Daikin FTYN25GXV1B Service Manual
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Daikin FTYN25GXV1B Service Manual

Split pair/wall mounted
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See also: Installation Manual
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 FTYN25GXV1B

  • 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 Part 6 Service Diagnosis............. 51 1. Caution for Diagnosis................52 2. Problem Symptoms and Measures ............53 3. Service Check Function ................54 4. Troubleshooting ..................55 4.1 Error Codes and Description ..............55 4.2 Indoor Unit PCB Abnormality ..............56 4.3 Freeze-up Protection Control, High Pressure Control or Indoor Heat Exchanger Thermistor Abnormality ........57 4.4 Fan Motor or Related Abnormality (AC motor)........59 4.5 Thermistor or Related Abnormality............60...
  • Page 5 SiBE01-829 2. Wiring Diagrams..................113 2.1 Indoor Units ..................113 2.2 Outdoor Units ..................113 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: Part 1 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 Rated (Min.~Max.) Power Factor 98.5...
  • Page 18 SiBE01-829 Specifications 50Hz 220V Indoor Units FTY25GXV1 FTYN35GXV1 Models RY25GXV1 RYN35GXV1 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 96.7 3.01...
  • 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 Connector for fan motor 2) S2, Connector for transformer Connector for thermal fuse Connector for swing motor (horizontal blades) Connector for fan motor (Hall IC) Connector for control PCB Connector for signal receiver PCB Connector for indoor heat exchanger thermistor...
  • Page 22 SiBE01-829 Printed Circuit Board Connector Wiring Diagram Control PCB NOT FIXED LED A (R4670) Signal Receiver PCB LED1 LED2 (R4671) 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 59.

  • 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 ≥ +1.5 ° 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 Safety Precautions .................29 2.2 Names of Parts..................31 2.3 Preparation Before Operation ..............34 2.4 AUTO • DRY • COOL • HEAT • FAN Operation ........37 2.5 Adjusting the Airflow Direction..............39 2.6 POWERFUL Operation ................40 2.7 QUIET Operation..................41 2.8 TIMER Operation ...................42...

  • 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

    • Do not attempt to repair, relocate, modify or reinstall the air conditioner by yourself. Incorrect work will cause electric shocks, fire etc. For repairs and reinstallation, consult your Daikin dealer for advice and information. • The refrigerant used in the air conditioner is safe. Although leaks should not occur, if for some reason any refrigerant happens to leak into the room, make sure it does not come in contact with any flame as of gas heaters, kerosene heaters or gas range.

  • Page 41: Installation Site

    Instructions SiBE01-829 • Do not block air inlets nor outlets. Impaired air flow may result in insufficient performance or trouble. • Do not stand or sit on the outdoor unit. Do not place any object on the unit to avoid injury, do not remove the fan guard. •...

  • Page 42: Names Of Parts

    SiBE01-829 Instructions Names of Parts Names of parts Indoor Unit ON/OFF Operation Manual...

  • Page 43: Outdoor Unit

    Instructions SiBE01-829 Outdoor Unit Indoor Unit 1. Air filter 11. Indoor Unit ON/OFF switch: • Push this switch once to start operation. 2. Air purifying filter with bacteriostatic, Push once again to stop it. virustatic functions: • The operation mode refers to the following •...

  • Page 44: Remote Controller

    SiBE01-829 Instructions 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 ˚ with all its displays ON for the purpose of AUTO explanation.) 3.

  • Page 45: Preparation Before Operation

    Instructions SiBE01-829 Preparation Before Operation Preparation Before Operation To set the batteries ˚ ˚ 1. Slide the battery cover by pulling it AUTO according to the arrow direction. 2. Insert new batteries making sure that the (+) and (–) of battery are installed correctly. 3.
  • Page 46 SiBE01-829 Instructions Preparation Before Operation To operate the remote controller • To use the remote controller, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote controller, such as a curtain, the unit will not operate.

  • Page 47: Tips For Saving Energy

    Instructions SiBE01-829 To set the clock 1. Hold down “ ” or “ ” button for 2 seconds. û ˚ AUTO 2. Press “ ” button to increase the clock time. 3. Press “ ” button to decrease the clock time. 4.

  • Page 48: Auto · Dry · Cool · Heat · Fan Operation

    SiBE01-829 Instructions 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 49 Instructions SiBE01-829 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 50: Adjusting The Airflow Direction

    SiBE01-829 Instructions 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 51: Powerful Operation

    Instructions SiBE01-829 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 52: Quiet Operation

    SiBE01-829 Instructions 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 53: Timer Operation

    Instructions SiBE01-829 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 54: Personalize Operation

    SiBE01-829 Instructions 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 55: Sleep Operation

    Instructions SiBE01-829 2.10 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 56: Care And Cleaning

    SiBE01-829 Instructions 2.11 Care and Cleaning CARE Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. Front panel 1.

  • Page 57: Air Filter

    Instructions SiBE01-829 Filters 1. Open the front panel. (page 18.) Recess on • Hold the panel at the recesses on the main unit main unit (2 recesses on right and left sides) and lift it until it stops. 2. Pull out the air filters. •...

  • Page 58: Before A Long Idle Period

    SiBE01-829 Instructions [ Maintenance ] 1. Remove dust with a vacuum cleaner and wash lightly with water. 2. If it is very dirty, soak it for 10 to 15 minutes in water mixed with a neutral cleaning agent. 3. Do not remove filter from frame when washing with water. 4.

  • Page 59: Troubleshooting

    Instructions SiBE01-829 2.12 Troubleshooting TROUBLE SHOOTING Trouble Shooting These cases are not troubles. The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Explanation Operation does not start soon. • This is to protect the air conditioner. •...

  • Page 60: Sibe01

    SiBE01-829 Instructions Check again. Please check again before calling a repair person. Case Check The air conditioner does not • Hasn’t a breaker turned OFF or a fuse blown? operate. • Isn’t it a power failure? (OPERATION lamp is off.) •...

  • Page 61: Disposal Requirements

    Instructions SiBE01-829 Call the service shop immediately. WARNING When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner. Do not attempt to repair or modify the air conditioner by yourself.

  • Page 62: Part 6 Service Diagnosis

    SiBE01-829 Part 6 Service Diagnosis 1. Caution for Diagnosis................52 2. Problem Symptoms and Measures ............53 3. Service Check Function ................54 4. Troubleshooting ..................55 4.1 Error Codes and Description ..............55 4.2 Indoor Unit PCB Abnormality ..............56 4.3 Freeze-up Protection Control, High Pressure Control or Indoor Heat Exchanger Thermistor Abnormality ........57 4.4 Fan Motor or Related Abnormality (AC motor)........59 4.5 Thermistor or Related Abnormality............60...

  • Page 63: 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 64: 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 65: Service Check Function

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

  • Page 66: 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 67: Indoor Unit Pcb Abnormality

    Troubleshooting SiBE01-829 Indoor Unit PCB Abnormality Remote Controller Display Method of Evaluation of zero-cross detection of power supply by indoor unit. Malfunction Detection Malfunction When there is no zero-cross detection in approximately 1.25 continuous seconds. Decision NOT FIXED Conditions Supposed Faulty indoor unit PCB Causes Faulty connector connection...

  • Page 68: 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 69 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.67 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 70: 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 detected rotation speed is less than 50% of each tap under maximum fan motor NOT FIXED rotation demand.

  • Page 71: 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 0.04 V or less during compressor operation ∗...
  • Page 72 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 4.96 V or more, or 0.04 V or less during compressor operation ∗...

  • Page 73: High Pressure Control In Cooling Or

    Troubleshooting SiBE01-829 High Pressure Control in Cooling or 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...
  • Page 74 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.67 Check the stop valve. Check No.07 Is it opened? Open the stop valve. Refer to P.68 Check No.09 Check the installation space.

  • Page 75: Hardware Error (Tact Switch Pin Short)

    Troubleshooting SiBE01-829 Hardware Error (Tact Switch Pin Short) Remote Controller Display Method of The supply power is detected for its requirement (different from pair type and multi type) by the Malfunction indoor / outdoor transmission signal. Detection Malfunction The pair type and multi type are interconnected. Decision Conditions Supposed...

  • Page 76: 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 77 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.67 Is thermistor Replace in position. disconnected? * Indoor heat exchanger thermistor Stop valve closed? Open the stop valve.

  • Page 78: 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 79: 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 80: 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 81 Check SiBE01-829 Service Diagnosis...

  • Page 82: Part 7 Removal Procedure

    SiBE01-829 Part 7 Removal Procedure NOT FIXED 1. Indoor Unit.....................72 1.1 Removal of Air Filter................72 1.2 Removal of Front Grille ................75 1.3 Removal of Horizontal Blades / Vertical Blades ........78 1.4 Removal of Electrical Parts Box / PCB / Swing Motor......80 1.5 Removal of Heat Exchanger ..............86 1.6 Install of Drain Plug ................89 1.7 Removal of Fan Rotor / Fan Motor............90...

  • Page 83: Indoor Unit

    SiBE01-829 Part 8 Others 1. Others ....................106 Trial Operation and Testing..............106 Pump Down Operation .................106 Jumper Settings ...................107 Others...
  • Page 84 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 85 SiBE01-829 Others Jumper Settings 1.3.1 When Two Units are Installed in One Room How to set the different addresses. When two indoor units are installed in one room, the two wireless remote controllers can be set for different addresses. PCB in the indoor unit Remove the front panel.

  • Page 86: Removal Of Front Grille

    Others SiBE01-829 Others...
  • Page 87 SiBE01-829 Part 9 Appendix 1. Piping Diagrams..................110 1.1 Indoor Units ..................110 1.2 Outdoor Units ..................111 2. Wiring Diagrams..................113 2.1 Indoor Units ..................113 2.2 Outdoor Units ..................113 Appendix...
  • Page 88 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...

  • Page 89: Removal Of Horizontal Blades / Vertical Blades

    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 90 Piping Diagrams SiBE01-829 RY25GXV1 OUTDOOR UNIT HEAT EXCHANGER 7.0CuT 7.0CuT HEAT EXCHANGER THERMISTOR 6.4CuT CHECK VALVE 7.0CuT 6.4CuT 6.4CuT MUFFLER 6.4CuT CAPILLARY WITH TUBE 1 FILTER CAPILLARY TUBE 2 PROPELLER FAN 9.5CuT FOUR WAY VALVE FIELD PIPING ON:HEATING (6.4CuT) LIQUID STOP VALVE 9.5CuT FIELD PIPING...

  • Page 91: Removal Of Electrical Parts Box / Pcb / Swing Motor

    SiBE01-829 Wiring Diagrams Wiring Diagrams Indoor Units FTYN25GXV1B, FTYN35GXV1B, FTY25GXV1, FTY35GXV1 Outdoor Units RYN25GXV1B, RYN35GXV1B, RY25GXV1,RY35GXV1 Appendix...
  • Page 92 Wiring Diagrams SiBE01-829 Appendix...
  • Page 93 SiBE01-829 Index Numerics C9 ..............68 F6 ..............69 00 ................63 J6 ..............71 3-minutes standby ..........27, 29 F6 ................69 A1 ................64 fan motor ..........86, 96, 104 A5 ................65 fan off delay ............29 A6 ................67 fan rotor ..............96 address setting jumper ...........16 fan speed control ...........
  • Page 94 SiBE01-829 left side plate ..........101, 102 switch box ............103 liquid compression protection function ....30 liquid piping ............92 terminal strip ............ 64, 87 thermistor mold proof air filter ..........27 function ............28 heat exchanger thermistor ......86 indoor heat exchanger thermistor ..... 28, 68 names of parts ............37 outdoor heat exchanger thermistor ...
  • Page 95 SiBE01-829 Drawings & Flow Charts RN35DAV3B ..........117 RN35DV3B ........... 117 air flow rate control ..........21 RYN25DAV3B ..........117 automatic operation ..........23 RYN25DV3B ..........117 auto-swing ..............20 RYN35DAV3B ..........117 RYN35DV3B ..........117 POWERFUL operation .......... 26 control PCB ............17 programme dry function ........
  • Page 96 SiBE01-829 Drawings & Flow Charts...

  • Page 97: Removal Of Heat Exchanger

    Specifications, designs and other content appearing in this brochure are current as of May 2008 but subject to change without notice. SiBE 01-829 Printed in Japan 05/2008 B AK...

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