows a schematic view of the inverter principle: Inverter Refrigerant circulation rate (high) high speed Amount of heat Amount of heat exchanged air (large) exchanged air (large) high f low f Amount of heat Amount of heat exchanged air (small) exchanged air (small)
Page 44: Airflow Direction Control
Main Functions SiBE06-708_A Airflow Direction Control Wide-Angle The louvers, made of elastic synthetic resin, provide a wide range of airflow that guarantees a comfortable air distribution. Louvers right and left (manual) upper air outlet (R6827) lower air outlet (R6828) Auto-Swing The following table explains the auto-swing process for cooling, dry, and heating : up and down cooling / dry...
Page 45: Fan Speed Control For Indoor Units
SiBE06-708_A Main Functions Fan Speed Control for Indoor Units 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.
Page 46: Program Dry Operation
Main Functions SiBE06-708_A 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 adjustment buttons are inoperable in this mode. Detail The microcomputer automatically sets the temperature and airflow rate.
Page 47: Automatic Operation
SiBE06-708_A Main Functions Automatic Operation Outline Automatic Cooling / Heating Function When the AUTO mode 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, and automatically operates in that mode. The unit automatically switches the operation mode to maintain the room temperature at the set temperature.
Page 48: Thermostat Control
Main Functions SiBE06-708_A Thermostat Control Thermostat control is based on the difference between the room thermistor temperature and the target temperature. 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.
Page 49: Night Set Mode
SiBE06-708_A 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.
Page 50: Econo Operation
Main Functions SiBE06-708_A ECONO Operation Outline The "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.
Page 51: Inverter Powerful Operation
SiBE06-708_A 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 POWERFUL button is pressed, the fan speed and target temperature are converted to the following states for 20 minutes.
Page 52: Other Functions
Main Functions SiBE06-708_A 1.11 Other Functions 1.11.1 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 either the airflow is stopped or is made very weak thereby carrying out comfortable heating of the room.
Page 53: Function Of Thermistor
SiBE06-708_A Function of Thermistor 2. Function of Thermistor Cooling Only Electronic expansion valve Compressor (R11611) Heat Pump Electronic expansion valve Four way valve Compressor (R11591) A Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge pipe Exchanger temperature.
Page 54: Control Specification
Control Specification SiBE06-708_A 3. Control Specification Mode Hierarchy Outline There are two modes; the one is the normal operation mode and the other is the forced operation mode for installation and providing service. Detail For Cooling Only Model There are following modes; stop and cooling (including drying). Air conditioner control mode Forced operating mode Forced cooling (for Pump Down Operation)
Page 55: Frequency Control
SiBE06-708_A 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.
Page 56 Control Specification SiBE06-708_A 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, freeze- up protection, defrost. 3.
Page 57: Controls At Mode Changing / Start-Up
SiBE06-708_A Control Specification Controls at Mode Changing / Start-up 3.3.1 Preheating Operation 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 10ºC, the inverter operation in open phase...
Page 58 Control Specification SiBE06-708_A 3.3.2 Four Way Valve Switching Outline In heating operation, current is conducted, and in cooling and defrosting, current is not conducted. In order to eliminate the switching sound when the heating is stopped, as the four way valve coil switches from ON to OFF, the OFF delay switch of the four way valve is carried out after the operation stopped.
Page 59: Discharge Pipe Temperature Control
SiBE06-708_A 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 this temperature from going up further. Detail Stop zone ˚C...
Page 60: Input Current Control
Control Specification SiBE06-708_A Input Current Control Outline The microcomputer calculates the input current during the compressor is running, and sets the frequency upper limit from the input current. In case of heat pump model, this control which is the upper limit control of the frequency takes priority to the lower limit of control of four way valve operation compensation.
Page 61: Freeze-Up Protection Control
SiBE06-708_A 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.
Page 62: Outdoor Fan Control
Control Specification SiBE06-708_A Outdoor Fan Control 1. Fan OFF delay when stopped The outdoor fan is turned OFF 60 seconds after the compressor stops. 2. 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.
Page 63: Defrost Control
SiBE06-708_A 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 is determined with the outdoor temperature and the outdoor heat exchanger temperature.
Page 64: Electronic Expansion Valve Control
Control Specification SiBE06-708_A 3.11 Electronic Expansion Valve Control Outline 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.
Page 65 SiBE06-708_A 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 Equalization Control When the compressor is stopped, the pressure equalization control is activated. The electronic expansion valve opens, and develops the pressure equalization.
Page 66 Control Specification SiBE06-708_A Detail When the starting control (cooling : seconds, heating : seconds) finishes, the detection timer for disconnection of the discharge pipe thermistor ( seconds) starts. When the timer is over, the following adjustment is made. 1. When the operation mode is cooling When the following condition is fulfilled, the discharge pipe thermistor disconnection is ascertained.
Page 67: Malfunctions
SiBE06-708_A 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.
Page 68: Forced Operation Mode
Control Specification SiBE06-708_A 3.13 Forced Operation Mode Outline Forced operation mode includes only forced cooling. Detail Item Forced Cooling Conditions 1) The outdoor unit is not abnormal and not in the 3-minute standby mode. 2) The outdoor unit is not operating. The forced operation is allowed when the above both conditions are met.
Page 69: Part 5 Operation Manual
SiBE06-708_A Part 5 Operation Manual 1. System Configuration................59 2. Operation Manual..................60 2.1 Names of Parts..................60 2.2 AUTO · DRY · COOL · HEAT · FAN Operation ........63 2.3 Adjusting the Airflow Direction..............65 2.4 POWERFUL Operation ................67 2.5 OUTDOOR UNIT QUIET Operation............68 2.6 ECONO Operation .................69 2.7 TIMER Operation ...................70 2.8 WEEKLY TIMER Operation ..............72...
Page 70: System Configuration
System Configuration SiBE06-708_A 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.
Page 71: Operation Manual
SiBE06-708_A Operation Manual 2. Operation Manual Names of Parts Names of parts Indoor Unit Opening the Front Panel Air outlet selection switch • This setting blows air from upper outlet only. This setting automatically decides a blow • pattern depending on mode and conditions. •...
Page 72 Operation Manual SiBE06-708_A Outdoor Unit 25/35 class 50 class Indoor Unit Titanium Apatite Photocatalytic The operation mode refers to the following • Air-Purifying Filter: table. • These filters are attached to the inside of Temperature Airflow Model Mode the air filters. setting rate Air outlet...
Page 73 SiBE06-708_A Operation Manual Remote Controller <Open the lid> <ARC452A1> 1. Signal transmitter: 9. ECONO button: • ECONO operation (page 16.) It sends signals to the indoor unit. 10. SWING button: 2. Display: • Adjusting the Airflow Direction (page 12.) • It displays the current settings. (In this illustration, each section is shown WEEKLY/PROGRAM/COPY/BACK/NEXT with all its displays ON for the purpose of...
Page 74: Auto · Dry · Cool · Heat · Fan Operation
Operation Manual SiBE06-708_A 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.
Page 75 SiBE06-708_A Operation Manual To change the airflow rate setting Press “FAN setting button”. AUTO or COOL or HEAT or FAN mode DRY mode Five levels of airflow rate setting from “ ” to “ ” plus “ ” “ ” are available. The airflow rate setting is not variable.
Page 76: Adjusting The Airflow Direction
Operation Manual SiBE06-708_A Adjusting the Airflow Direction Adjusting the Airflow Direction You can adjust the airflow direction to increase your comfort. To adjust the horizontal blade (flap) Press “SWING button ”. “ ” is displayed on the LCD and the •...
Page 77 SiBE06-708_A Operation Manual Airflow selection • Make airflow selection according to what suits you. When setting the airflow selection switch to • Air conditioner automatically decides the appropriate blowing pattern depending on the operating mode/situation. Operating mode Situation Blowing pattern •...
Page 78: Powerful Operation
Operation Manual SiBE06-708_A 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 Press “POWERFUL button”. • POWERFUL operation ends in 20minutes. Then the system automatically operates again with the previous settings which were used before POWERFUL operation.
Page 79: Outdoor Unit Quiet Operation
SiBE06-708_A Operation Manual 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 Press “QUIET button”.
Page 80: Econo Operation
Operation Manual SiBE06-708_A ECONO Operation ECONO Operation ECONO operation is a function which enables efficient operation by limiting the maximum power consumption value. This function is useful for cases in which attention should be paid to ensure a circuit breaker will not trip when the product runs alongside other appliances.
Page 81: Timer Operation
SiBE06-708_A Operation Manual 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 •...
Page 82 Operation Manual SiBE06-708_A TIMER Operation To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. Press “ON TIMER button”. is displayed. blinks. Press “SELECT button” until the time setting reaches the point you like.
Page 83: Weekly Timer Operation
SiBE06-708_A Operation Manual WEEKLY TIMER Operation WEEKLY TIMER Operation Up to 4 timer settings can be saved for each day of the week. It is convenient if the WEEKLY TIMER is set according to the family’s life style. Using in these cases of WEEKLY TIMER An example of WEEKLY TIMER settings is shown below.
Page 84 Operation Manual SiBE06-708_A WEEKLY TIMER Operation 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 Program 4 [Monday] 25˚C...
Page 85 SiBE06-708_A Operation Manual 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.
Page 86 Operation Manual SiBE06-708_A 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 Program 4 [Monday] 25˚C...
Page 87 SiBE06-708_A Operation Manual Confirming a reservation • The reservation can be confirmed. Press “ button”. • The day of the week and the reservation number of the current day will be displayed. Press “SELECT button” to select the day of the week and the reservation number to be confirmed.
Page 88: Part 6 Service Diagnosis
SiBE06-708_A Part 6 Service Diagnosis 1. Caution for Diagnosis................78 1.1 Troubleshooting with LED ..............78 2. Problem Symptoms and Measures ............79 3. Service Check Function ................80 3.1 ARC452 Series..................80 4. Troubleshooting ..................83 4.1 Error Codes and Description ..............83 4.2 Indoor Unit PCB Abnormality ..............84 4.3 Freeze-up Protection Control or Heating Peak-cut Control....85 4.4 Fan Motor (DC Motor) or Related Abnormality........87 4.5 Thermistor or Related Abnormality (Indoor Unit)........89...
Page 89: Caution For Diagnosis
SiBE06-708_A Caution for Diagnosis 1. Caution for Diagnosis Troubleshooting with LED Indoor Unit 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.
Page 90: Problem Symptoms And Measures
Problem Symptoms and Measures SiBE06-708_A 2. Problem Symptoms and Measures Symptom Check Item Details of Measure Reference Page The units does not operate. Check the power supply. Check to make sure that the rated voltage is — supplied. Check the type of the indoor units. Check to make sure that the indoor unit type is —...
Page 91: Service Check Function
SiBE06-708_A Service Check Function 3. Service Check Function ARC452 Series 1. When the timer cancel button is held down for 5 seconds, “ 00 ” indication appears on the Check Method 1 temperature display section. TIMER CANCEL button < ARC452 Series > (R12205) 2.
Page 92 Service Check Function SiBE06-708_A Check Method 2 1. Press the 3 buttons (TEMP▲, TEMP▼, MODE) at the same time. (R8381) The figure of the ten’s place blinks. (R8382) 2. Press the TEMP▲ or ▼ button and change the figure until you hear the sound of “beep” or “pi pi”.
Page 93 SiBE06-708_A Service Check Function 5. Press the TEMP▲ or ▼ button and change the figure until you hear the sound of “beep”. (R8383) 6. Diagnose by the sound. ★ “pi” : The figure of the ten’s place does not accord with the error code. ★...
Page 94: Troubleshooting
Troubleshooting SiBE06-708_A 4. Troubleshooting Error Codes and Description Reference Error Codes Description Page System Normal — U0★ Refrigerant shortage Low-voltage detection or over-voltage detection Signal transmission error (between indoor unit and outdoor unit) Unspecified voltage (between indoor unit and outdoor unit) Indoor Indoor unit PCB abnormality Unit...
Page 95: Indoor Unit Pcb Abnormality
SiBE06-708_A Troubleshooting Indoor Unit PCB Abnormality Remote Controller Display Method of Evaluation of zero-cross detection of power supply by the indoor unit PCB. Malfunction Detection Malfunction There is no zero-cross detection in approximately 10 seconds. Decision Conditions Supposed Wrong models interconnected Causes Defective indoor unit PCB Disconnection of connector...
Page 96: Freeze-Up Protection Control Or Heating Peak-Cut Control
Troubleshooting SiBE06-708_A Freeze-up Protection Control or Heating Peak-cut Control Remote Controller Display Method of Freeze-up protection control During cooling operation, the freeze-up protection control (operation halt) is activated Malfunction according to the temperature detected by the indoor heat exchanger thermistor. Detection Heating peak-cut control During heating operation, the temperature detected by the indoor heat exchanger thermistor...
Page 97 SiBE06-708_A Troubleshooting Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.06 Check the air passage. Refer to P.129 Is there any short circuit? Provide sufficient air passage. Check the air filter.
Page 98: Fan Motor (Dc Motor) Or Related Abnormality
Troubleshooting SiBE06-708_A Fan Motor (DC Motor) or Related Abnormality Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Detection Malfunction 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.
Page 99 SiBE06-708_A Troubleshooting Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Turn off the power supply Refer to P.127 and rotate the fan by hand. Does the fan Replace the indoor rotate smoothly? fan motor.
Page 100: Thermistor Or Related Abnormality (Indoor Unit)
Troubleshooting SiBE06-708_A Thermistor or Related Abnormality (Indoor Unit) C4 , C9 Remote Controller Display Method of The temperatures detected by the thermistors determine thermistor errors. Malfunction Detection Malfunction The thermistor input is more than 4.96 V or less than 0.04 V during compressor operation. Decision Conditions Supposed...
Page 101: Signal Transmission Error (Between Indoor Unit And Outdoor Unit)
SiBE06-708_A Troubleshooting Signal Transmission Error (between Indoor Unit and Outdoor Unit) Remote Controller Display Method of The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is checked whether it is normal. Malfunction Detection Malfunction The data sent from the outdoor unit cannot be received normally, or the content of the data is abnormal.
Page 102: Unspecified Voltage (Between Indoor Unit And Outdoor Unit)
Troubleshooting SiBE06-708_A Unspecified Voltage (between Indoor Unit and Outdoor Unit) Remote Controller Display Method of The supply power is detected for its requirements (different from pair type and multi type) by the indoor / outdoor transmission signal. Malfunction Detection Malfunction The pair type and multi type are interconnected.
Page 103: Outdoor Unit Pcb Abnormality
SiBE06-708_A Troubleshooting Outdoor Unit PCB Abnormality 4.8.1 25/35 Class Remote Controller Display Method of The system follows the microprocessor program as specified. The system checks to see if the zero-cross signal comes in properly. Malfunction Detection Malfunction The microprocessor program runs out of control. The zero-cross signal is not detected.
Page 104 Troubleshooting SiBE06-708_A 4.8.2 50 Class Remote Controller Display Method of Detection within the program of the microcomputer Malfunction Detection Malfunction The program of the microcomputer is in abnormal running order. Decision Conditions Supposed Defective outdoor unit PCB Noise Causes Momentary fall of voltage Momentary power failure Troubleshooting Be sure to turn off the power switch before connecting or disconnecting...
Page 105: Ol Activation (Compressor Overload)
SiBE06-708_A Troubleshooting OL Activation (Compressor Overload) Remote Controller Display Method of A compressor overload is detected through compressor OL. Malfunction Detection Malfunction If the error repeats twice, the system is shut down. Reset condition: Continuous run for about 60 minutes without any other error Decision ∗...
Page 106: Compressor Lock
Troubleshooting SiBE06-708_A 4.10 Compressor Lock Remote Controller Display Method of A compressor lock is detected by checking the compressor running condition through the Malfunction position detection circuit. Detection Malfunction <25/35 class> Operation stops due to overcurrent. Decision If the error repeats 16 times, the system is shut down. Conditions Reset condition: Continuous run for about 11 minutes without any other error <50 class>...
Page 107: Dc Fan Lock
SiBE06-708_A Troubleshooting 4.11 DC Fan Lock Remote Controller Display Method of An error is determined with the high-voltage fan motor rotation speed detected by the Hall IC. Malfunction Detection Malfunction The fan does not start in 15 ~ 60 seconds (depending on the model) even when the fan motor is running.
Page 108: Input Overcurrent Detection
Troubleshooting SiBE06-708_A 4.12 Input Overcurrent Detection Remote Controller Display Method of An input overcurrent is detected by checking the input current value with the compressor Malfunction running. Detection Malfunction The following current with the compressor running continues for 2.5 seconds. Cooling / Heating: Above 9.25 ~ 20 A (Refer to “Input current control”...
Page 109: Four Way Valve Abnormality
SiBE06-708_A Troubleshooting 4.13 Four Way Valve Abnormality Remote Controller Display Method of The room temperature thermistor, the indoor heat exchanger thermistor, the outdoor Malfunction temperature thermistor, and the outdoor heat exchanger thermistor are checked if they function within their normal ranges in each operation mode. Detection Malfunction A following condition continues over 1 ~ 10 minutes (depending on the model) after operating...
Page 110 Troubleshooting SiBE06-708_A Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.05 Four way valve coil Correct it. Refer to P.128 disconnected (loose)? Check No.06 Harness out of connector? Refer to P.129 Reconnect it.
Page 111: Discharge Pipe Temperature Control
SiBE06-708_A Troubleshooting 4.14 Discharge Pipe Temperature Control Remote Controller Display Method of An error is determined with the temperature detected by the discharge pipe thermistor. Malfunction Detection Malfunction If the temperature detected by the discharge pipe thermistor rises above °C, the compressor stops.
Page 112: High Pressure Control In Cooling
Troubleshooting SiBE06-708_A 4.15 High Pressure Control in Cooling Remote Controller Display Method of High-pressure control (operation halt, frequency drop, etc.) is activated in cooling operation if Malfunction the temperature sensed by the outdoor heat exchanger thermistor exceeds the limit. Detection Malfunction The temperature sensed by the outdoor heat exchanger thermistor rises above °C.
Page 113 SiBE06-708_A Troubleshooting Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.04 Check the installation space. Refer to P.127 Check No. 07 Check No.06 Change the installation Check the installation Refer to P.129 location or direction.
Page 114: Compressor System Sensor Abnormality
Troubleshooting SiBE06-708_A 4.16 Compressor System Sensor Abnormality 4.16.1 25/35 Class Remote Controller Display Method of The system checks the DC current before the compressor starts. Malfunction Detection Malfunction The DC current before compressor start-up is out of the range 0.5 ~ 4.5 V (sensor output converted to voltage value) Decision The DC voltage before compressor start-up is below 50 V.
Page 115 SiBE06-708_A Troubleshooting 4.16.2 50 Class Remote Controller Display Method of The system checks the supply voltage and the DC voltage before the compressor starts. The system checks the compressor current right after the compressor starts. Malfunction Detection Malfunction The supply voltage and the DC voltage is obviously low or high. Decision The compressor current does not run when the compressor starts.
Page 116: Position Sensor Abnormality
Troubleshooting SiBE06-708_A 4.17 Position Sensor Abnormality Remote Controller Display Method of A compressor start-up failure is detected by checking the compressor running condition through Malfunction the position detection circuit. Detection Malfunction If the error repeats, the system is shut down. Reset condition: Continuous run for about 11 minutes (50 class: 5 minutes) without any Decision other error...
Page 117 SiBE06-708_A Troubleshooting Troubleshooting 25/35 class Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.29 Refer to P.134 Turn off the power. Check the power supply voltage. Voltage as rated? Correct the power supply.
Page 118 Troubleshooting SiBE06-708_A Troubleshooting 50 class Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Turn off the power. Check the power supply voltage. Voltage as rated? Correct the power supply. Check the connection.
Page 119: Dc Voltage / Current Sensor Abnormality (25/35 Class)
SiBE06-708_A Troubleshooting 4.18 DC Voltage / Current Sensor Abnormality (25/35 Class) Remote Controller Display Method of DC voltage or DC current sensor abnormality is identified based on the compressor running Malfunction frequency and the input current. Detection Malfunction The compressor running frequency is above 52 Hz. If the error repeats 4 times, the system is shut down.
Page 120: Ct Or Related Abnormality (50 Class)
Troubleshooting SiBE06-708_A 4.19 CT or Related Abnormality (50 Class) Remote Controller Display Method of A CT or related error is detected by checking the compressor running frequency and CT- Malfunction detected input current. Detection Malfunction The compressor running frequency is more than 55 Hz, and the CT input current is below 0.5 A.
Page 121 SiBE06-708_A Troubleshooting Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.12 Turn off the power and turn it on Refer to P.132 again. Start operation. ∗ Running current as shown at Replace the outdoor unit right with relay cable 1...
Page 122: Thermistor Or Related Abnormality (Outdoor Unit)
Troubleshooting SiBE06-708_A 4.20 Thermistor or Related Abnormality (Outdoor Unit) H9 , J3 , J6 , P4 Remote Controller Display Method of This fault is identified based on the thermistor input voltage to the microcomputer. Malfunction A thermistor fault is identified based on the temperature sensed by each thermistor. Detection Malfunction The thermistor input voltage is above 4.96 V or below 0.04 V with the power on.
Page 123 SiBE06-708_A Troubleshooting Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.06 Refer to P.129 Turn on the power again. Error displayed Reconnect the connectors again on remote or thermistors.
Page 124: Electrical Box Temperature Rise
Troubleshooting SiBE06-708_A 4.21 Electrical Box Temperature Rise Remote Controller Display Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor off. Detection Malfunction With the compressor off, the radiation fin temperature is above °C.
Page 125 SiBE06-708_A Troubleshooting Troubleshooting RK(X)S25/35F2V1B models Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.06 WARNING Turn off the power and turn it on Refer to P.129 again. To cool the electrical components, the outdoor fan starts when the radiation fin temperature rises above...
Page 126 Troubleshooting SiBE06-708_A Troubleshooting RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RK(X)S50F2V1B, RK(X)S50G2V1B models Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.07 WARNING Turn off the power and turn it on Refer to P.130 again.
Page 127: Radiation Fin Temperature Rise
SiBE06-708_A Troubleshooting 4.22 Radiation Fin Temperature Rise Remote Controller Display Method of A radiation fin temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor on. Detection Malfunction If the radiation fin temperature with the compressor on is above °C.
Page 128 Troubleshooting SiBE06-708_A Troubleshooting RK(X)S25/35F2V1B models Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.06 Turn off the power and turn it on Refer to P.129 again to start the system. Check No.07 Refer to P.130 Error displayed again?
Page 129 SiBE06-708_A Troubleshooting Troubleshooting RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RK(X)S50F2V1B, RK(X)S50G2V1B models Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.07 Refer to P.130 Turn off the power and turn it on again to start the system.
Page 130: Output Overcurrent Detection
Troubleshooting SiBE06-708_A 4.23 Output Overcurrent Detection Remote Controller Display Method of An output overcurrent is detected by checking the current that flows in the inverter DC section. Malfunction Detection Malfunction A position signal error occurs while the compressor is running. A speed error occurs while the compressor is running.
Page 131 SiBE06-708_A Troubleshooting Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. ∗ An output overcurrent signal may result from wrong internal wiring. If the wires have been disconnected and reconnected and the system is interrupted by an output overcurrent, take the Check No.07 following procedure.
Page 132: Refrigerant Shortage
Troubleshooting SiBE06-708_A 4.24 Refrigerant Shortage Remote Controller Display Method of Refrigerant shortage detection I: Malfunction Refrigerant shortage is detected by checking the input current value and the compressor running frequency. If the refrigerant is short, the input current is smaller than the normal value. Detection Refrigerant shortage detection II: Refrigerant shortage is detected by checking the discharge pipe temperature and the opening of...
Page 133 SiBE06-708_A Troubleshooting Refrigerant shortage detection III : (25/35 class only) When the difference of the temperature is smaller than °C, it is regarded as refrigerant shortage. (°C) room thermistor temperature – indoor heat exchanger temperature Cooling outdoor heat exchanger temperature – outdoor temperature indoor heat exchanger temperature –...
Page 134 Troubleshooting SiBE06-708_A Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.04 Refer to P.127 Any thermistor Replace them in position. disconnected? ∗ Discharge pipe thermistor ∗ Indoor or outdoor heat exchanger thermistor ∗...
Page 135: Low-Voltage Detection Or Over-Voltage Detection
SiBE06-708_A Troubleshooting 4.25 Low-voltage Detection or Over-voltage Detection Remote Controller Display Method of Low-voltage detection: Malfunction An abnormal voltage drop is detected by the DC voltage detection circuit. Detection Over-voltage detection: An abnormal voltage rise is detected by the over-voltage detection circuit. Malfunction Low-voltage detection: The voltage detected by the DC voltage detection circuit is below 150 ~ 180 V (depending on...
Page 136 Troubleshooting SiBE06-708_A Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check the supply voltage. Supply voltage as Correct the power supply. specified? Rotate the fan by hand. Does the fan rotate Replace the fan motor or smoothly? the outdoor unit PCB.
Page 137: Signal Transmission Error On Outdoor Unit Pcb (50 Class Only)
SiBE06-708_A Troubleshooting 4.26 Signal Transmission Error on Outdoor Unit PCB (50 Class Only) Remote Controller Display Method of Communication error between microcomputer mounted on the main microcomputer and PM1. Malfunction Detection Malfunction The abnormality is determined when the data sent from the PM1 can not be received for 9 Decision seconds.
Page 138: Check
Check SiBE06-708_A 5. Check How to Check 5.1.1 Fan Motor Connector Output Check Check No.01 1. Check the connection of connector. 2. Check the motor power supply voltage output (pins 4 - 7). 3. Check the motor control voltage (pins 4 - 3). 4.
Page 139 SiBE06-708_A Check 5.1.3 Four Way Valve Performance Check Check No.05 Turn off the power and turn it on again. ∗ Four way valve coil Start heating operation. Cooling / Dry : No continuity Heating : Continuity voltage at 220 - 240 Replace the outdoor unit VAC with compressor PCB.
Page 140 Check SiBE06-708_A 5.1.4 Thermistor Resistance Check Check No.06 Disconnect the connectors of the thermistors from the PCB, and measure the resistance of each thermistor using tester. The relationship between normal temperature and resistance is shown in the table and the graph below.
Page 141 SiBE06-708_A Check 5.1.5 Installation Condition Check Check No.07 Installation condition check Check the allowable Abnormal dimensions of the air Change the installation suction and location or direction. discharge area. Normal Is the discharged air Change the installation short-circuited? location or direction. Is the outdoor heat Clean the outdoor heat exchanger very dirty?
Page 142 Check SiBE06-708_A 5.1.7 Outdoor Fan System Check Check No.09 DC motor Check the outdoor fan system. Fan motor lead wire connector Outdoor fan running? Reconnect the connector. disconnected? Go to Check No. 15. Outdoor fan system is functioning. (R7159) 5.1.8 Power Supply Waveforms Check Check No.10 Measure the power supply waveform between No.
Page 143 SiBE06-708_A Check 5.1.10 Capacitor Voltage Check Check No.12 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. Multimeter (DC voltage range) Reactor lead wire...
Page 144 Check SiBE06-708_A 5.1.12 Rotation Pulse Check on the Outdoor Unit PCB Check No.15 RK(X)S25/35/50F2V1B, RK(X)S25/35/50G2V1B Make sure that the voltage of 320 ± 30 V is applied. 1. Set operation off and power off. Disconnect the connector S70. 2. Check that the voltage between the pins 4 - 7 is 320 VDC. 3.
Page 145 SiBE06-708_A Check 5.1.13 Main Circuit Short Check Check No.29 Note: Check to make sure that the voltage between (+) and (–) of the diode bridge (DB1) is approx. 0 V before checking. Measure the resistance between the pins of the DB1 as below. If the resistance is ∞...
Page 146 Check SiBE06-708_A RK(X)S25/35G2V1B9 models Tester (R12035) Service Diagnosis...
Page 147: Part 7 Removal Procedure
SiBE06-708_A Part 7 Removal Procedure 1. Indoor Unit...................137 1.1 Removal of Air Filter / Front Panel / Front Grille ........137 1.2 Removal of Horizontal Blade..............141 1.3 Removal of Electrical Box ..............142 1.4 Removal of PCB...................144 1.5 Removal of Vertical Blades ..............148 1.6 Removal of Heat Exchanger ..............151 1.7 Removal of Fan Rotor / Fan Motor............152 2.
Page 148: Indoor Unit
Indoor Unit SiBE06-708_A 1. Indoor Unit Removal of Air Filter / Front Panel / Front Grille Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. External appearance Indoor Unit ON / Operation lamp Timer lamp...
Page 149 SiBE06-708_A Indoor Unit Step Procedure Points Open the front panel. Hook String (R11496) Press the 2 hooks of the top of the air filter downward to unfasten the hooks. (R11497) Pull the air filter up and remove it. Air filter (R11498) Removal Procedure...
Page 150 Indoor Unit SiBE06-708_A Step Procedure Points Release the string from the hook. Lift up the front panel to unfasten the 3 hooks at the bottom and then remove the front panel. When installing the air filter, catch the 2 hooks Front grille Hooks for the air filter at the bottom.
Page 151 SiBE06-708_A Indoor Unit Step Procedure Points Pull the front grille to There are 3 hooks on the top your side to remove. of the main unit. (R6775) Removal Procedure...
Page 152: Removal Of Horizontal Blade
Indoor Unit SiBE06-708_A Removal of Horizontal Blade Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Open the horizontal Horizontal blade blade. Release the center shaft. (R6778) Bend the horizontal Release the left shaft first blade to release the...
Page 153: Removal Of Electrical Box
SiBE06-708_A Indoor Unit Removal of Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the 2 earth Hook screws. Sensor PCB fixing plate Unfasten the hook and open the sensor PCB fixing plate.
Page 154 Indoor Unit SiBE06-708_A Step Procedure Points Disconnect the 3 [S1] : fan motor connectors [S1] [S41] [S41] : lower air outlet motor [S42]. [S42] : swing motor [S42] [S41] [S1] (R6784) Remove the screw of the electrical box. Electrical (R6785) Pull out the electrical box.
Page 155: Removal Of Pcb
SiBE06-708_A Indoor Unit Removal of PCB Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the shield plate. Hooks Unfasten the 8 hooks of the shield plate and remove it.
Page 156 Indoor Unit SiBE06-708_A Step Procedure Points 3. Remove the service PCB. Release the left hook first. Lamp cover Unfasten the 2 hooks of the lamp cover. Hook (R6790) Display Service (R6791) Unfasten the 2 hooks of the service PCB. Hooks Service PCB (R6792) Disconnect the...
Page 157 SiBE06-708_A Indoor Unit Step Procedure Points 4. Remove the display PCB. Unfasten the 2 hooks of the display PCB. Hooks (R6796) Disconnect the connector [S47] and remove the display PCB. Display PCB [S47] (R6797) 5. Remove the control PCB. Cut the clamp and pull out the all terminals from the terminal Clamp...
Page 158 Indoor Unit SiBE06-708_A Step Procedure Points Remove the 2 screws. Screw Screw (R6800) Remove the control PCB. Refer to page 21 for detail. Fuse 250V 3.15A (R6802) Removal Procedure...
Page 159: Removal Of Vertical Blades
SiBE06-708_A Indoor Unit Removal of Vertical Blades Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the vertical blade (upper). Air outlet ASSY Screw Screw Remove the 2 screws and remove the air outlet ASSY.
Page 160 Indoor Unit SiBE06-708_A Step Procedure Points Remove the 2 screws to remove the swing Swing motor motor. (R6807) Shaft (R6808) 2. Remove the vertical blade Be careful not to wet the (lower). floor with drain. Remove the 2 screws. Remove the drain hose and release the harness of the lower air outlet motor from the...
Page 161 SiBE06-708_A Indoor Unit Step Procedure Points Pull out the drain pan ASSY. Drain pan ASSY (R6811) Remove the motor cover. Lower air outlet motor Remove the 2 screws to remove the lower air outlet motor. Motor cover Remove the damper. Damper (R6813) Remove the sealing...
Page 162: Removal Of Heat Exchanger
Indoor Unit SiBE06-708_A Removal of Heat Exchanger Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Make sure that the refrigerant gas is removed Caution after the pump down When removing or work.
Page 163: Removal Of Fan Rotor / Fan Motor
SiBE06-708_A Indoor Unit Removal of Fan Rotor / Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the fan rotor. Remove the 4 screws and remove the bellmouth.
Page 164 Indoor Unit SiBE06-708_A Step Procedure Points Unfasten the 2 hooks to remove the harness retainer and remove the fan motor. Fan motor Harness retainer Hooks (R11504) 3. Remove the casing. Press the 2 hooks toward the back side and remove Remove 3 screws and Hooks the casing.
Page 165: Outdoor Unit - Rk(X)S25/35F2V1B
SiBE06-708_A Outdoor Unit - RK(X)S25/35F2V1B 2. Outdoor Unit - RK(X)S25/35F2V1B Removal of Outer Panels / Fan Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1.
Page 166 Outdoor Unit - RK(X)S25/35F2V1B SiBE06-708_A Step Procedure Points Remove the 2 screws Top panel and lift the top panel. (R7190) Remove the drip proof Drip proof plate plate. (R7191) Remove the 4 screws and remove the discharge grille. Discharge grille (R7192) The discharge grille has 4 hooks.
Page 167 SiBE06-708_A Outdoor Unit - RK(X)S25/35F2V1B Step Procedure Points Remove the 8 screws of the front panel. Front panel (R7194) Unfasten the hooks. The front panel has 4 hooks. Pull and remove the front panel. Hooks (R7195) Removal Procedure...
Page 168 Outdoor Unit - RK(X)S25/35F2V1B SiBE06-708_A Step Procedure Points 3. Remove the fan motor. The screw has reverse winding. Remove the washer- Nut size: M6 fitted nut of the outdoor fan. 10 mm (R12236) Outdoor fan (R7196) Remove the outdoor When reassembling, align fan.
Page 169 SiBE06-708_A Outdoor Unit - RK(X)S25/35F2V1B Step Procedure Points Disconnect the [S70] connector for the fan motor [S70]. (R7199) Release the fan motor Fan motor lead wire from the hook. lead wire (R7200) Open the hooks and When reassembling, put the release the fan motor fan motor lead wire through lead wire.
Page 170 Outdoor Unit - RK(X)S25/35F2V1B SiBE06-708_A Step Procedure Points Remove the screw and remove the fan motor fixing frame. Fan motor fixing frame (R7204) (R7205) When reassembling, fit the lower hooks into the bottom frame. (R7206) Removal Procedure...
Page 171 SiBE06-708_A Outdoor Unit - RK(X)S25/35F2V1B Step Procedure Points 4. Remove the right side panel. Remove the 2 screws on the rear side. (R7207) Release the outdoor Outdoor temperature thermistor temperature thermistor. (R7208) Lift up the guard net Guard net and remove it. (R7209) Removal Procedure...
Page 172 Outdoor Unit - RK(X)S25/35F2V1B SiBE06-708_A Step Procedure Points Remove the 4 screws on the right side panel. Right side panel (R7210) Remove the screw near the stop valves. (R7211) Removal Procedure...
Page 173 SiBE06-708_A Outdoor Unit - RK(X)S25/35F2V1B Step Procedure Points Unfasten the hook on When reassembling, make the rear side. sure to fit the hook. (R7212) Lift up the right side When reassembling, make panel and remove it. sure to fit the hook. Hook (R7213) Removal Procedure...
Page 174: Removal Of Electrical Box
Outdoor Unit - RK(X)S25/35F2V1B SiBE06-708_A Removal of Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the electrical Preparation box. Remove the panels and disconnect the connector for Disconnect the 2 the fan motor according to...
Page 175 SiBE06-708_A Outdoor Unit - RK(X)S25/35F2V1B Step Procedure Points Disconnect the [S40] connector for the overload protector [S40]. (R7217) Disconnect the [S20] connector for the electronic expansion valve coil [S20]. (R7218) Disconnect the connector for the four way valve coil [S80]. [S80] (R7219) Removal Procedure...
Page 176 Outdoor Unit - RK(X)S25/35F2V1B SiBE06-708_A Step Procedure Points Release the discharge Be careful not to lose the clip pipe thermistor. for the thermistor. Clip (R12279) Discharge pipe thermistor (R0267) Cut the clamp. (R7221) Pull out the outdoor Be careful not to lose the clip heat exchanger for the thermistor.
Page 177 SiBE06-708_A Outdoor Unit - RK(X)S25/35F2V1B Step Procedure Points Lift and remove the Electrical Box electrical box. (R7223) Removal Procedure...
Page 178: Removal Of Pcb
Outdoor Unit - RK(X)S25/35F2V1B SiBE06-708_A Removal of PCB Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Feature of the main You can remove the main PCB when you disconnect the lead wires on the terminal board without removing the electrical box.
Page 179 SiBE06-708_A Outdoor Unit - RK(X)S25/35F2V1B Step Procedure Points Remove the 4 screws. Screw (R7258) Unfasten the 3 hooks on the upper side. Lift and pull out the main PCB. (R7259) Refer to page 23 for detail. [S40] [S30] [S90] [S20]: electronic expansion valve coil [S30]: compressor [S40]: overload protector...
Page 180: Removal Of Reactor / Partition Plate
Outdoor Unit - RK(X)S25/35F2V1B SiBE06-708_A Removal of Reactor / Partition Plate Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the reactor. Preparation Reactor Remove the outer panels Remove the screw and according to the “Removal of remove the reactor.
Page 181 SiBE06-708_A Outdoor Unit - RK(X)S25/35F2V1B Step Procedure Points The partition plate has a hook on the lower side. Lift and pull the partition plate to remove. (R7227) When reassembling, fit the lower hook into the bottom frame. Hook (R7228) Removal Procedure...
Page 182: Removal Of Sound Blanket
Outdoor Unit - RK(X)S25/35F2V1B SiBE06-708_A Removal of Sound Blanket Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the sound Preparation blanket (top). Remove the outer panels according to the “Removal of Outer Panels / Fan Motor”.
Page 183: Removal Of Four Way Valve
SiBE06-708_A Outdoor Unit - RK(X)S25/35F2V1B Removal of Four Way Valve Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Pull out the electronic expansion valve coil. Electronic expansion valve coil...
Page 184 Outdoor Unit - RK(X)S25/35F2V1B SiBE06-708_A Step Procedure Points Remove the screw and Four way valve coil remove the four way Warning valve coil. Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine.
Page 185 SiBE06-708_A Outdoor Unit - RK(X)S25/35F2V1B Step Procedure Points Note: Do not use a metal saw for cutting pipes by all means because the sawdust comes into the circuit. When withdrawing the pipes, be careful not to pinch them firmly with pliers. The pipes may get deformed.
Page 186: Removal Of Compressor
Outdoor Unit - RK(X)S25/35F2V1B SiBE06-708_A Removal of Compressor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the 2 nuts of the compressor. Warning Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine.
Page 187 SiBE06-708_A Outdoor Unit - RK(X)S25/35F2V1B Step Procedure Points Heat up the brazed part Note: of the suction side and Do not use a metal saw for disconnect. cutting pipes by all means because the sawdust comes into the circuit. When withdrawing the pipes, be careful not to pinch them firmly with pliers.
Page 188: Outdoor Unit - Rk(X)S25/35G2V1B
Outdoor Unit - RK(X)S25/35G2V1B SiBE06-708_A 3. Outdoor Unit - RK(X)S25/35G2V1B Removal of Outer Panels / Fan Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1.
Page 189 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B Step Procedure Points Remove the 2 screws Top panel and lift the top panel. (R7190) Remove the drip proof Drip proof plate plate. (R7191) Remove the 4 screws and remove the discharge grille. Discharge grille (R7192) The discharge grille has 4 hooks.
Page 190 Outdoor Unit - RK(X)S25/35G2V1B SiBE06-708_A Step Procedure Points Remove the 8 screws of the front panel. Front panel (R7194) Unfasten the hooks. The front panel has 4 hooks. Pull and remove the front panel. Hooks (R7195) Removal Procedure...
Page 191 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B Step Procedure Points 3. Remove the fan motor. The screw has reverse winding. Remove the washer- Nut size: M6 fitted nut of the outdoor fan. 10 mm (R12236) Outdoor fan (R7196) Remove the outdoor When reassembling, align fan.
Page 192 Outdoor Unit - RK(X)S25/35G2V1B SiBE06-708_A Step Procedure Points Disconnect the [S70] connector for the fan motor [S70]. (R9332) Release the fan motor Fan motor lead wire from the hook. lead wire (R7200) Open the hooks and When reassembling, put the release the fan motor fan motor lead wire through lead wire.
Page 193 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B Step Procedure Points Remove the screw and remove the fan motor fixing frame. Fan motor fixing frame (R7204) (R7205) When reassembling, fit the lower hooks into the bottom frame. (R7206) Removal Procedure...
Page 194 Outdoor Unit - RK(X)S25/35G2V1B SiBE06-708_A Step Procedure Points 4. Remove the right side panel. Remove the 2 screws on the rear side. (R7207) Release the outdoor Outdoor temperature thermistor temperature thermistor. (R7208) Lift up the guard net Guard net and remove it. (R7209) Removal Procedure...
Page 195 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B Step Procedure Points Remove the 4 screws on the right side panel. Right side panel (R7210) Remove the screw near the stop valves. (R7211) Removal Procedure...
Page 196 Outdoor Unit - RK(X)S25/35G2V1B SiBE06-708_A Step Procedure Points Unfasten the hook on When reassembling, make the rear side. sure to fit the hook. (R7212) Lift up the right side When reassembling, make panel and remove it. sure to fit the hook. Hook (R7213) Removal Procedure...
Page 197: Removal Of Electrical Box
SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B Removal of Electrical Box Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Disconnect the 2 Preparation connectors for the Remove the panels and reactor.
Page 198 Outdoor Unit - RK(X)S25/35G2V1B SiBE06-708_A Step Procedure Points Disconnect the [S90] [S50] connectors for the magnetic relay [S50] and for the thermistors [S90]. (R9341) Disconnect the [S40] [S10] connectors for the filter PCB [S10] and for the overload protector [S40]. (R9342) Disconnect the [S80] [S20]...
Page 199 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B Step Procedure Points Disconnect the [HN3] [HL3] connectors for the filter PCB [HL3] [HN3]. (R9344) Remove the wire Wire harness harness for standby electricity saving. (R9345) Cut the clamps at 2 locations. (R9346) Removal Procedure...
Page 200 Outdoor Unit - RK(X)S25/35G2V1B SiBE06-708_A Step Procedure Points Lift and remove the Electrical box electrical box. (R9348) Removal Procedure...
Page 201: Removal Of Thermistors
SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B Removal of Thermistors Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Release the discharge Be careful not to lose the clip pipe thermistor.
Page 202 Outdoor Unit - RK(X)S25/35G2V1B SiBE06-708_A Step Procedure Points Feature of the thermistors (R9356) Removal Procedure...
Page 203: Removal Of Pcb
SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B Removal of PCB Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the main PCB. You can remove the main PCB when you disconnect Feature of the main the lead wires on the...
Page 204 Outdoor Unit - RK(X)S25/35G2V1B SiBE06-708_A Step Procedure Points Remove the 4 screws. Screws (R9359) Unfasten the 3 hooks on the upper side. (R9360) Lift and pull out the main PCB. (R9361) Removal Procedure...
Page 205 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B Step Procedure Points Feature of the main Refer to page 25 for detail. [S30] [S10] [S40] [S90] [S50] [S10] [HL3] [HN3]: filter PCB [S20]: electronic expansion valve coil [S30]: compressor [S40]: overload protector [S50]: magnetic relay [S70]: fan motor [S70] [S80]: four way valve coil...
Page 206: Removal Of Reactor / Partition Plate
Outdoor Unit - RK(X)S25/35G2V1B SiBE06-708_A Removal of Reactor / Partition Plate Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the reactor. Preparation Reactor Remove the outer panels Remove the screw and according to the “Removal of remove the reactor.
Page 207 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B Step Procedure Points The partition plate has a hook on the lower side. Lift and pull the partition plate to remove. (R7227) When reassembling, fit the lower hook into the bottom frame. Hook (R7228) Removal Procedure...
Page 208: Removal Of Sound Blanket
Outdoor Unit - RK(X)S25/35G2V1B SiBE06-708_A Removal of Sound Blanket Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the sound Preparation blanket (top). Remove the outer panels according to the “Removal of Outer Panels / Fan Motor”.
Page 209: Removal Of Four Way Valve
SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B Removal of Four Way Valve Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Pull out the electronic expansion valve coil. Electronic expansion valve coil...
Page 210 Outdoor Unit - RK(X)S25/35G2V1B SiBE06-708_A Step Procedure Points Remove the screw and Four way valve coil remove the four way Warning valve coil. Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine.
Page 211 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B Step Procedure Points Note: Do not use a metal saw for cutting pipes by all means because the sawdust comes into the circuit. When withdrawing the pipes, be careful not to pinch them firmly with pliers. The pipes may get deformed.
Page 212: Removal Of Compressor
Outdoor Unit - RK(X)S25/35G2V1B SiBE06-708_A Removal of Compressor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the 2 nuts of the compressor. Warning Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine.
Page 213 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B Step Procedure Points Heat up the brazed part Note: of the suction side and Do not use a metal saw for disconnect. cutting pipes by all means because the sawdust comes into the circuit. When withdrawing the pipes, be careful not to pinch them firmly with pliers.
Page 214: Outdoor Unit - Rk(X)S25/35G2V1B9
Outdoor Unit - RK(X)S25/35G2V1B9 SiBE06-708_A 4. Outdoor Unit - RK(X)S25/35G2V1B9 Removal of Outer Panels / Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Appearance features (R7186) Take care not to cut your finger by the fins of the...
Page 215 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B9 Step Procedure Points Remove the 2 screws Top panel and lift the top panel. (R7190) Remove the drip proof Drip proof plate plate. (R7191) Remove the 4 screws and remove the discharge grille. Discharge grille (R7192) The discharge grille has 4 hooks.
Page 216 Outdoor Unit - RK(X)S25/35G2V1B9 SiBE06-708_A Step Procedure Points Remove the 8 screws of the front panel. (R11825) Front panel Unfasten the hooks. The front panel has 4 hooks. Pull and remove the front panel. Hooks (R11826) Removal Procedure...
Page 217 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B9 Step Procedure Points 3. Remove the fan motor. The screw has reverse winding. Remove the washer- Nut size: M6 fitted nut of the outdoor fan. 10 mm (R12236) Outdoor fan (R11827) Remove the outdoor When reassembling, align fan.
Page 218 Outdoor Unit - RK(X)S25/35G2V1B9 SiBE06-708_A Step Procedure Points Cut the clamp. (R11830) Disconnect the connector for the fan motor [S70]. (R11831) [S70] Release the fan motor Fan motor lead wire from the hook. lead wire (R11832) Removal Procedure...
Page 219 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B9 Step Procedure Points Remove the screw and remove the fan motor fixing frame. Fan motor fixing frame (R11833) (R12314) When reassembling, fit the lower hooks into the bottom frame. (R7206) Removal Procedure...
Page 220 Outdoor Unit - RK(X)S25/35G2V1B9 SiBE06-708_A Step Procedure Points Open the hooks and When reassembling, put the release the fan motor fan motor lead wire through lead wire. the back of the fan motor (so as not to be entangled with the outdoor fan). (R11835) Lead wire Outdoor fan...
Page 221 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B9 Step Procedure Points Remove the 4 screws Right side panel on the right side panel. (R12163) Remove the screw near the stop valves. (R11839) Unfasten the hook on When reassembling, make the rear side. sure to fit the hook. (R11842) Removal Procedure...
Page 222 Outdoor Unit - RK(X)S25/35G2V1B9 SiBE06-708_A Step Procedure Points Lift up the right side When reassembling, make panel and remove it. sure to fit the hook. Hook (R12272) Lift up the guard net Guard net and remove it. (R11841) Removal Procedure...
Page 223: Removal Of Electrical Box
SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B9 Removal of Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Disconnect the Preparation connector for the Remove the panels and overload protector disconnect the connector for [S40].
Page 224 Outdoor Unit - RK(X)S25/35G2V1B9 SiBE06-708_A Step Procedure Points Disconnect the relay connector for the compressor. (R11845) Disconnect the connector for the electronic expansion valve coil [S20]. [S20] (R11847) Cut the clamp. (R11850) Pull out the outdoor Be careful not to lose the clip heat exchanger for the thermistor.
Page 225 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B9 Step Procedure Points Release the discharge Be careful not to lose the clip pipe thermistor. for the thermistor. Clip (R12279) Discharge pipe thermistor (R11849) Lift and remove the Electrical Box electrical box. (R11852) Removal Procedure...
Page 226: Removal Of Pcb
Outdoor Unit - RK(X)S25/35G2V1B9 SiBE06-708_A Removal of PCB Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the main PCB. You can remove the main PCB when you disconnect Feature of the main the lead wires on the...
Page 227 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B9 Step Procedure Points Pull out the forced Be careful of a sharp operation button PCB. protrusion at the back of the Disconnect the forced operation button connector [S110] to PCB. remove the forced operation button PCB. Forced operation button PCB (R11856) Disconnect the relay...
Page 228 Outdoor Unit - RK(X)S25/35G2V1B9 SiBE06-708_A Step Procedure Points Release the harness. (R11859) Cut the clamps at the 2 locations. (R11860) Disconnect the connector for the filter PCB [S10]. [S10] (R11861) Removal Procedure...
Page 229 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B9 Step Procedure Points Disconnect the connectors for the [S100] magnetic relay [S50] and for the forced operation button PCB [S100]. [S50] (R11862) Disconnect the connector for the filter [HN3] PCB [HL3] [HN3]. [HL3] (R11863) Release the harnesses from the hook.
Page 230 Outdoor Unit - RK(X)S25/35G2V1B9 SiBE06-708_A Step Procedure Points Remove the 6 screws. (R11866) Unfasten the 4 hooks and remove the main PCB. (R11867) Refer to page 27 for detail. [S50] [S100] [S10] [HL3] [HN3]: filter PCB [S20]: electronic expansion [HL3] valve coil [HN3] [S40]: overload protector...
Page 231 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B9 Step Procedure Points 2. Remove the filter PCB. Release the harnesses from the hook. Filter PCB (R11869) Cut the clamp. (R11871) Release the harnesses from the hook. (R11872) Removal Procedure...
Page 232 Outdoor Unit - RK(X)S25/35G2V1B9 SiBE06-708_A Step Procedure Points Release the harnesses from the hooks. (R11873) Remove the screw. (R11874) Unfasten the 2 hooks. Filter PCB (R11876) Lift and pull out the filter PCB. (R11877) Removal Procedure...
Page 233 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B9 Step Procedure Points Feature of the filter Refer to page 27 for detail. (R11878) Removal Procedure...
Page 234: Removal Of Reactor / Partition Plate
Outdoor Unit - RK(X)S25/35G2V1B9 SiBE06-708_A Removal of Reactor / Partition Plate Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the reactor. Preparation Reactor Remove the outer panels Remove the screw and according to the “Removal of remove the reactor.
Page 235 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B9 Step Procedure Points The partition plate has a hook on the lower side. Lift and pull the partition plate to remove. (R12280) When reassembling, fit the lower hook into the bottom frame. (R11883) Removal Procedure...
Page 236: Removal Of Sound Blanket
Outdoor Unit - RK(X)S25/35G2V1B9 SiBE06-708_A Removal of Sound Blanket Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the sound Since the piping ports are blanket (top). torn easily, remove the sound blanket carefully.
Page 237 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B9 Step Procedure Points Pull the sound blanket (inner) out. Sound blanket (inner) (R11887) Pull the sound blanket (bottom) out. Sound blanket (bottom) (R11888) Removal Procedure...
Page 238: Removal Of Four Way Valve
Outdoor Unit - RK(X)S25/35G2V1B9 SiBE06-708_A Removal of Four Way Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Pull out the electronic expansion valve coil. Electronic expansion valve coil (R7233)
Page 239 SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B9 Step Procedure Points Remove the screw and Four way valve coil remove the four way Warning valve coil. Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine.
Page 240 Outdoor Unit - RK(X)S25/35G2V1B9 SiBE06-708_A Step Procedure Points Note: Do not use a metal saw for cutting pipes by all means because the sawdust comes into the circuit. When withdrawing the pipes, be careful not to pinch them firmly with pliers. The pipes may get deformed.
Page 241: Removal Of Compressor
SiBE06-708_A Outdoor Unit - RK(X)S25/35G2V1B9 Removal of Compressor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the 2 nuts of the compressor. Warning Be careful not to get yourself burnt with pipes and other parts that are heated by the gas brazing machine.
Page 242 Outdoor Unit - RK(X)S25/35G2V1B9 SiBE06-708_A Step Procedure Points Heat up the brazed part Note: of the suction side and Do not use a metal saw for disconnect. cutting pipes by all means because the sawdust comes into the circuit. When withdrawing the pipes, be careful not to pinch them firmly with pliers.
Page 243: Outdoor Unit - Rk(X)S50F2V1B, Rk(X)S50G2V1B
SiBE06-708_A Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B 5. Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B Removal of Outer Panels Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the panels. Remove the 4 screws Top panel and lift the top panel.
Page 244 Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B SiBE06-708_A Step Procedure Points The discharge grille has 4 hooks. Remove the 6 screws of the front panel. Front panel (R12284) Push the front panel and lift the shield plate Shield plate to unfasten the hooks. 1 Push the front panel.
Page 245 SiBE06-708_A Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B Step Procedure Points Unfasten the left side Lift the front panel while hooks, and then the pushing the left side panel right side hook. inwards. Remove the front panel. Lift the front panel and unfasten the right side hook.
Page 246 Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B SiBE06-708_A Step Procedure Points 2. Remove the stop valve cover. Remove the screw of the stop valve cover. Stop valve cover (R5252) Pull down the stop valve cover to unfasten the hooks and remove The stop valve cover has 6 hooks.
Page 247: Removal Of Outdoor Fan / Fan Motor
SiBE06-708_A Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B Removal of Outdoor Fan / Fan Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the electrical box Preparation cover.
Page 248 Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B SiBE06-708_A Step Procedure Points (R5258) 2. Remove the fan motor. Disconnect the connector for the fan [S70] motor [S70]. (R5259) Release the fan motor lead wire from the 7 hooks. Fan motor lead wire (R5260) Removal Procedure...
Page 249 SiBE06-708_A Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B Step Procedure Points Remove the washer- The screw has reverse fitted nut of the outdoor winding. fan. Nut size: M6 10 mm (R12236) Outdoor fan (R5262) When reassembling, align mark of the outdoor fan with D-cut section of the motor shaft.
Page 250 Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B SiBE06-708_A Step Procedure Points Release the fan motor When reassembling, put the lead wire from the 2 fan motor lead wire through hooks and pull the fan the back of the fan motor (so motor out. as not to be entangled with the outdoor fan).
Page 251: Removal Of Electrical Box
SiBE06-708_A Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B Removal of Electrical Box Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the 2 screws Preparation of the shield plate. Remove the top panel and the front panel according to the “Removal of Outer...
Page 252 Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B SiBE06-708_A Step Procedure Points Disconnect the 2 earth wires. Earth wires (R5269) Remove the 3 screws of the right side panel. Right side panel (R5270) Remove the screw of the electrical box. Removal Procedure...
Page 253 SiBE06-708_A Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B Step Procedure Points Unfasten the hooks and When reassembling, insert remove the right side the 2 hooks of the lower part panel. and the 1 hook of the upper Hook back. (R5272) Hooks (R5273) Disconnect the connectors of the front [S40] [S20]...
Page 254 Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B SiBE06-708_A Step Procedure Points Release the clamp of the compressor relay harness with pliers. Compressor relay harness (R5277) Detach the clamp and release the thermistor Clamp Hook lead wires from the hook. Thermistor lead wire (R5278) Remove the screw.
Page 255 SiBE06-708_A Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B Step Procedure Points Release the harness of the outdoor temperature thermistor from the hook. (R9403) Lift and remove the electrical box. Electrical box (R5279) Removal Procedure...
Page 256: Removal Of Pcb
Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B SiBE06-708_A Removal of PCB Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Disconnect the Preparation [S102] connectors from the [S52] Remove the electrical box service monitor PCB according to the “Removal of...
Page 257 SiBE06-708_A Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B Step Procedure Points Unfasten the hook on the right. Open the terminal board. Disconnect the 1: Black harnesses. 2: White 3: Red L1: Black L2: Brown N1: White N2: Blue (R5285) Disconnect the 2 connectors for the reactor [HR1] [HR2].
Page 258 Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B SiBE06-708_A Step Procedure Points Remove the 3 screws of the main PCB. Main PCB (R5287) Unfasten the 4 hooks. Hooks (R5288) Lift up and remove the Refer to page 29 for detail. main PCB. Main PCB (R5289) Removal Procedure...
Page 259: Removal Of Sound Blanket / Thermistors
SiBE06-708_A Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B Removal of Sound Blanket / Thermistors Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the sound blanket (back). Sound blanket (back) Remove the sound...
Page 260 Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B SiBE06-708_A Step Procedure Points Remove the sound Sound blanket blanket (top lower). (top lower) (R11398) Remove the sound blanket (inner). Sound blanket (inner) (R5296) Release the discharge Be careful not to lose the clip pipe thermistor. for the thermistor.
Page 261: Removal Of Four Way Valve
SiBE06-708_A Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B Removal of Four Way Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the screw and remove the four way Warning valve coil.
Page 262: Removal Of Electronic Expansion Valve
Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B SiBE06-708_A Removal of Electronic Expansion Valve Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Pull out the electronic expansion valve coil. Electronic expansion valve coil (R2737) Remove the sheets of...
Page 263: Removal Of Compressor
SiBE06-708_A Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B Removal of Compressor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the terminal cover. Terminal cover (R5302) Disconnect the lead wires of the compressor.
Page 264 Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B SiBE06-708_A Step Procedure Points Release the clamp with pliers to detach the compressor lead wires. Remove the putty. Before working, make sure that the refrigerant Warning gas is empty in the circuit. Be careful not to get yourself Be sure to apply nitrogen burnt with the pipes and other replacement when...
Page 265 SiBE06-708_A Outdoor Unit - RK(X)S50F2V1B, RK(X)S50G2V1B Step Procedure Points Remove the 2 nuts of Cautions for restoration the compressor. 1. Restore the piping by non- oxidation brazing. 2. It is required to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat.
Page 266: Part 8 Trial Operation And Field Settings
SiBE06-708_A Part 8 Trial Operation and Field Settings 1. Trial Operation ..................256 2. Field Settings ..................257 2.1 Model Type Setting ................257 2.2 When 2 Units are Installed in 1 Room..........258 2.3 Standby Electricity Saving..............259 2.4 Facility Setting Jumper and Switch (cooling at low outdoor temperature)............260 2.5 Jumper and Switch Settings..............261 3.
Page 267: Trial Operation
SiBE06-708_A Trial Operation 1. Trial Operation Outline 1. Measure the supply voltage and make sure that it falls in the specified range. 2. Trial operation should be carried out in either cooling or heating mode. 3. Carry out the trial operation in accordance with the operation manual to ensure that all functions and parts, such as louver movement, are working properly.
Page 268: Field Settings
Field Settings SiBE06-708_A 2. Field Settings Model Type Setting ARC452A1 This remote controller is common to the heat pump model and cooling only model. Use the DIP switch on the remote controller to set the heat pump model or cooling only model. Make the setting as shown in the illustration.
Page 269: When 2 Units Are Installed In 1 Room
SiBE06-708_A Field Settings When 2 Units are Installed in 1 Room When 2 indoor units are installed in 1 room, 1 of the 2 pairs of indoor unit and wireless remote controller can be set for different address. Both the indoor unit PCB and the wireless remote controller need alteration. How to set the different addresses 1) Remove the front grille.
Page 270: Standby Electricity Saving
Field Settings SiBE06-708_A Standby Electricity Saving Outline RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9 Models Only This function turns power supply OFF to the outdoor unit and sets the indoor unit into energy- saving mode, thus reducing the power consumption of the air conditioner. Detail Following procedure is required for turning ON the function.
Page 271: Facility Setting Jumper And Switch (Cooling At Low Outdoor Temperature)
SiBE06-708_A Field Settings Facility Setting Jumper and Switch (cooling at low outdoor temperature) Outline For Cooling Only Model 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 or turning on switch on the outdoor unit PCB.
Page 272: Jumper And Switch Settings
Field Settings SiBE06-708_A RKS50F2V1B, RKS50G2V1B S102 LED-A Turn on the switch SW4-B. (R12186) 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. Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and off when using facility settings.
Page 273: Application Of Silicon Grease To A Power Transistor And A Diode Bridge
SiBE06-708_A Application of Silicon Grease to a Power Transistor and a Diode Bridge 3. Application of Silicon Grease to a Power Transistor and a Diode Bridge Applicable All outdoor units using inverter type compressor for room air conditioner. Models When the printed circuit board (PCB) of an outdoor unit is replaced, it is required that silicon grease (*1) is certainly applied to the heat radiation part (the contact point to the radiation fin) of the power transistor and diode bridge.
Page 274: Part 9 Appendix
SiBE06-708_A Part 9 Appendix 1. Piping Diagrams..................264 1.1 Indoor Unit....................264 1.2 Outdoor Unit ..................265 2. Wiring Diagrams..................268 2.1 Indoor Unit....................268 2.2 Outdoor Unit ..................269 Appendix...
Page 275: Piping Diagrams
SiBE06-708_A Piping Diagrams 1. Piping Diagrams Indoor Unit FVXS25/35FV1B FVXS50FV1B INDOOR UNIT INDOOR UNIT MUFFLER ASSY HEAT EXCHANGER MUFFLER ASSY HEAT EXCHANGER 6.4CuT 7.0CuT 6.4CuT 7.0CuT 6.4CuT 6.4CuT 6.4CuT THERMISTOR THERMISTOR ON HEAT EXCH. ON HEAT EXCH. 6.4CuT 6.4CuT FIELD PIPING FAN MOTOR 6.4CuT TURBO FAN...
Page 276: Outdoor Unit
Piping Diagrams SiBE06-708_A Outdoor Unit RKS25/35F2V1B OUTDOOR UNIT OUTDOOR TEMPERATURE HEAT EXCHANGER 7.0CuT THERMISTOR 7.0CuT HEAT EXCHANGER MOTOR OPERATED THERMISTOR VALVE 4.8CuT 6.4CuT 6.4CuT 4.8CuT MUFFLER MUFFLER WITH WITH FILTER FILTER PROPELLER FAN 9.5CuT MUFFLER WITH FILTER FOUR WAY FIELD PIPING VALVE NORMALLY : OFF ( 6.4CuT )
Page 277 SiBE06-708_A Piping Diagrams RKS50F2V1B, RKS50G2V1B OUTDOOR UNIT 7.9CuT HEAT EXCHANGER OUTDOOR AIR TEMPERATURE THERMISTOR 7.9CuT 7.9CuT 7.9CuT 12.7CuT 7.9CuT CAPILLARY TUBE 1 7.9CuT 4.0CuT MUFFLER 7.9CuT WITH 7.9CuT 4.0CuT 7.9CuT REFRIGERANT FLOW FILTER CAPILLARY TUBE 2 6.4CuT 7.9CuT COOLING CAPILLARY TUBE 3 4.0CuT HEAT 4.0CuT...
Page 278 Piping Diagrams SiBE06-708_A RXS25/35G2V1B, RXS25/35G2V1B9 OUTDOOR UNIT OUTDOOR TEMPERATURE HEAT EXCHANGER THERMISTOR 7.0CuT 7.0CuT HEAT EXCHANGER THERMISTOR MOTOR OPERATED VALVE 4.8CuT 6.4CuT 6.4CuT 4.8CuT MUFFLER MUFFLER WITH WITH FILTER FILTER PROPELLER FAN 9.5CuT MUFFLER WITH FILTER FOUR WAY VALVE FIELD PIPING ON:HEATING (6.4CuT) LIQUID STOP...
Page 279: Wiring Diagrams
SiBE06-708_A Wiring Diagrams 2. Wiring Diagrams Indoor Unit FVXS25/35/50FV1B PCB3 PCB2 → RECTIFIER S2W(4) 3.15A outdoor GRN/YLW FIELD WIRING. WIRELESS TRANSMISSION REMOTE CAUTION CONTROLLER CIRCUIT NOTE THAT OPERATION WILL PCB4 RESTART AUTOMATICALLY IF SIGNAL THE MAIN POWER SUPPLY IS RECEIVER TURNED OFF AND THEN BACK ON AGAIN.
Page 280: Outdoor Unit
Wiring Diagrams SiBE06-708_A Outdoor Unit RK(X)S25/35F2V1B R12T t ° C100 FIELD WIRING. indoor PCB1 MRM20 IPM1 MRM10 3.15A IC11 3.15A PCB2 MRCW outdoor NOTE 1. REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS. t ° t ° t ° C74 , C75 IN CASE OF IN CASE OF C94 , C95 , C100...
Page 281 SiBE06-708_A Wiring Diagrams RK(X)S25/35G2V1B9 FIELD WIRING. indoor MRM20 IPM1 MRM10 C119 MR30 3.15A PCB2 3.15A W V U IPM2 MR30_A MR30_B MRCW S100 PCB1 X11A S80 1 10 11 outdoor NOTE 1.REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS. t˚ t˚...
Page 282 Wiring Diagrams SiBE06-708_A RXS50F2V1B, RXS50G2V1B X12A MRM20 3.15A POWER SUPPLY MRM10 6(P) + + + 7(N) X11A TO INDOOR UNIT 3.15A PCB1 SHEET METAL 1 S51 S101 indoor FIELD WIRING t° t° t° S102 PCB2 (OUTDOOR)(DISCHARGE) LED A (CONDENSER) outdoor Z1C~Z5C : FERRITE CORE X1M, X2M...
Page 283 Daikin Industries, Ltd.’s products are manufactured for export to numerous countries throughout the Warning world. Daikin Industries, Ltd. does not have control over which products are exported to and used in a particular country. Prior to purchase, please therefore 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.

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