Daikin FLXS-BAVMB Service Manual

Floor / ceiling suspended dual type ba-series

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Technical data manual (17 pages)

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Page 1 SiBE05-722_B Service Manual Inverter Pair Floor / Ceiling Suspended Dual Type BA-Series [Applied Models] ● Inverter Pair : Cooling Only ● Inverter Pair : Heat Pump...
Page 2 SiBE05-722_B Inverter Pair Floor / Ceiling Suspended Dual Type BA-Series Cooling Only Indoor Unit FLKS25BAVMB FLKS35BAVMB Outdoor Unit RKS25E2V1B RKS25G2V1B RKS25G2V1B9 RKS35E2V1B RKS35G2V1B RKS35G2V1B9 Heat Pump Indoor Unit FLXS25BAVMB FLXS35BAVMB Outdoor Unit RXS25E2V1B RXS25G2V1B RXS25G2V1B9 RXS25J2V1B RXS35E2V1B RXS35G2V1B RXS35G2V1B9 RXS35J2V1B Table of Contents...
Page 3: Table Of Contents
SiBE05-722_B 1. Introduction .................... vi 1.1 Safety Cautions ..................vi 1.2 Used Icons ....................x Part 1 List of Functions ..............1 1. Functions....................2 Part 2 Specifications ..............6 1. Specifications ..................7 1.1 Cooling Only.....................7 1.2 Heat Pump .....................10 Part 3 Printed Circuit Board Connector Wiring Diagram ... 14 1.
Page 4 SiBE05-722_B Part 5 Operation Manual ............. 50 1. System Configuration................51 2. Operation Manual..................52 2.1 Remote Controller ..................52 2.2 AUTO · DRY · COOL · HEAT · FAN Operation ........53 2.3 Adjusting the Airflow Direction..............55 2.4 POWERFUL Operation ................57 2.5 OUTDOOR UNIT QUIET Operation............58 2.6 HOME LEAVE Operation ...............59 2.7 TIMER Operation ...................61 Part 6 Service Diagnosis.............
Page 5 SiBE05-722_B 5.7 Power Supply Waveforms Check............108 5.8 Inverter Units Refrigerant System Check ..........108 5.9 Power Module Check ................109 5.10 “Inverter Checker” Check ..............110 5.11 Rotation Pulse Check on the Outdoor Unit PCB ........112 5.12 Hall IC Check ..................113 5.13 Main Circuit Short Check..............114 Part 7 Removal Procedure ............
Page 6 SiBE05-722_B 4. Field Settings ..................215 4.1 When 2 Units are Installed in 1 Room..........215 4.2 Standby Electricity Saving..............216 4.3 Facility Setting Jumper (cooling at low outdoor temperature) ....217 4.4 Jumper and Switch Settings..............218 5. Application of Silicon Grease to a Power Transistor and a Diode Bridge ................219 Part 9 Appendix.................
Page 7: Introduction
SiBE05-722_B 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 SiBE05-722_B 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 SiBE05-722_B 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 SiBE05-722_B 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
SiBE05-722_B 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
SiBE05-722_B Part 1 List of Functions 1. Functions....................2 List of Functions...
Page 13: Functions
SiBE05-722_B Functions 1. Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter Function Clean –10 –10 Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter ★ –15 Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
Page 14 Functions SiBE05-722_B Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter Function Clean –10 –10 Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter ★ –15 Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) — —...
Page 15 SiBE05-722_B Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter Function Clean –10 –10 Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter ★ –15 Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) — —...
Page 16 Functions SiBE05-722_B Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter Function Clean –10 Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter –15 Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) — Deodorizing Function PAM Control Titanium Apatite Photocatalytic —...
Page 17: Part 2 Specifications
SiBE05-722_B Part 2 Specifications 1. Specifications ..................7 1.1 Cooling Only.....................7 1.2 Heat Pump .....................10 Specifications...
Page 18: Specifications
Specifications SiBE05-722_B 1. Specifications Cooling Only 50 Hz, 220 - 230 - 240 V Indoor Unit FLKS25BAVMB FLKS35BAVMB Model Outdoor Unit RKS25E2V1B RKS35E2V1B 2.5 (1.2 ~ 3.0) 3.5 (1.2 ~ 3.8) Capacity Rated (Min. ~ Max.) Btu/h 8,500 (4,100 ~ 10,200) 11,900 (4,100 ~ 13,000) kcal/h 2,150 (1,030 ~ 2,580)
Page 19 SiBE05-722_B Specifications 50 Hz, 220 - 230 - 240 V Indoor Unit FLKS25BAVMB FLKS35BAVMB Model Outdoor Unit RKS25G2V1B RKS35G2V1B 2.5 (1.2 ~ 3.0) 3.5 (1.2 ~ 3.8) Capacity Rated (Min. ~ Max.) Btu/h 8,500 (4,100 ~ 10,200) 11,900 (4,100 ~ 13,000) kcal/h 2,150 (1,030 ~ 2,580) 3,010 (1,030 ~ 3,270)
Page 20 Specifications SiBE05-722_B 50 Hz, 220 - 230 - 240 V Indoor Unit FLKS25BAVMB FLKS35BAVMB Model Outdoor Unit RKS25G2V1B9 RKS35G2V1B9 2.5 (1.2 ~ 3.0) 3.5 (1.2 ~ 3.8) Capacity Rated (Min. ~ Max.) Btu/h 8,500 (4,100 ~ 10,200) 11,900 (4,100 ~ 13,000) kcal/h 2,150 (1,030 ~ 2,580) 3,010 (1,030 ~ 3,270)
Page 21: Heat Pump
SiBE05-722_B Specifications Heat Pump 50 Hz, 220 - 230 - 240 V Indoor Unit FLXS25BAVMB FLXS35BAVMB Model RXS25E2V1B RXS35E2V1B Outdoor Unit Cooling Heating Cooling Heating 2.5 (1.2 ~ 3.0) 3.4 (1.2 ~ 4.5) 3.5 (1.2 ~ 3.8) 4.0 (1.2 ~ 5.0) Capacity Rated (Min.
Page 22 Specifications SiBE05-722_B 50 Hz, 220 - 230 - 240 V Indoor Unit FLXS25BAVMB FLXS35BAVMB Model RXS25G2V1B RXS35G2V1B Outdoor Unit Cooling Heating Cooling Heating 2.5 (1.2 ~ 3.0) 3.4 (1.2 ~ 4.5) 3.5 (1.2 ~ 3.8) 4.0 (1.2 ~ 5.0) Capacity Rated (Min. ~ Max.) Btu/h 8,500 (4,100 ~ 10,200) 11,600 (4,100 ~ 15,400)
Page 23 SiBE05-722_B Specifications 50 Hz, 220 - 230 - 240 V Indoor Unit FLXS25BAVMB FLXS35BAVMB Model RXS25G2V1B9 RXS35G2V1B9 Outdoor Unit Cooling Heating Cooling Heating 2.5 (1.2 ~ 3.0) 3.4 (1.2 ~ 4.5) 3.5 (1.2 ~ 3.8) 4.0 (1.2 ~ 5.0) Capacity Rated (Min. ~ Max.) Btu/h 8,500 (4,100 ~ 10,200) 11,600 (4,100 ~ 15,400)
Page 24 Specifications SiBE05-722_B 50 Hz, 220 - 230 - 240 V Indoor Unit FLXS25BAVMB FLXS35BAVMB Model RXS25J2V1B RXS35J2V1B Outdoor Unit Cooling Heating Cooling Heating 2.5 (1.2 ~ 3.0) 3.4 (1.2 ~ 4.5) 3.5 (1.2 ~ 3.8) 4.0 (1.4 ~ 5.0) Capacity Rated (Min. ~ Max.) Btu/h 8,500 (4,100 ~ 10,200) 11,600 (4,100 ~ 15,400)
Page 25: Part 3 Printed Circuit Board Connector Wiring Diagram
SiBE05-722_B Part 3 Printed Circuit Board Connector Wiring Diagram 1. Indoor Unit.....................15 2. Outdoor Unit..................17 2.1 RK(X)S25/35E2V1B ................17 2.2 RK(X)S25/35G2V1B................19 2.3 RK(X)S25/35G2V1B9, RXS25/35J2V1B..........21 Printed Circuit Board Connector Wiring Diagram...
Page 26: Indoor Unit
Indoor Unit SiBE05-722_B 1. Indoor Unit Connectors and PCB (1): Control PCB Other Parts 1) S6 Connector for swing motor (horizontal swing) 2) S7 Connector for AC fan motor 3) S21 Connector for centralized control (HA) 4) S24 Connector for display PCB 5) S26 Connector for signal receiver PCB 6) S32...
Page 27 SiBE05-722_B Indoor Unit PCB Detail PCB (1) : Control PCB LED A 2P084352-3 PCB (2) : Power Supply PCB 2P084361-1 PCB (3) : Display PCB PCB (4) : Signal Receiver PCB LED3 LED2 LED1 EX511 REV 12 2P084377-5 PHOTO 2P084377- S31 (RTH) 2P084377-5 Printed Circuit Board Connector Wiring Diagram...
Page 28: Outdoor Unit
Outdoor Unit SiBE05-722_B 2. Outdoor Unit RK(X)S25/35E2V1B 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 Connector for reactor...
Page 29 SiBE05-722_B Outdoor Unit 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 30: Rk(X)S25/35G2V1B
Outdoor Unit SiBE05-722_B 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 Connector for reactor...
Page 31 SiBE05-722_B Outdoor Unit 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 32: Rk(X)S25/35G2V1B9, Rxs25/35J2V1B
Outdoor Unit SiBE05-722_B RK(X)S25/35G2V1B9, RXS25/35J2V1B 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 6) FU1...
Page 33 SiBE05-722_B Outdoor Unit 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 34: Part 4 Function And Control
SiBE05-722_B Part 4 Function and Control 1. Main Functions..................24 1.1 Temperature Control ................24 1.2 Frequency Principle................24 1.3 Airflow Direction Control.................26 1.4 Fan Speed Control for Indoor Units............27 1.5 Program Dry Operation ................28 1.6 Automatic Operation................29 1.7 Thermostat Control.................30 1.8 NIGHT SET Mode ..................31 1.9 HOME LEAVE Operation ...............32 1.10 Inverter POWERFUL Operation .............33 1.11 Other Functions..................34...
Page 35: Main Functions
SiBE05-722_B Main Functions 1. Main Functions Temperature Control Definitions of The definitions of temperatures are classified as following. Temperatures Room temperature: temperature of the 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 36 Main Functions SiBE05-722_B 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 37: Airflow Direction Control
SiBE05-722_B Main Functions Airflow Direction Control Auto-Swing The following table explains the auto-swing process for cooling, dry, fan, and heating: up and down cooling / dry / fan heating ceiling (R2964) (R2963) floor (R2967) (R2966) Function and Control...
Page 38: Fan Speed Control For Indoor Units
Main Functions SiBE05-722_B 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 39: Program Dry Operation
SiBE05-722_B Main Functions 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 40: Automatic Operation
Main Functions SiBE05-722_B 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 41: Thermostat Control
SiBE05-722_B Main Functions 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 42: Night Set Mode
Main Functions SiBE05-722_B 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 43: Home Leave Operation
SiBE05-722_B Main Functions HOME LEAVE Operation Outline HOME LEAVE operation is a function that allows you to record your favorite set temperature and airflow rate. You can start your favorite operation mode simply by pressing the [HOME LEAVE] button on the remote controller. Detail 1.
Page 44: Inverter Powerful Operation
Main Functions SiBE05-722_B 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 45: Other Functions
SiBE05-722_B Main Functions 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 46: Function Of Thermistor
Function of Thermistor SiBE05-722_B 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 47: Control Specification
SiBE05-722_B Control Specification 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 48: Frequency Control
Control Specification SiBE05-722_B 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 49 SiBE05-722_B Control Specification 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 50: Controls At Mode Changing / Start-Up
Control Specification SiBE05-722_B 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)S25/35E2V1B, RK(X)S25/35G2V1B ON Condition When the discharge pipe temperature is below 10ºC, the inverter operation in open phase...
Page 51 SiBE05-722_B Control Specification 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 52: Discharge Pipe Temperature Control
Control Specification SiBE05-722_B 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 A˚C...
Page 53: Input Current Control
SiBE05-722_B Control Specification 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 54: Freeze-Up Protection Control
Control Specification SiBE05-722_B 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 55: Outdoor Fan Control
SiBE05-722_B Control Specification 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 56: Defrost Control
Control Specification SiBE05-722_B 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 57: Electronic Expansion Valve Control
SiBE05-722_B Control Specification 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 58 Control Specification SiBE05-722_B 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 59 SiBE05-722_B Control Specification 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 60: Malfunctions
Control Specification SiBE05-722_B 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 61: Part 5 Operation Manual
SiBE05-722_B Part 5 Operation Manual 1. System Configuration................51 2. Operation Manual..................52 2.1 Remote Controller ..................52 2.2 AUTO · DRY · COOL · HEAT · FAN Operation ........53 2.3 Adjusting the Airflow Direction..............55 2.4 POWERFUL Operation ................57 2.5 OUTDOOR UNIT QUIET Operation............58 2.6 HOME LEAVE Operation ...............59 2.7 TIMER Operation ...................61 Operation Manual...
Page 62: System Configuration
System Configuration SiBE05-722_B 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 63: Operation Manual
SiBE05-722_B Operation Manual 2. Operation Manual Remote Controller Remote Controller < > ARC433B67, B68 1. Signal transmitter: 7. MODE selector button: • It sends signals to the indoor unit. • It selects the operation mode. (AUTO/DRY/COOL/HEAT/FAN) (page 10.) 2. Display: 8.
Page 64: Auto · Dry · Cool · Heat · Fan Operation
Operation Manual SiBE05-722_B 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 65 SiBE05-722_B Operation Manual To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode Five levels of air flow rate setting from “ ” to “ ” plus “ ”...
Page 66: Adjusting The Airflow Direction
Operation Manual SiBE05-722_B Adjusting the Airflow Direction Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button”. • “ ” is displayed on the LCD and the flaps will begin to swing.
Page 67 SiBE05-722_B Operation Manual To adjust the vertical blades (louvers) • When adjusting the louver, use a robust and stable stool and watch your steps carefully. Hold the knob and move the louvers. (You will find a knob on the left side and the right side blades.) Notes on flap and louvers angles.
Page 68: Powerful Operation
Operation Manual SiBE05-722_B POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity. To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20 minutes. Then the system automatically operates again with the settings which were used before POWERFUL operation.
Page 69: Outdoor Unit Quiet Operation
SiBE05-722_B 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 1.
Page 70: Home Leave Operation
Operation Manual SiBE05-722_B HOME LEAVE Operation HOME LEAVE Operation HOME LEAVE operation is a function which allows you to record your preferred temperature and air flow rate settings. To start HOME LEAVE operation 1. Press “HOME LEAVE button” . • The HOME LEAVE lamp lights up. To cancel HOME LEAVE 1, 2 operation...
Page 71 SiBE05-722_B Operation Manual What’s the HOME LEAVE operation? Is there a set temperature and air flow rate which is most comfortable, a set temperature and air flow rate which you use the most? HOME LEAVE operation is a function that allows you to record your favorite set temperature and air flow rate.
Page 72: Timer Operation
Operation Manual SiBE05-722_B 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 73 SiBE05-722_B Operation Manual To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time 1. Press “ON TIMER button”. is displayed. blinks. 2. Press “TIMER Setting button” until the time setting reaches the point you like.
Page 74: Part 6 Service Diagnosis
SiBE05-722_B Part 6 Service Diagnosis 1. Troubleshooting with LED ..............64 1.1 Indoor Unit....................64 1.2 Outdoor Unit ...................64 2. Problem Symptoms and Measures ............65 3. Service Check Function ................66 3.1 ARC433 Series..................66 4. Troubleshooting ..................69 4.1 Error Codes and Description ..............69 4.2 Indoor Unit PCB Abnormality ..............70 4.3 Freeze-up Protection Control or Heating Peak-cut Control....71 4.4 Fan Motor (AC Motor) or Related Abnormality........73...
Page 75: Troubleshooting With Led
SiBE05-722_B Troubleshooting with LED 1. Troubleshooting with LED Indoor Unit Operation Lamp The operation lamp blinks when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated, or when the thermistor malfunctions.
Page 76: Problem Symptoms And Measures
Problem Symptoms and Measures SiBE05-722_B 2. Problem Symptoms and Measures Symptom Check Item Details of Measure Reference Page The unit does not operate. Check the power supply. Check if the rated voltage is supplied. — Check the type of the indoor unit. Check if the indoor unit type is compatible with —...
Page 77: Service Check Function
SiBE05-722_B Service Check Function 3. Service Check Function ARC433 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 < ARC433 Series > (R14195) 2.
Page 78 Service Check Function SiBE05-722_B Check Method 2 1. Press the center of the TEMP button and the MODE button at the same time. (R4272) The figure of the ten’s place blinks. (R4273) 2. Press the TEMP▲ or ▼ button and change the figure until you hear the sound of “beep” or “pi pi”.
Page 79 SiBE05-722_B Service Check Function 5. Press the TEMP▲ or ▼ button and change the figure until you hear the sound of “beep”. (R4277) 6. Diagnose by the sound. ★ “pi” : The figure of the ten’s place does not accord with the error code. ★...
Page 80: Troubleshooting
Troubleshooting SiBE05-722_B 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 81: Indoor Unit Pcb Abnormality
SiBE05-722_B Troubleshooting Indoor Unit PCB Abnormality Remote Controller Display Method of The system checks if the circuit works properly within the microcomputer of the indoor unit. Malfunction Detection Malfunction The system cannot set the internal settings. Decision Conditions Supposed Wrong models interconnected Causes Defective indoor unit PCB Disconnection of connector...
Page 82: Freeze-Up Protection Control Or Heating Peak-Cut Control
Troubleshooting SiBE05-722_B 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 83 SiBE05-722_B 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.106 Is there any short circuit? Provide sufficient air passage. Check the air filter.
Page 84: Fan Motor (Ac Motor) Or Related Abnormality
Troubleshooting SiBE05-722_B Fan Motor (AC 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 85: Thermistor Or Related Abnormality (Indoor Unit)
SiBE05-722_B Troubleshooting 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 86: Signal Transmission Error (Between Indoor Unit And Outdoor Unit)
Troubleshooting SiBE05-722_B 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 87: Unspecified Voltage (Between Indoor Unit And Outdoor Unit)
SiBE05-722_B Troubleshooting 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 88: Outdoor Unit Pcb Abnormality
Troubleshooting SiBE05-722_B Outdoor Unit PCB Abnormality 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 89: Ol Activation (Compressor Overload)
SiBE05-722_B 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 90: Compressor Lock
Troubleshooting SiBE05-722_B 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 Operation stops due to overcurrent. If the error repeats 16 times, the system is shut down. Decision Reset condition: Continuous run for about 11 minutes without any other error Conditions...
Page 91: Dc Fan Lock
SiBE05-722_B 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 92: Input Overcurrent Detection
Troubleshooting SiBE05-722_B 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 A Decision Conditions...
Page 93: Four Way Valve Abnormality
SiBE05-722_B 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 10 minutes after operating for 5 minutes.
Page 94 Troubleshooting SiBE05-722_B 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.105 disconnected (loose)? Check No.06 Harness out of connector? Refer to P.106 Reconnect it.
Page 95: Discharge Pipe Temperature Control
SiBE05-722_B 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 A°C, the compressor stops.
Page 96: High Pressure Control In Cooling
Troubleshooting SiBE05-722_B 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 A°C.
Page 97: Compressor System Sensor Abnormality
SiBE05-722_B Troubleshooting 4.16 Compressor System Sensor Abnormality 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 98: Position Sensor Abnormality
Troubleshooting SiBE05-722_B 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 without any other error Decision Conditions...
Page 99 SiBE05-722_B Troubleshooting Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.14 Refer to P.110 Turn off the power. Check No.29 Check the power supply voltage. Refer to P.114 Voltage as rated? Correct the power supply.
Page 100: Dc Voltage / Current Sensor Abnormality
Troubleshooting SiBE05-722_B 4.18 DC Voltage / Current Sensor Abnormality 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 101: Thermistor Or Related Abnormality (Outdoor Unit)
SiBE05-722_B Troubleshooting 4.19 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 102 Troubleshooting SiBE05-722_B 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.106 Turn on the power again. Error displayed Reconnect the connectors again on remote or thermistors.
Page 103: Electrical Box Temperature Rise
SiBE05-722_B Troubleshooting 4.20 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 A°C. The error is cleared when the radiation fin temperature drops below B°C.
Page 104 Troubleshooting SiBE05-722_B Troubleshooting RK(X)S25/35E2V1B 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.106 again. To cool the electrical components, the outdoor fan starts when the radiation fin temperature rises above C˚C and stops when it...
Page 105 SiBE05-722_B Troubleshooting Troubleshooting RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RXS25/35J2V1B 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.107 again.
Page 106: Radiation Fin Temperature Rise
Troubleshooting SiBE05-722_B 4.21 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 A°C. The error is cleared when the radiation fin temperature drops below B°C.
Page 107 SiBE05-722_B Troubleshooting Troubleshooting RK(X)S25/35E2V1B 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.106 again to start the system. Check No.07 Refer to P.107 Error displayed again?
Page 108 Troubleshooting SiBE05-722_B Troubleshooting RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RXS25/35J2V1B 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.107 Turn off the power and turn it on again to start the system.
Page 109: Output Overcurrent Detection
SiBE05-722_B Troubleshooting 4.22 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 110 Troubleshooting SiBE05-722_B 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 Check No.07 disconnected and reconnected and the system is interrupted by an output overcurrent, take the following procedure.
Page 111: Refrigerant Shortage
SiBE05-722_B Troubleshooting 4.23 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 112 Troubleshooting SiBE05-722_B 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.104 Any thermistor Replace them in position. disconnected? ∗ Discharge pipe thermistor ∗ Indoor or outdoor heat exchanger thermistor ∗...
Page 113: Low-Voltage Detection Or Over-Voltage Detection
SiBE05-722_B Troubleshooting 4.24 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 114 Troubleshooting SiBE05-722_B 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 115: Check
SiBE05-722_B Check 5. Check Electronic Expansion Valve Check Check No.04 Conduct the followings to check the electronic expansion valve (EV). 1. Check to see if the EV connector is correctly connected to the PCB. 2. Turn the power off and on again, and check to see if the EV generate latching sound. 3.
Page 116: Four Way Valve Performance Check
Check SiBE05-722_B 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 117: Thermistor Resistance Check
SiBE05-722_B Check 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. Thermistor temperature (°C) Resistance (kΩ) –20...
Page 118: Installation Condition Check
Check SiBE05-722_B 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 119: Outdoor Fan System Check
SiBE05-722_B Check 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) Power Supply Waveforms Check Check No.10 Measure the power supply waveform between No.
Page 120: Power Module Check
Check SiBE05-722_B Power Module Check Check No.13 Note: Check to make sure that the voltage between (+) and (–) of the diode bridge (DB1) is approx. 0 V before checking. Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the connector, press the protrusion on the connector.
Page 121: Inverter Checker" Check
SiBE05-722_B Check 5.10 “Inverter Checker” Check Check No.14 Characteristics If abnormal stop occurs due to compressor startup failure or overcurrent output when using inverter unit, it is difficult to judge whether it is caused by the compressor failure or other failure (control PCB, power module, etc.).
Page 122 Check SiBE05-722_B Diagnose method (Diagnose according to 6 LEDs lighting status.) (1) When all the LEDs are lit uniformly, the compressor is defective. → Replace the compressor. (2) When the LEDs are not lit uniformly, check the power module. → Refer to Check No.13.
Page 123: Rotation Pulse Check On The Outdoor Unit Pcb
SiBE05-722_B Check 5.11 Rotation Pulse Check on the Outdoor Unit PCB Check No.15 RK(X)S25/35E2V1B, RK(X)S25/35G2V1B 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 124: Hall Ic Check
Check SiBE05-722_B RK(X)S25/35G2V1B9, RXS25/35J2V1B 1. Check that the voltage between the pins 10 - 11 is 15 VDC. 2. Check if the Hall IC generates the rotation pulse (0 ~ 15 VDC) 4 times between the pins 10 - 12, 10 - 13, when the fan motor is manually rotated once. HV (Hall IC) HU (Hall IC) 15 VDC...
Page 125: Main Circuit Short Check
SiBE05-722_B Check 5.13 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 126 Check SiBE05-722_B RK(X)S25/35G2V1B models + ~ ~ – Tester (R12411) RK(X)S25/35G2V1B9, RXS25/35J2V1B models Tester (R12035) Service Diagnosis...
Page 127: Part 7 Removal Procedure
SiBE05-722_B Part 7 Removal Procedure 1. Indoor Unit...................117 1.1 Removal of Air Filters / Front Grille ............117 1.2 Removal of Front Panel................120 1.3 Removal of Horizontal Blade..............122 1.4 Removal of Signal Receiver Unit / Swing Motor........123 1.5 Removal of Discharge Grille..............124 1.6 Removal of Drain Pan ................125 1.7 Removal of Electrical Box / PCBs ............126 1.8 Removal of Fan Rotor / Fan Motor............129...
Page 128: Indoor Unit
Indoor Unit SiBE05-722_B 1. Indoor Unit Removal of Air Filters / Front Grille Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. External appearance The illustrations are Note: given as the ceiling- The removal procedure is the...
Page 129 SiBE05-722_B Indoor Unit Step Procedure Points Hold the tab at the center of the air filter frame and pull the air filter forward. Air filter (R2980) Pull the air filter along Installing air filters can be the guide and remove done easily by sliding along the guide.
Page 130 Indoor Unit SiBE05-722_B Step Procedure Points To remove the front grille, unfasten the hooks at 3 locations. 4. Remove the side cover. Remove the side cover. Side cover Note: If it is difficult to remove the side cover from outside with fingers, remove the front panel first, then push the side cover from inside to...
Page 131: Removal Of Front Panel
SiBE05-722_B Indoor Unit Removal of Front Panel 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 4 screws of the front panel. Front panel (R2986) Note: For the ceiling-suspended type,...
Page 132 Indoor Unit SiBE05-722_B Step Procedure Points Unfasten the 3 hooks of Caution the front panel. Hook For ceiling-suspended type, be careful that the front panel may fall when the hooks are disengaged. To prevent the front panel from falling down, (R2989) this work should be done by 2 persons.
Page 133: Removal Of Horizontal Blade
SiBE05-722_B Indoor Unit Removal of Horizontal Blade Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Open the horizontal blade. Horizontal blade Deflect the 3 center bearings to the left side slightly, and release the shafts of the horizontal...
Page 134: Removal Of Signal Receiver Unit / Swing Motor
Indoor Unit SiBE05-722_B Removal of Signal Receiver Unit / Swing 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 signal receiver unit. Unfasten the 2 hooks (right and left sides) to remove the signal...
Page 135: Removal Of Discharge Grille
SiBE05-722_B Indoor Unit Removal of Discharge Grille 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. Discharge grille (R2999) Unfasten the 2 hooks (right and left sides) and remove the discharge grille by...
Page 136: Removal Of Drain Pan
Indoor Unit SiBE05-722_B Removal of Drain Pan 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 drain Caution hose. Be careful not to wet the floor with drain water.
Page 137: Removal Of Electrical Box / Pcbs
SiBE05-722_B Indoor Unit Removal of Electrical Box / PCBs 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 PCBs. Disconnect the earth wire and pull out the indoor heat exchanger thermistor.
Page 138 Indoor Unit SiBE05-722_B Step Procedure Points Power supply PCB Control (R3009) The illustration shows Refer to page 16 for detail. the control PCB. (R2958) Disconnect the terminals from the terminal board. Terminal board earth: green/yellow (1): black (2): white (3): red Power supply PCB (R14206) Removal Procedure...
Page 139 SiBE05-722_B Indoor Unit Step Procedure Points The illustration shows Refer to page 16 for detail. the power supply PCB. (R2959) 2. Remove the electrical box. Slide the electrical box to the right side first to unfasten the Remove the 2 screws. hooks.
Page 140: Removal Of Fan Rotor / Fan Motor
Indoor Unit SiBE05-722_B Removal of Fan Rotor / 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 Remove the 3 fan rotor covers. (Securing hooks are located at A and B-section.) A-section...
Page 141 SiBE05-722_B Indoor Unit Step Procedure Points Remove the 2 screws to remove the fan motor fixtures. Remove the screw to remove the bearing fixture. Bearing Fan motor fixture Bearing fixture (R3018) Release the shaft supporting section using a hexagonal wrench (for M6) to remove the fan motor.
Page 142: Removal Of Indoor Heat Exchanger
Indoor Unit SiBE05-722_B Removal of Indoor Heat Exchanger Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Be sure to conduct pump down operation before Auxiliary flexible tube disassembling the refrigerant pipe.
Page 143 SiBE05-722_B Indoor Unit Step Procedure Points Hook is located on the Warning right side behind the Do not contaminate any gas indoor heat exchanger. (including air) other than the specified refrigerant (R-410A) into refrigerating cycle. (Contaminating of air or other gas causes abnormal temperature rise in refrigerating cycle, and this...
Page 144: Outdoor Unit - Rk(X)S25/35E2V1B
Outdoor Unit - RK(X)S25/35E2V1B SiBE05-722_B 2. Outdoor Unit - RK(X)S25/35E2V1B Note: Illustrations are for heat pump models as representative. 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.
Page 145 SiBE05-722_B Outdoor Unit - RK(X)S25/35E2V1B Step Procedure Points Remove the 3 screws Top panel and lift the top panel. (R12413) Remove the drip proof Drip proof plate plate. (R3240) Disconnect the The fan motor is united with connector for the fan the front panel.
Page 146 Outdoor Unit - RK(X)S25/35E2V1B SiBE05-722_B Step Procedure Points Unfasten the hooks. The front panel has 4 hooks. Pull and remove the front panel. Hooks (R3243) 3. Remove the fan motor. The screw has reverse winding. Unscrew the washer- Nut size: M6 fitted nut of the outdoor fan.
Page 147 SiBE05-722_B Outdoor Unit - RK(X)S25/35E2V1B Step Procedure Points Remove the 2 screws Bell mouth and lift the bell mouth to unfasten the hooks. Hooks (R12422) Remove the bell mouth. Open the hooks and When reassembling, put the release the fan motor fan motor lead wire through lead wire.
Page 148 Outdoor Unit - RK(X)S25/35E2V1B SiBE05-722_B Step Procedure Points Remove the 4 screws M4×16 and remove the fan motor. Fan motor (R3250) Remove the 2 screws and remove the fan motor fixing frame. Fan motor fixing frame (R3251) Removal Procedure...
Page 149 SiBE05-722_B Outdoor Unit - RK(X)S25/35E2V1B 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 150 Outdoor Unit - RK(X)S25/35E2V1B SiBE05-722_B 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 151 SiBE05-722_B Outdoor Unit - RK(X)S25/35E2V1B 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 152: Removal Of Electrical Box
Outdoor Unit - RK(X)S25/35E2V1B SiBE05-722_B 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 1. Remove the electrical Preparation box. Remove the panels and disconnect the connector for Disconnect the 2 the fan motor according to...
Page 153 SiBE05-722_B Outdoor Unit - RK(X)S25/35E2V1B 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 154 Outdoor Unit - RK(X)S25/35E2V1B SiBE05-722_B 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 155 SiBE05-722_B Outdoor Unit - RK(X)S25/35E2V1B Step Procedure Points Lift and remove the Electrical Box electrical box. (R7223) Removal Procedure...
Page 156: Removal Of Pcb
Outdoor Unit - RK(X)S25/35E2V1B SiBE05-722_B 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 Feature of the main You can remove the main PCB when you disconnect the lead wires on the terminal board without...
Page 157 SiBE05-722_B Outdoor Unit - RK(X)S25/35E2V1B 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 18 for detail. [S40] [S30] [S90] [S20]: electronic expansion valve coil [S30]: compressor [S40]: overload protector...
Page 158: Removal Of Reactor / Partition Plate
Outdoor Unit - RK(X)S25/35E2V1B SiBE05-722_B Removal of Reactor / Partition Plate 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 reactor. Preparation Reactor Remove the outer panels Remove the screw and according to the “Removal of...
Page 159 SiBE05-722_B Outdoor Unit - RK(X)S25/35E2V1B Step Procedure Points The partition plate has a hook on the lower side. Lift and pull the partition plate to remove. When reassembling, fit the lower hook into the bottom frame. Hook (R3270) Removal Procedure...
Page 160: Removal Of Sound Blankets
Outdoor Unit - RK(X)S25/35E2V1B SiBE05-722_B Removal of Sound Blankets 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 Since the piping ports are blanket (top).
Page 161 SiBE05-722_B Outdoor Unit - RK(X)S25/35E2V1B 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 162: Removal Of Four Way Valve
Outdoor Unit - RK(X)S25/35E2V1B SiBE05-722_B 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 163 SiBE05-722_B Outdoor Unit - RK(X)S25/35E2V1B 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 164 Outdoor Unit - RK(X)S25/35E2V1B SiBE05-722_B 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 165: Removal Of Compressor
SiBE05-722_B Outdoor Unit - RK(X)S25/35E2V1B 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 166 Outdoor Unit - RK(X)S25/35E2V1B SiBE05-722_B 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 167: Outdoor Unit - Rk(X)S25/35G2V1B
SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B 3. Outdoor Unit - RK(X)S25/35G2V1B Note: Illustrations are for heat pump models as representative. 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.
Page 168 Outdoor Unit - RK(X)S25/35G2V1B SiBE05-722_B 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 169 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B 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 170 Outdoor Unit - RK(X)S25/35G2V1B SiBE05-722_B 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 (R14200) Remove the outdoor When reassembling, align fan.
Page 171 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B 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 172 Outdoor Unit - RK(X)S25/35G2V1B SiBE05-722_B 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 173 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B 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 174 Outdoor Unit - RK(X)S25/35G2V1B SiBE05-722_B 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 175 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B 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 176: Removal Of Electrical Box
Outdoor Unit - RK(X)S25/35G2V1B SiBE05-722_B 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 177 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B 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 178 Outdoor Unit - RK(X)S25/35G2V1B SiBE05-722_B 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 179 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B Step Procedure Points Lift and remove the Electrical box electrical box. (R9348) Removal Procedure...
Page 180: Removal Of Thermistors
Outdoor Unit - RK(X)S25/35G2V1B SiBE05-722_B Removal of Thermistors Procedure Warning Be sure to wait for 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 181 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B Step Procedure Points Feature of the thermistors (R9356) Removal Procedure...
Page 182: Removal Of Pcb
Outdoor Unit - RK(X)S25/35G2V1B SiBE05-722_B 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 1. Remove the main PCB. You can remove the main PCB when you disconnect Feature of the main the lead wires on the...
Page 183 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B 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 184 Outdoor Unit - RK(X)S25/35G2V1B SiBE05-722_B Step Procedure Points Feature of the main Refer to page 20 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 185: Removal Of Reactor / Partition Plate
SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B Removal of Reactor / Partition Plate 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 reactor. Preparation Reactor Remove the outer panels Remove the screw and according to the “Removal of...
Page 186 Outdoor Unit - RK(X)S25/35G2V1B SiBE05-722_B 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 187: Removal Of Sound Blankets
SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B Removal of Sound Blankets 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 188: Removal Of Four Way Valve
Outdoor Unit - RK(X)S25/35G2V1B SiBE05-722_B 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 189 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B 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 190 Outdoor Unit - RK(X)S25/35G2V1B SiBE05-722_B 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 191: Removal Of Compressor
SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B 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 192 Outdoor Unit - RK(X)S25/35G2V1B SiBE05-722_B 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 193: Outdoor Unit - Rk(X)S25/35G2V1B9, Rxs25/35J2V1B
SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B 4. Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B Note: Illustrations are for heat pump models as representative. 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.
Page 194 Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B SiBE05-722_B 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...
Page 195 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B 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 196 Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B SiBE05-722_B 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 (R14201) Remove the outdoor When reassembling, align fan.
Page 197 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B 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 198 Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B SiBE05-722_B 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 199 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B 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).
Page 200 Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B SiBE05-722_B 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.
Page 201 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B 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 202: Removal Of Electrical Box
Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B SiBE05-722_B 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 Preparation connector for the Remove the panels and overload protector disconnect the connector for [S40].
Page 203 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B 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 204 Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B SiBE05-722_B 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 205: Removal Of Pcbs
SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B Removal of PCBs 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 main PCB. You can remove the main PCB when you disconnect Feature of the main the lead wires on the...
Page 206 Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B SiBE05-722_B 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 207 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B 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 208 Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B SiBE05-722_B 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 209 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B Step Procedure Points Remove the 6 screws. (R11866) Unfasten the 4 hooks and remove the main PCB. (R11867) Refer to page 22 for detail. [S50] [S100] [S10] [HL3] [HN3]: filter PCB [S20]: electronic expansion valve coil [HN3] [S40]: overload protector...
Page 210 Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B SiBE05-722_B 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 211 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B 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 212 Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B SiBE05-722_B Step Procedure Points Feature of the filter Refer to page 22 for detail. (R11878) Removal Procedure...
Page 213: Removal Of Reactor / Partition Plate
SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B Removal of Reactor / Partition Plate 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 reactor. Preparation Reactor Remove the outer panels Remove the screw and...
Page 214 Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B SiBE05-722_B 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 215: Removal Of Sound Blankets
SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B Removal of Sound Blankets 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 Since the piping ports are blanket (top).
Page 216 Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B SiBE05-722_B 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 217: Removal Of Four Way Valve
SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B 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 218 Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B SiBE05-722_B 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 219 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B 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 220: Removal Of Compressor
Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B SiBE05-722_B 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 pipes and other parts that are heated by the...
Page 221 SiBE05-722_B Outdoor Unit - RK(X)S25/35G2V1B9, RXS25/35J2V1B 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 222: Part 8 Trial Operation And Field Settings
SiBE05-722_B Part 8 Trial Operation and Field Settings 1. Pump Down Operation................212 2. Forced Cooling Operation ..............213 3. Trial Operation ..................214 4. Field Settings ..................215 4.1 When 2 Units are Installed in 1 Room..........215 4.2 Standby Electricity Saving..............216 4.3 Facility Setting Jumper (cooling at low outdoor temperature) ....217 4.4 Jumper and Switch Settings..............218 5.
Page 223: Pump Down Operation
SiBE05-722_B Pump Down Operation 1. Pump Down Operation Outline In order to protect the environment, be sure to conduct pump down operation when relocating or disposing the unit. Detail 1) Remove the valve caps from the liquid stop valve and the gas stop valve. 2) Carry out forced cooling operation.
Page 224: Forced Cooling Operation
Forced Cooling Operation SiBE05-722_B 2. Forced Cooling Operation Item Forced Cooling Conditions The forced cooling operation is allowed when both the following conditions are met. 1) The outdoor unit is not abnormal and not in the 3-minute standby mode. 2) The outdoor unit is not operating. Start The forced cooling operation starts when any of the following conditions is fulfilled.
Page 225: Trial Operation
SiBE05-722_B Trial Operation 3. 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 226: Field Settings
Field Settings SiBE05-722_B 4. 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.
Page 227: Standby Electricity Saving
SiBE05-722_B Field Settings Standby Electricity Saving Outline RK(X)S25/35G2V1B, RK(X)S25/35G2V1B9, RXS25/35J2V1B 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 228: Facility Setting Jumper (Cooling At Low Outdoor Temperature)
Field Settings SiBE05-722_B Facility Setting Jumper (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 on the outdoor unit PCB.
Page 229: Jumper And Switch Settings
SiBE05-722_B Field Settings A humidifier might cause dew jumping from the indoor unit outlet vent. 4. Cutting jumper sets the indoor fan tap to the highest position. Jumper and Switch Settings Jumper Function When connected When cut (factory set) Fan speed setting Fan speed setting;...
Page 230: Application Of Silicon Grease To A Power Transistor And A Diode Bridge
Application of Silicon Grease to a Power Transistor and a Diode Bridge SiBE05-722_B 5. 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 231: Part 9 Appendix
SiBE05-722_B Part 9 Appendix 1. Piping Diagrams..................221 1.1 Indoor Unit....................221 1.2 Outdoor Unit ..................222 2. Wiring Diagrams..................224 2.1 Indoor Unit....................224 2.2 Outdoor Unit ..................224 Appendix...
Page 232: Piping Diagrams
Piping Diagrams SiBE05-722_B 1. Piping Diagrams Indoor Unit FLKS25/35BAVMB FLXS25/35BAVMB INDOOR UNIT INDOOR UNIT ( 6.4CuT ) ( 6. 4CuT ) HEAT EXCHANGER HEAT EXCHANGER THERMISTOR ON HEAT FIELD PIPING THERMISTOR EXCH. ( 6.4CuT ) SIROCCO FAN FIELD PIPING ON HEAT ( 6.
Page 233: Outdoor Unit
SiBE05-722_B Piping Diagrams Outdoor Unit 1.2.1 Cooling Only RKS25/35E2V1B 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...
Page 234 Piping Diagrams SiBE05-722_B 1.2.2 Heat Pump RXS25/35E2V1B 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 ON : HEATING...
Page 235: Wiring Diagrams
SiBE05-722_B Wiring Diagrams 2. Wiring Diagrams Indoor Unit FLK(X)S25/35BAVMB PCB3 PCB1 PCB2 3.15A → outdoor FIELD WIRING. / YLW PCB4 TRANSMISSION CIRCUIT CAUTION NOTE THAT OPERATION WILL SIGNAL RESTART AUTOMATICALLY IF RECEIVER THE MAIN POWER SUPPLY IS indoor TURNED OFF AND THEN BACK ON AGAIN.
Page 236 Wiring Diagrams SiBE05-722_B RK(X)S25/35G2V1B FIELD WIRING. MRM20 IPM1 indoor MRM10 C118 3.15A MR30 3.15A W V U PCB2 PCB1 MR30_A MR30_B MRCW outdoor NOTE 1. REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS. IN CASE OF t˚ t˚ t˚ C5, C6, C119 : CAPACITOR HEAT PUMP DB1, DB2...
Page 237 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.

Daikin FLXS-BAVMB Service Manual

Part 1 List of Functions

Part 2 Specifications

Part 3 Printed Circuit Board Connector Wiring Diagram

Part 4 Function and Control

Part 5 Operation Manual

Part 6 Service Diagnosis

Part 7 Removal Procedure

Part 8 Trial Operation and Field Settings

Part 9 Appendix

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