Daikin RY35GXV1 Service Manual
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Daikin RY35GXV1 Service Manual

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SiBE01 - 829
SPLIT Pair
Wall Mounted Type G-Series
[Applied Models]
Non-Inverter Pair : Heat Pump

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Summary of Contents for Daikin RY35GXV1

  • Page 1 SiBE01 - 829 SPLIT Pair Wall Mounted Type G-Series [Applied Models] Non-Inverter Pair : Heat Pump...
  • Page 2 SiBE01-829 Non-Inverter Pair G-Series Heat Pump Indoor Unit FTYN25GXV1B FTY25GXV1 FTYN35GXV1B FTY35GXV1 Outdoor Unit RYN25GXV1B RY25GXV1 RYN35GXV1B RY35GXV1 Table of Contents...

  • Page 3: Table Of Contents

    SiBE01-829 1. Introduction .....................v 1.1 Safety Cautions ..................v 1.2 Used Icons ....................ix Part 1 List of Function ..............1 1. Functions....................2 Part 2 Specifications ..............5 1. Specifications ..................6 Part 3 Printed Circuit Board Connector Wiring Diagram ..... 9 1.
  • Page 4 SiBE01-829 2. Problem Symptoms and Measures ............41 3. Service Check Function ................42 4. Troubleshooting ..................43 4.1 Error Codes and Description ..............43 4.2 Indoor Unit PCB Abnormality ..............44 4.3 Freeze-up Protection Control, High Pressure Control or Indoor Heat Exchanger Thermistor Abnormality ........45 4.4 Fan Motor or Related Abnormality (AC motor)........47 4.5 Thermistor or Related Abnormality............48 4.6 High Pressure Control in Cooling or...
  • Page 5 SiBE01-829 Index ..................... i Drawings & Flow Charts ............... iii Table of Contents...

  • Page 6: Introduction

    SiBE01-829 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 7 Introduction SiBE01-829 Warning Be sure to wear a safety helmet, gloves, and a safety belt when working at a high place (more than 2m). Insufficient safety measures may cause a fall accident. In case of R410A refrigerant models, be sure to use pipes, flare nuts and tools for the exclusive use of the R410A refrigerant.
  • Page 8 SiBE01-829 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 9 Introduction SiBE01-829 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 10: Used Icons

    SiBE01-829 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 11 Introduction SiBE01-829...

  • Page 12: List Of Function

    SiBE01-829 Part 1 List of Function 1. Functions....................2 List of Function...

  • Page 13: Functions

    Functions SiBE01-829 Functions Category Functions Category Functions Basic Function Inverter (with Inverter Power Control) — Health & Clean Air Purifying Filter Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — –10 Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 14 SiBE01-829 Functions Category Functions Category Functions Basic Function Inverter (with Inverter Power Control) — Health & Clean Air Purifying Filter Operation Limit for Cooling (°CDB) –10 Operation Limit for Heating (°CWB) Photocatalytic Deodorizing Filter — Air Purifying Filter with Photocatalytic PAM Control —...
  • Page 15 Functions SiBE01-829 List of Function...

  • Page 16: Part 2 Specifications

    SiBE01-829 Part 2 Specifications Specifications ..................6 Specifications...

  • Page 17: Specifications

    Specifications SiBE01-829 Specifications 50Hz 230V Indoor Units FTYN25GXV1B FTYN35GXV1B Models RYN25GXV1B RYN35GXV1B Outdoor Units Cooling Heating Cooling Heating 2.85 3.27 3.68 Capacity Btu/h 8,500 9,700 11,200 12,600 Rated (Min.~Max.) kcal/h 2,150 2,450 2,810 3,160 Running Current (Rated) Power Consumption 1,020 1,020 Rated (Min.~Max.) Power Factor...
  • Page 18 SiBE01-829 Specifications 50Hz 220V Indoor Units FTY25GXV1 FTY35GXV1 Models RY25GXV1 RY35GXV1 Outdoor Units Cooling Heating Cooling Heating 2.65 2.91 Capacity Btu/h 9,000 9,900 11,600 13,000 kcal/h 2,300 2,500 2,900 3,300 Running Current Power Consumption 1,060 1,100 Power Factor 98.1 98.0 96.9...
  • Page 19 Specifications SiBE01-829 Specifications...

  • Page 20: Part 3 Printed Circuit Board Connector Wiring Diagram

    SiBE01-829 Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........10 1.1 Indoor Unit....................10 Printed Circuit Board Connector Wiring Diagram...

  • Page 21: Printed Circuit Board Connector Wiring Diagram

    Printed Circuit Board Connector Wiring Diagram SiBE01-829 Printed Circuit Board Connector Wiring Diagram Indoor Unit Connectors PCB(1)(Control PCB) CN_FANFB, Connector for AC fan motor CN_FAN CN_STP Connector for swing motor (horizontal blades) CN_DISP Connector for display PCB CN_ODCOIL Connector for outdoor thermistor CN_TBTF Connector for terminal fuse PCB(2)(Display PCB)
  • Page 22 SiBE01-829 Printed Circuit Board Connector Wiring Diagram Control PCB CN_TBTF CN_FAN CN_STP CN_FANFB FUSE1 CN_DISP CN_ODCOIL (R8637) Display PCB CN_MB H2P H1P Printed Circuit Board Connector Wiring Diagram...
  • Page 23 Printed Circuit Board Connector Wiring Diagram SiBE01-829 Printed Circuit Board Connector Wiring Diagram...

  • Page 24: Part 4 Functions And Control

    SiBE01-829 Part 4 Functions and Control 1. Functions....................14 1.1 Power-Airflow Flap, Wide-Angle Louvers and Auto-Swing ....14 1.2 Fan Speed Control for Indoor Units............15 1.3 Thermostat Control.................16 1.4 Automatic Operation................17 1.5 Programme Dry Function ...............18 1.6 Sleep Operation ..................20 1.7 POWERFUL Operation ................21 1.8 Other Functions..................22 Function of Thermistor..................23 3.

  • Page 25: Functions

    Functions SiBE01-829 1. Functions Power-Airflow Flap, Wide-Angle Louvers and Auto- Swing Power-Airflow The large flap send a large volume of air downwards to the floor. The flap provides an optimum control area in cooling, heating and dry mode. Flap Heating Mode During heating mode, the large flap enables direct warm air straight downwards.

  • Page 26: Fan Speed Control For Indoor Units

    SiBE01-829 Functions Fan Speed Control for Indoor Units Control Mode The airflow rate can be automatically controlled depending on the difference between the set temperature and the room temperature. This is done through phase control and Hall IC control. For more information about Hall IC, refer to troubleshooting for fan motor on page 47.

  • Page 27: Thermostat Control

    Functions SiBE01-829 Thermostat Control Thermostat control is based on the difference between the room temperature and the setpoint. Cooling Thermostat OFF: Room temperature – setpoint < − 1 ° C Thermostat ON : Room temperature – setpoint > +0.5 ° C Room temperature –...

  • Page 28: Automatic Operation

    SiBE01-829 Functions Automatic Operation Outline When the automatic mode is selected with the remote controller, the microcomputer determines the operation mode from cooling and heating according to the room temperature and the setpoint. The unit automatically switches the operation mode to cooling or heating to maintain the room temperature.

  • Page 29: Programme Dry Function

    Functions SiBE01-829 Programme Dry Function Outline Programme dry function removes humidity while preventing the room temperature from lowering. Since the microcomputer controls airflow rate, the fan adjustment buttons are inoperable in this mode. Details of the During the first 12 minutes of the DRY mode run from: 1.
  • Page 30 SiBE01-829 Functions 4. If set temp. – room temp. > 3°C, then the operation is in Zone D. ZONE D 12 min. Compressor L tap 30 sec. (R8494) Functions and Control...

  • Page 31: Sleep Operation

    Functions SiBE01-829 Sleep Operation When the Sleep Operation is set, the Sleep Operation circuit activates. The Sleep Operation circuit maintains the airflow setting made by users. The Sleep When the unit is operating under cooling mode, the set temperature is increased by 0.5°C Operation Circuit after the first half an hour, 1°C after the second half an hour and total of 2°C after the following 1 hour.

  • Page 32: Powerful Operation

    SiBE01-829 Functions 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. Details of the When POWERFUL button is pushed, the fan speed and the target temperature will be converted to the following states for 20 minutes.

  • Page 33: Other Functions

    Functions SiBE01-829 Other Functions 1.8.1 Hot Start Function In order to prevent the cold draft that normally comes when heating operation starts, 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. *The cold draft is also prevented using a similar control when the thermostat turns OFF.

  • Page 34: Function Of Thermistor

    SiBE01-829 Function of Thermistor Function of Thermistor Four way valve Compressor (R4733) Outdoor Heat 1. The outdoor heat exchanger thermistor is used for high pressure control during cooling operation. Exchanger Thermistor Indoor Heat 1. The indoor heat exchanger thermistor is used to prevent freezing. During the cooling operation, if the temperature drops abnormally, the operating frequency Exchanger becomes lower, then the operation must be halted.

  • Page 35: Control Specification

    Control Specification SiBE01-829 3. Control Specification Four Way Valve Switching Outline Current is conducted during heating operation, and current is not conducted during cooling or defrosting. In order to eliminate the switching sound (as the four way valve coil switches from ON to OFF) when the heating is stopped, the delay switch of the four way valve is carried out after the operation stopped.

  • Page 36: Heating Peak-Cut Control

    SiBE01-829 Control Specification Heating Peak-cut Control Outline During heating operation, heating peak-cut control is activated according to the temperature of the indoor heat exchanger to prevent abnormal high pressure. Detail Conditions for starting Temperature of the indoor heat exchanger > 68°C. While controlling The compressor halts.

  • Page 37: Defrost Control

    Control Specification SiBE01-829 Defrost Control Outline In heating, defrosting is carried out by the cooling cycle (reverse cycle) to prevent the outdoor heat exchanger being frosted. The defrosting time or outdoor heat exchanger temperature must be more than its fixed value when finishing. Detail Time chart Heating...

  • Page 38: Part 5 Operation Manual

    SiBE01-829 Part 5 Operation Manual 1. System Configuration................28 Instructions ......................29 2.1 Remote Controller ..................29 2.2 AUTO • DRY • COOL • HEAT • FAN Operation ........30 2.3 Adjusting the Airflow Direction..............32 2.4 POWERFUL Operation ................33 2.5 QUIET Operation..................34 2.6 TIMER Operation ...................35 2.7 PERSONALIZE Operation ..............36 2.8 SLEEP Operation ...................37 Operation Manual...

  • Page 39: System Configuration

    System Configuration SiBE01-829 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 40: Instructions

    SiBE01-829 Instructions Instructions Note: This instruction is for FTYN models as representative. Remote Controller Remote Controller 1. Signal transmitter: • It sends signals to the indoor unit. 2. Display: • It displays the current settings. ˚ (In this illustration, each section is shown ˚...

  • Page 41: Auto · Dry · Cool · Heat · Fan Operation

    Instructions SiBE01-829 AUTO • DRY • COOL • HEAT • FAN Operation 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 42 SiBE01-829 Instructions To change the airflow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode 3 levels of airflow rate setting from “ ” to “ ” plus “ ” are available. The airflow rate setting is not variable.

  • Page 43: Adjusting The Airflow Direction

    Instructions SiBE01-829 Adjusting the Airflow Direction Adjusting the Airflow Direction You can adjust the airflow direction to increase your comfort. To adjust the horizontal blades (flaps) û ˚ AUTO 1. Press “SWING button”. • “ ” is displayed on the LCD and the flaps will begin to swing.

  • Page 44: Powerful Operation

    SiBE01-829 Instructions POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity. û To start POWERFUL ˚ AUTO operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20minutes. Then the system automatically operates again with the previous settings which were used before 1, 2...

  • Page 45: Quiet Operation

    Instructions SiBE01-829 QUIET Operation QUIET Operation QUIET operation lowers the noise level of the indoor unit by changing the airflow rate minimum. Use this when making the noise quieter. û To start QUIET operation û AUTO 1. Press “QUIET button”. •...

  • Page 46: Timer Operation

    SiBE01-829 Instructions 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 û...

  • Page 47: Personalize Operation

    Instructions SiBE01-829 PERSONALIZE Operation PERSONALIZE Operation PERSONALIZE operation is the function which allows you to record your preferred settings. You can set your preferred setting one time by using this function. û ˚ To set PERSONALIZE AUTO operation 1. Hold down “PERSONALIZED button” until “P1”...

  • Page 48: Sleep Operation

    SiBE01-829 Instructions SLEEP Operation SLEEP Operation When set SLEEP operation, the air conditioner automatically adjusts the temperature setting. To set SLEEP operation û û AUTO 1. Press “SLEEP button”. • is displayed. To cancel SLEEP operation 2. Press “SLEEP button” again. •...
  • Page 49 Instructions SiBE01-829 Operation Manual...

  • Page 50: Part 6 Service Diagnosis

    SiBE01-829 Part 6 Service Diagnosis 1. Caution for Diagnosis................40 2. Problem Symptoms and Measures ............41 3. Service Check Function ................42 4. Troubleshooting ..................43 4.1 Error Codes and Description ..............43 4.2 Indoor Unit PCB Abnormality ..............44 4.3 Freeze-up Protection Control, High Pressure Control or Indoor Heat Exchanger Thermistor Abnormality ........45 4.4 Fan Motor or Related Abnormality (AC motor)........47 4.5 Thermistor or Related Abnormality............48...

  • Page 51: Caution For Diagnosis

    Caution for Diagnosis SiBE01-829 Caution for Diagnosis The operation lamp flashes when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation. 2.

  • Page 52: Problem Symptoms And Measures

    SiBE01-829 Problem Symptoms and Measures Problem Symptoms and Measures Problem Check Solution Reference Page None of the units operates. 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 53: Service Check Function

    Service Check Function SiBE01-829 3. Service Check Function The temperature display sections on the main unit indicate corresponding codes. 1. When the ON timer or OFF timer cancel button is held down for 5 seconds, a “ 00 ” indication Check Method flashes on the temperature display section.

  • Page 54: Troubleshooting

    SiBE01-829 Troubleshooting 4. Troubleshooting Error Codes and Description Reference Code Description Page System Normal — Insufficient gas Hardware error (tact switch pin short) Indoor Indoor unit PCB abnormality Unit Freeze-up protection control, high pressure control or indoor heat exchanger thermistor abnormality Fan motor or related abnormality (AC motor) Heat exchanger thermistor abnormality Room temperature thermistor abnormality...

  • Page 55: Indoor Unit Pcb Abnormality

    Troubleshooting SiBE01-829 Indoor Unit PCB Abnormality Remote Controller Display Method of EEPROM is an electronic device which stores data or settings of air conditioner. Malfunction The condition of EEPROM is used to detect the PCB abnormality. Detection Malfunction When the controller is unable to read data from EEPROM Decision Conditions Supposed...

  • Page 56: Freeze-Up Protection Control, High Pressure Control Or

    SiBE01-829 Troubleshooting Freeze-up Protection Control, High Pressure Control Indoor Heat Exchanger Thermistor Abnormality Remote Controller Display Method of High pressure control During heating operations, the temperature detected by the indoor heat exchanger Malfunction thermistor is used for the high pressure control (stop, outdoor fan stop, etc.) Detection Freeze-up protection control (operation halt) is activated during cooling operation according to the temperature detected by the indoor unit heat exchanger thermistor.
  • Page 57 Troubleshooting SiBE01-829 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Refer to P.55 Check the stop valve. Is it opened? Open the stop valve. Check the air passage. Is there any short-circuit? Provide sufficient air passage.

  • Page 58: Fan Motor Or Related Abnormality (Ac Motor)

    SiBE01-829 Troubleshooting Fan Motor or Related Abnormality (AC motor) 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 When the fun is not running or there is no fan speed feedback to the controller for 10 seconds. Decision Conditions Supposed...

  • Page 59: Thermistor Or Related Abnormality

    Troubleshooting SiBE01-829 Thermistor or Related Abnormality 4.5.1 Heat Exchanger Thermistor Remote Controller Display Method of The temperatures detected by the indoor and outdoor heat exchanger thermistors are used to determine thermistor errors. Malfunction Detection Malfunction When the indoor and outdoor heat exchanger thermistor input is 0 V during compressor operation ∗...
  • Page 60 SiBE01-829 Troubleshooting 4.5.2 Room Temperature Thermistor Remote Controller Display Method of The temperatures detected by the room temperature thermistor is used to determine thermistor error. Malfunction Detection Malfunction When the room temperature thermistor input is more than 5 V, or 0 V during compressor operation ∗...

  • Page 61: High Pressure Control In Cooling Or

    Troubleshooting SiBE01-829 High Pressure Control in Cooling Outdoor Heat Exchanger Thermistor Abnormality Remote Controller Display Method of High-pressure control (stop) is activated in the cooling mode if the temperature being sensed by the heat exchanger thermistor exceeds the limit. Malfunction The temperature detected by the outdoor heat exchanger thermistor is used to determine the Detection abnormal thermistor.
  • Page 62 SiBE01-829 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Refer to P.55 Check the stop valve. Check No.07 Is it opened? Open the stop valve. Refer to P.56 Check No.09 Check the installation space.

  • Page 63: Hardware Error (Tact Switch Pin Short)

    Troubleshooting SiBE01-829 Hardware Error (Tact Switch Pin Short) Remote Controller Display Method of The ON/OFF button is continuously pressed during power ON. Malfunction Detection Malfunction The error is caused when the plastic casing is not properly installed and pressing the switch, or the switch has quality problem.

  • Page 64: Insufficient Gas

    SiBE01-829 Troubleshooting Insufficient Gas Remote Controller Display Method of A gas shortage is detected by checking the indoor unit heat exchanger temperature. Malfunction Detection Malfunction When the compressor operates for 30 min. with the indoor heat exchanger temperature is °C and then, check for 5 more min.
  • Page 65 Troubleshooting SiBE01-829 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Refer to P.55 Is thermistor Replace in position. disconnected? * Indoor heat exchanger thermistor Stop valve closed? Open the stop valve.

  • Page 66: Check

    SiBE01-829 Check Check Thermistor Resistance Check Check No.06 Remove the connectors of the thermistors on the PCB, and measure the resistance of each thermistor using tester. The relationship between normal temperature and resistance is shown in the graph and the table below.

  • Page 67: Installation Condition Check

    Check SiBE01-829 Installation Condition Check Check No.07 Installation condition check Check the Abnormal allowable dimensions Change the position of the air of the air suction and discharge grille or the discharge area. installation location. Normal Does the discharged air from other outdoor unit cause an Change the position of the air increase of the suction...

  • Page 68: Outdoor Unit Fan System Check

    SiBE01-829 Check Outdoor Unit Fan System Check Check No.09 Check the outdoor fan system. Abnormal Check the Does the outdoor fan motor lead wire Repair. fan rotate? connector for secure connection. Normal Does Are the the outdoor unit fan resistance at connector start just after the power Replace the fan motor.
  • Page 69 Check SiBE01-829 Service Diagnosis...

  • Page 70: Part 7 Removal Procedure

    SiBE01-829 Part 7 Removal Procedure 1. Indoor Unit.....................60 1.1 Removal of Air Filter................60 1.2 Removal of Front Panel................62 1.3 Removal of Front Grille ................63 1.4 Removal of Horizontal / Vertical Blades and Safety Net ......65 1.5 Removal of Electrical Box ..............68 1.6 Removal of PCB / Swing Motor..............72 1.7 Removal of Heat Exchanger ..............76 1.8 Removal of Fan Rotor ................79...

  • Page 71: Indoor Unit

    Indoor Unit SiBE01-829 1. Indoor Unit Removal of Air Filter Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Appearance feature Warning Dangerous: High voltage A high voltage is applied to all the electric circuits of this product including thermistors.
  • Page 72 SiBE01-829 Indoor Unit Step Procedure Points Pull out the air filter downwards and remove (R8570) 3. Removing the air purifying filter The air purifying filter is attached to the back of Air filter the air filter. Air purifying filter (R8636) Remove the air purifying filter frame by Projections...

  • Page 73: Removal Of Front Panel

    Indoor Unit SiBE01-829 Removal of Front Panel Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Open the front panel Preparation over the position where Remove the air filter Right side it will stop.

  • Page 74: Removal Of Front Grille

    SiBE01-829 Indoor Unit Removal of 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. Removing the service cover Remove the screw of Preparation the service cover. Remove the front panel according to the “Removal of Front Panel”.
  • Page 75 Indoor Unit SiBE01-829 Step Procedure Points Press each hook, and also lift the grille up to Left Center Right unfasten the hooks. (R8030) Pull the upper part of the front grille towards Left Center Right yourself. Front grille (R8578) Lift the lower part up, Caution on Mounting and then remove the When mounting the front...

  • Page 76: Removal Of Horizontal / Vertical Blades And Safety Net

    SiBE01-829 Indoor Unit Removal of Horizontal Vertical Blades Safety Net Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the horizontal blade (large) Open the horizontal blade.
  • Page 77 Indoor Unit SiBE01-829 Step Procedure Points Remove the horizontal blade. (R8582) 2. Removing the safety net Unfasten the hooks at the lower part with a flat screwdriver. (R8583) Unfasten the hooks at the upper 2 positions. (R8584) Remove the safety net Repeat the same procedure toward yourself.
  • Page 78 SiBE01-829 Indoor Unit Step Procedure Points 3. Removing the vertical Six vertical blades are blade united as a set. Hooks (It is impossible to replace Unfasten the hooks at only one blade.) the upper 2 positions. The set of blades is not marked for difference between right and left.

  • Page 79: Removal Of Electrical Box

    Indoor Unit SiBE01-829 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. Disconnect the connecting Preparation Terminal board Electrical box wires Remove the front grille according to the “Removal The figure shows the of Front Grille”.
  • Page 80 SiBE01-829 Indoor Unit Step Procedure Points 2. Remove the electrical box. Disconnect the earth wire by removing the screw. (R8594) Disconnect the [CN_FANFB] connector of the fan motor [CN_FANFB]. (R8595) Disconnect the connector of the swing motor [CN_STP]. [CN_STP] (R8596) Disconnect the connector of the fan motor [CN_FAN].
  • Page 81 Indoor Unit SiBE01-829 Step Procedure Points Remove the fixing screw of the electrical box. (R8598) Remove the screw of cable fixture for thermistor cable. (R8599) Disconnect the connecting wire for thermistor cable. Thermistor cable (outdoor unit side) (R8600) Removal Procedure...
  • Page 82 SiBE01-829 Indoor Unit Step Procedure Points Pull the electrical box towards yourself. (R8601) When mounting, fit the There are a groove and a position of the hook and hook on the rear side. Hook the groove. (R8602) Removal Procedure...

  • Page 83: Removal Of Pcb / Swing Motor

    Indoor Unit SiBE01-829 Removal of PCB Swing Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the shelter Preparation Remove the electrical box To remove the shelter Hooks according to the “Removal (1), unfasten the hooks...
  • Page 84 SiBE01-829 Indoor Unit Step Procedure Points Disconnect the wire harnesses with pliers. (R8606) 2. Removing the display Preparation Remove the electrical box according to the “Removal Lift the lower part of the of Electrical Box”. display PCB to remove. (R8607) Disconnect the connector [CN_MB] from the display PCB.
  • Page 85 Indoor Unit SiBE01-829 Step Procedure Points Disconnect the three [CN_DISP]: [CN_ODCOIL] connectors. To display PCB [CN_ODCOIL]: To outdoor unit thermistor [CN_TBTF]: To terminal fuse [CN_DISP] (R8609) [CN_TBTF] To remove the control PCB, unfasten the 2 hooks at the upper part from the rear side.
  • Page 86 SiBE01-829 Indoor Unit Step Procedure Points 3. Removing the swing motor Swing motor (R8613) Remove the screw of the swing motor. (R8614) Disconnect the connector. (R8615) Removal Procedure...

  • Page 87: Removal Of Heat Exchanger

    Indoor Unit SiBE01-829 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 1. Disconnecting the Preparation refrigerant pipe Remove the electrical box according to the “Removal Remove the screws of Electrical Box”.
  • Page 88 SiBE01-829 Indoor Unit Step Procedure Points Unscrew the flare nut for liquid piping by 2 wrenches. (R8018) 2. Removing the indoor unit When the pipes are disconnected, protect the Remove the indoor unit both openings of pipe side from the installation and unit side from entering plate.
  • Page 89 Indoor Unit SiBE01-829 Step Procedure Points Widen the auxiliary At an angle of 10°~20° piping to the extent of 10°~20°. Unscrew the fixing screw on the left side. Caution When dismounting or mounting the heat exchanger, be sure to wear gloves or wrap it with cloth before proceeding to the work.

  • Page 90: Removal Of Fan Rotor

    SiBE01-829 Indoor Unit Removal of Fan Rotor 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 right side Preparation panel Remove the heat exchanger according to the “Removal Loosen the screw of the of Heat Exchanger”.
  • Page 91 Indoor Unit SiBE01-829 Step Procedure Points 2. Remove the fan rotor and fan motor Remove the screw of the fan motor (right). (R8624) Unfasten the hook of the motor fixture to remove. (R8625) Lift up the right side and slide, then remove the fan rotor.
  • Page 92 SiBE01-829 Indoor Unit Step Procedure Points Remove the fan motor. Fan motor (R8628) Unfasten the hook of the bearing by a flat driver. (R8629) Remove the bearing. (R8630) Removal Procedure...

  • Page 93: Exchange Of Drain Hose

    Indoor Unit SiBE01-829 Exchange of Drain Hose Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the fixing To prevent water leakage, screw on the right side make sure to mount the and remove the drain fixing screw as it was.
  • Page 94 SiBE01-829 Indoor Unit Step Procedure Points Insert the drain hose to the left side, and tighten Caution with the heat insulate Do not thrust in the drain fixing screw. plug with a sharp-pointed tool like a screwdriver. (The drain plug may be broken, resulting in water leakage.) (R8634) Removal Procedure...

  • Page 95: Outdoor Unit

    Outdoor Unit SiBE01-829 2. Outdoor Unit Removal of 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. Features Handle (R8529) Take care not to cut your finger by the fins of the heat exchanger.
  • Page 96 SiBE01-829 Outdoor Unit Step Procedure Points 2. Remove the panels. Top panel Loosen the 2 screws (right, left) and lift the top panel. (R8530) Loosen the 4 screws of the discharge grille. (R8531) The discharge grille has 4 hooks. (R8532) Removal Procedure...
  • Page 97 Outdoor Unit SiBE01-829 Step Procedure Points Loosen the 8 screws of the front panel. Front panel (R8533) Lift the panel to undo The front panel has 4 hooks. the hooks. Pull and remove the front panel. Hooks (R8534) Removal Procedure...
  • Page 98 SiBE01-829 Outdoor Unit Step Procedure Points 3. Remove the motor. The screw has clockwise winding. Unscrew the washer- fitted nut (M10) of the propeller fan with a spanner. Propeller fan (R8535) Remove the propeller Align mark of the fan. propeller fan with D-cut section of the motor shaft when reassembling.
  • Page 99 Outdoor Unit SiBE01-829 Step Procedure Points Loosen the screw No.5. (R8537) Disconnect the connectors. (R8538) Detach the fan motor lead wire. (R8539) Removal Procedure...
  • Page 100 SiBE01-829 Outdoor Unit Step Procedure Points Loosen the screw to remove the fan motor fixing frame. Fan motor fixing frame (R8565) When reassembling, fit the lower hook into the bottom frame. (R7206) Loosen the 2 fixing Put the lead wire through the hooks and release the back of the motor when lead wire.
  • Page 101 Outdoor Unit SiBE01-829 Step Procedure Points Loosen the 4 screws to AC fan motor remove the fan motor. Screws (R8541) Remove the fan motor. (R8542) Removal Procedure...
  • Page 102 SiBE01-829 Outdoor Unit Step Procedure Points 4. Remove the right side panel. Loosen the 2 screws on the rear side. (R8543) Loosen the 4 screws on the right side. Right side panel (R7210) Removal Procedure...
  • Page 103 Outdoor Unit SiBE01-829 Step Procedure Points Loosen the screw and lift the connection port to remove. (R8544) When reassembling, make sure to fit the hook. (R8545) Lift up the right side panel to remove. (R8546) Removal Procedure...

  • Page 104: Removal Of Solenoid Valve / Electrical Box

    SiBE01-829 Outdoor Unit Removal of Solenoid Valve 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 top panel. Disconnect the connector for fan motor. 1.
  • Page 105 Outdoor Unit SiBE01-829 Step Procedure Points Loosen the screw of the solenoid valve. (R8550) Remove the valve. (R8551) Loosen the nut (M8) to remove the terminal cover. (R8638) (R8552) Removal Procedure...
  • Page 106 SiBE01-829 Outdoor Unit Step Procedure Points Disconnect the connector. Blue (R) Purple (C) Red (S) (R8553) Loosen the two screws. (R8554) Undo the hook and lift Electrical box the electrical box. Hook (R8555) Removal Procedure...
  • Page 107 Outdoor Unit SiBE01-829 Step Procedure Points Remove the electrical box. (R8556) Removal Procedure...

  • Page 108: Removal Of Sound Blanket

    SiBE01-829 Outdoor Unit 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 outer panels. Remove the electrical box. 1. Remove the sound blanket.

  • Page 109: Removal Of Compressor

    Outdoor Unit SiBE01-829 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 1. Remove the compressor. Unscrew the nut (M13) of the compressor. Warning Ventilate when refrigerant leaks during the work.
  • Page 110 SiBE01-829 Outdoor Unit Step Procedure Points Remove the putty. Cautions for restoration 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 111 Outdoor Unit SiBE01-829 Removal Procedure...

  • Page 112: Part 8 Others

    SiBE01-829 Part 8 Others 1. Others ....................102 Trial Operation and Testing..............102 Pump Down Operation .................102 Others...

  • Page 113: Others

    Others SiBE01-829 1. Others Trial Operation and Testing 1. Measure the supply voltage and make sure that it falls in the specified range. 2. Trial operation should be carried out in either cooling or heating mode. In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable temperature.

  • Page 114: Part 9 Appendix

    SiBE01-829 Part 9 Appendix 1. Piping Diagrams..................104 1.1 Indoor Units ..................104 1.2 Outdoor Units ..................105 2. Wiring Diagrams..................107 2.1 Indoor Units ..................107 2.2 Outdoor Units ..................107 Appendix...

  • Page 115: Piping Diagrams

    Piping Diagrams SiBE01-829 Piping Diagrams Indoor Units FTYN25GXV1B, FTY25GXV1 FTYN35GXV1B, FTY35GXV1 INDOOR UNIT INDOOR UNIT HEAT EXCHANGER HEAT EXCHANGER 7.0CuT 7.0CuT 4.8CuT 4.8CuT THERMISTOR THERMISTOR 7.0CuT 7.0CuT ON HEAT EXCH. ON HEAT EXCH. 7.0CuT 7.0CuT CROSS FLOW FAN CROSS FLOW FAN FIELD PIPING FIELD PIPING (6.4CuT)

  • Page 116: Outdoor Units

    SiBE01-829 Piping Diagrams Outdoor Units RYN25GXV1B OUTDOOR UNIT HEAT EXCHANGER 7.0CuT 7.0CuT HEAT EXCHANGER THERMISTOR 6.4CuT CHECK VALVE 7.0CuT 6.4CuT 6.4CuT 6.4CuT MUFFLER CAPILLARY WITH TUBE 1 FILTER CAPILLARY TUBE 2 PROPELLER FAN 9.5CuT FOUR WAY VALVE FIELD PIPING ON:HEATING (6.4CuT) LIQUID STOP VALVE...
  • Page 117 FIELD PIPING ON:HEATING (6.4CuT) LIQUID STOP VALVE 9.5CuT FIELD PIPING REFRIGERANT FLOW COMPRESSOR (9.5CuT) GAS STOP COOLING ACCUMULATOR VALVE HEATING 3D060140 RY35GXV1 OUTDOOR UNIT HEAT EXCHANGER 7.0CuT 7.0CuT HEAT EXCHANGER THERMISTOR 6.4CuT 4.8CuT 6.4CuT 6.4CuT CHECK VALVE 4.8CuT 6.4CuT MUFFLER CAPILLARY...

  • Page 118: Wiring Diagrams

    SiBE01-829 Wiring Diagrams Wiring Diagrams Indoor Units FTYN25GXV1B, FTYN35GXV1B, FTY25GXV1, FTY35GXV1 Outdoor Units RYN25GXV1B, RYN35GXV1B, RY25GXV1, RY35GXV1 Appendix...
  • Page 119 Wiring Diagrams SiBE01-829 Appendix...
  • Page 120 SiBE01-829 Index Numerics A5 ..............45 A6 ..............47 00 ................43 C4 ..............48 3-minute standby ............24 C9 ..............49 F6 ..............50 J6 ..............48 A1 ................44 U0 ..............53 A5 ................45 UA ..............52 A6 ................47 adjusting the airflow direction .........32 air filter ..............22 F6 ................
  • Page 121 SiBE01-829 panel, removal of ............84 PCB, removal of .............72 personalize operation ..........36 piping diagrams ............104 power-airflow flap ...........14 POWERFUL operation ........21, 33 printed circuit board (PCB) control PCB .............11 display PCB .............11 problem symptoms and measures ......41 programme dry function .........18 pump down operation ...........102 QUIET operation ............34 remote controller ............29...
  • Page 122 FTYN25GXV1B ..........107 FTYN35GXV1B ..........107 fan motor or related abnormality ......47 RY25GXV1 ........... 107 freeze-up protection control, high pressure control or RY35GXV1 ........... 107 indoor heat exchanger thermistor abnormality 45 RYN25GXV1B ..........107 RYN35GXV1B ..........107 Hall IC check ............57 hardware error (tact switch pin short) .....52...
  • Page 123 SiBE01-829 Drawings & Flow Charts...
  • Page 124 Specifications, designs and other content appearing in this brochure are current as of June 2008 but subject to change without notice. SiBE 01-829 Printed in Japan 06/2008 B AK...

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