Daikin FTYN25DV3B ATY20DV2 Service Manual
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Daikin FTYN25DV3B ATY20DV2 Service Manual

Split pair d-series
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See also: Operating Manual , Installation Manual
SiBE01 - 503
SPLIT Pair
D-Series
[Applied Models]
Non-Inverter Pair : Heat Pump

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Summary of Contents for Daikin FTYN25DV3B ATY20DV2

  • Page 1 SiBE01 - 503 SPLIT Pair D-Series [Applied Models] Non-Inverter Pair : Heat Pump...
  • Page 2 SiBE01-503 Non Inverter Pair D-Series Heat Pump Indoor Unit FTYN25DV3B ATY20DV2 FTYN35DV3B ATY25DV2 ATY35DV2 Outdoor Unit RYN25DV3B ARY20DV2 RYN35DV3B ARY25DV2 ARY35DV2 Table of Contents...

  • Page 3: Table Of Contents

    SiBE01-503 1. Introduction .....................v 1.1 Safety Cautions ..................v 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. Printed Circuit Board Connector Wiring Diagram........10 1.1 Indoor Unit....................10 Part 4 Functions and Control............
  • Page 4 SiBE01-503 Part 6 Service Diagnosis............. 51 1. Caution for Diagnosis................52 2. Problem Symptoms and Measures ............53 3. Service Check Function ................54 4. Troubleshooting ..................57 4.1 Error Codes and Description ..............57 4.2 Indoor Unit PCB Abnormality ..............58 4.3 Freeze-up Protection Control or High Pressure Control......59 4.4 Fan Motor or Related Abnormality (AC motor)........61 4.5 Thermistor or Related Abnormality (Indoor Unit)........62 4.6 High Pressure Control in Cooling ............63...
  • Page 5 SiBE01-503 Index ..................... i Drawings & Flow Charts ............... iii Table of Contents...

  • Page 6: Introduction

    SiBE01-503 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: Cautions Regarding Products After Repair

    Introduction SiBE01-503 Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.

  • Page 8: Inspection After Repair

    SiBE01-503 Introduction Warning Be sure to use the specified cable to connect between the indoor and outdoor units. Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals. Improper connections can cause excessive heat generation or fire.

  • Page 9: Using Icons

    Introduction SiBE01-503 Warning Do not use a joined power cable or extension cable, or share the same power outlet with other electrical appliances, since it can cause an electrical shock, excessive heat generation or fire. Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure.

  • Page 10: Part 1 List Of Function

    SiBE01-503 Part 1 List of Function 1. Functions....................2 List of Function...

  • Page 11: Functions

    Functions SiBE01-503 Functions Category Functions Category Functions Air Purifying Filter with Bacteriostatic, Inverter (with Inverter Power Control) — — Virustatic Functions Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — Basic Function –10 Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 12 SiBE01-503 Functions Category Functions Category Functions Inverter (with Inverter Power Control) — Air Purifying Filter with Bacteriostatic, — Virustatic Functions Operation Limit for Cooling (°CDB) Basic Function –10 Operation Limit for Heating (°CWB) Photocatalytic Deodorizing Filter — Air Purifying Filter with Photocatalytic PAM Control —...
  • Page 13 Functions SiBE01-503 List of Function...

  • Page 14: Part 2 Specifications

    SiBE01-503 Part 2 Specifications 1. Specifications ..................6 Specifications...

  • Page 15: Specifications

    Specifications SiBE01-503 Specifications 50Hz 230V Indoor Units FTYN25DV3B FTYN35DV3B Models RYN25DV3B RYN35DV3B Outdoor Units Cooling Heating Cooling Heating 3.15 3.85 Capacity Btu/h 8,550 10,260 10,770 13,160 Rated (Min.~Max.) kcal/h 2,150 2,580 2,710 3,310 Moisture Removal — — Running Current (Rated) Power Consumption 1,200 1,290...
  • Page 16 SiBE01-503 Specifications 50Hz 220V Indoor Units ATY20DV2 ATY25DV2 Models ARY20DV2 ARY25DV2 Outdoor Units Cooling Heating Cooling Heating 1.95 Capacity Btu/h 6,700 7,900 8,500 9,600 kcal/h 1,680 1,980 2,150 2,410 Moisture Removal — — Running Current Power Consumption Power Factor 2.87 3.83 2.98 3.64...
  • Page 17 Specifications SiBE01-503 50Hz 220V Indoor Units ATY35DV2 Models ARY35DV2 Outdoor Units Cooling Heating Capacity Btu/h 11,300 13,000 kcal/h 2,840 3,270 Moisture Removal — Running Current Power Consumption 1,110 1,180 Power Factor 2.97 3.22 φ Liquid Piping φ 12.7 Connections φ Drain 18.0 Heat Insulation...

  • Page 18: Part 3 Printed Circuit Board Connector Wiring Diagram

    SiBE01-503 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 19: Printed Circuit Board Connector Wiring Diagram

    Printed Circuit Board Connector Wiring Diagram SiBE01-503 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 20: Control Pcb

    SiBE01-503 Printed Circuit Board Connector Wiring Diagram Control PCB LED A (R4670) Signal Receiver PCB LED1 LED2 (R4671) Printed Circuit Board Connector Wiring Diagram...
  • Page 21 Printed Circuit Board Connector Wiring Diagram SiBE01-503 Printed Circuit Board Connector Wiring Diagram...

  • Page 22: Part 4 Functions And Control

    SiBE01-503 Part 4 Functions and Control 1. Functions....................14 1.1 Power-Airflow Dual Flaps, 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 Night Set Mode..................19 1.7 POWERFUL Operation ................20 1.8 Other Functions..................21 2.

  • Page 23: Functions

    Functions SiBE01-503 1. Functions Power-Airflow Dual Flaps, Wide-Angle Louvers and Auto-Swing Power-Airflow The large flaps send a large volume of air downwards to the floor. The flap provides an optimum control area in cooling, heating and dry mode. Dual Flaps Heating Mode During heating mode, the large flap enables direct warm air straight downwards.

  • Page 24: Fan Speed Control For Indoor Units

    SiBE01-503 Functions Fan Speed Control for Indoor Units Control Mode The air flow 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 61.

  • Page 25: Thermostat Control

    Functions SiBE01-503 Thermostat Control Thermostat control is based on the difference between the room temperature and the setpoint. Cooling ≤ ° Thermostat OFF: Room temperature – setpoint ≥ ° Thermostat ON : Room temperature – setpoint Room temperature – setpoint 1˚C 0˚C (R4725)

  • Page 26: Automatic Operation

    SiBE01-503 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 27: Programme Dry Function

    Functions SiBE01-503 Programme Dry Function Outline Programme dry function removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and air flow rate, the temperature adjustment and fan adjustment buttons are inoperable in this mode. Details of the The microcomputer automatically sets the target temperature and fan setting (L tap).

  • Page 28: Night Set Mode

    SiBE01-503 Functions Night Set Mode When the OFF timer is set, the Night Set circuit automatically activates. The Night Set circuit maintains the airflow setting made by users. The Night Set The Night Set circuit continues heating or cooling the room at the set temperature for the first one hour, then automatically lowers the temperature setting slightly in the case of heating, or Circuit raises it slightly in the case of cooling, for economical operations.

  • Page 29: Powerful Operation

    Functions SiBE01-503 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. When POWERFUL button is pushed, the fan speed and the target temperature will be Details of the converted to the following states for 20 minutes.

  • Page 30: Other Functions

    SiBE01-503 Functions 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 air flow is stopped or is made very weak thereby carrying out comfortable heating of the room.

  • Page 31: Function Of Thermistor

    Function of Thermistor SiBE01-503 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 (DCB) Indoor Heat 1. The indoor heat exchanger thermistor is used to prevent freezing. Exchanger During the cooling operation, if the temperature drops abnormally, the operating frequency becomes lower, then the operation must be halted.

  • Page 32: Control Specification

    SiBE01-503 Control Specification 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 33: Heating Peak-Cut Control

    Control Specification SiBE01-503 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 63°C (FTYN models), 65°C (ATY models) While controlling The compressor halts.

  • Page 34: Defrost Control

    SiBE01-503 Control Specification 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 for 35 class Heating...
  • Page 35 Control Specification SiBE01-503 Functions and Control...

  • Page 36: Part 5 System Configuration

    SiBE01-503 Part 5 System Configuration 1. System Configuration................28 2. 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 Air Flow Direction .............39 2.6 POWERFUL Operation ................40 2.7 TIMER Operation ...................41 2.8 Care and Cleaning .................43...

  • Page 37: System Configuration

    System Configuration SiBE01-503 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 38: 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 39: Installation Site

    Instructions SiBE01-503 • 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. • Do not place anything under the indoor or outdoor unit that must be kept away from moisture. In certain conditions, moisture in the air may condense and drip.

  • Page 40: Names Of Parts

    SiBE01-503 Instructions Names of Parts Names of parts Indoor Unit System Configuration...

  • Page 41: Outdoor Unit

    Instructions SiBE01-503 Outdoor Unit Indoor Unit 1. Air filter 11. Indoor Unit ON/OFF switch: • Push this switch once to start operation. 2. Titanium Apatite Photocatalytic Push once again to stop it. Air-Purifying Filter: • This switch is useful when the remote controller •...

  • Page 42: Remote Controller

    SiBE01-503 Instructions Remote Controller < > ARC445A1 1. Signal transmitter: 6. MODE selector button: • It sends signals to the indoor unit. • It selects the operation mode. (AUTO/DRY/COOL/HEAT/FAN) (page 10.) 2. Display: • It displays the current settings. 7. FAN setting button: (In this illustration, each section is shown •...

  • Page 43: Preparation Before Operation

    Instructions SiBE01-503 Preparation before Operation Preparation Before Operation To set the batteries 1. Pull the tabs on top down and open the lid. 2. Set two dry batteries (AAA). 3. Insert the two tabs in the bottom of the lid and close the lid as it was before.
  • Page 44 SiBE01-503 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 control- ler, such as a curtain, the unit will not operate. •...
  • Page 45 Instructions SiBE01-503 Turn the breaker ON • Turning ON the breaker opens the flap, then closes it again. (This is a normal procedure.) NOTE Tips for saving energy • Be careful not to cool (heat) the room too much. Keeping the temperature setting at a moderate level helps save energy. Recommended temperature setting •...

  • Page 46: Auto • Dry • Cool • Heat • Fan Operation

    SiBE01-503 Instructions 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 47: Operation Mode

    Instructions SiBE01-503 To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode Three levels of air flow rate setting from “ ” to “ ” plus “ ” are available. The air flow rate setting is not variable.

  • Page 48: Adjusting The Air Flow Direction

    SiBE01-503 Instructions Adjusting the Air Flow Direction Adjusting the Air Flow Direction You can adjust the air flow direction to increase your com- fort. To adjust the horizontal blades (flaps) 1. Press “SWING button”. The display will light up and the flaps will begin to swing.

  • Page 49: Powerful Operation

    Instructions SiBE01-503 POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect. 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 50: Timer Operation

    SiBE01-503 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 1.

  • Page 51: To Use On Timer Operation

    Instructions SiBE01-503 ■ To use ON TIMER operation 1. Press “ON TIMER button”. The TIMER lamp lights up. • The time changes in 1 hour increments every time the button is pushed, with a maxi- mum of 12 hours. ■ To cancel ON TIMER operation 2.

  • Page 52: Care And Cleaning

    SiBE01-503 Instructions Care and Cleaning 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 53: Air Filter

    Instructions SiBE01-503 Filters 1. Open the front panel. (page 16.) 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the Titanium Apatite Pho- Titanium Apatite tocatalytic Air-Purifying Filter.

  • Page 54: Before A Long Idle Period

    SiBE01-503 Instructions Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded. Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation. •...

  • Page 55: Troubleshooting

    Instructions SiBE01-503 Troubleshooting 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 56: Check Again

    SiBE01-503 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 57: Disposal Requirements

    Instructions SiBE01-503 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. ■...

  • Page 58: Fault Diagnosis

    SiBE01-503 Instructions Fault diagnosis. FAULT DIAGNOSIS BY REMOTE CONTROLLER In the ARC445A series, the temperature display sections on the main unit indicate corresponding codes. 1. When the TIMER CANCEL button is held down for 5 seconds, a “ ” indication flashes on the temperature display section.
  • Page 59 Instructions SiBE01-503 System Configuration...

  • Page 60: Part 6 Service Diagnosis

    SiBE01-5033 Part 6 Service Diagnosis 1. Caution for Diagnosis................52 2. Problem Symptoms and Measures ............53 3. Service Check Function ................54 4. Troubleshooting ..................57 4.1 Error Codes and Description ..............57 4.2 Indoor Unit PCB Abnormality ..............58 4.3 Freeze-up Protection Control or High Pressure Control......59 4.4 Fan Motor or Related Abnormality (AC motor)........61 4.5 Thermistor or Related Abnormality (Indoor Unit)........62 4.6 High Pressure Control in Cooling ............63...

  • Page 61: Caution For Diagnosis

    Caution for Diagnosis SiBE01-503 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 62: Problem Symptoms And Measures

    SiBE01-503 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 63: Service Check Function

    Service Check Function SiBE01-503 3. Service Check Function The temperature display sections on the main unit indicate corresponding codes. Check Method 1 1. When the timer cancel button is held down for 5 seconds, a “00” indication flashes on the temperature display section.
  • Page 64 SiBE01-503 Service Check Function Check Method 2 1. Enter the diagnosis mode. Press the 3 buttons (TEMP ,TEMP , MODE) simultaneously. (R4735) The digit of the number of tens blinks. Try again from the start when the digit does not blink. (R4736) 2.
  • Page 65 Service Check Function SiBE01-503 The digit of the number of units blinks. (R4739) 5. Press the TEMP button. Press TEMP or TEMP and change the digit until you hear the sound of “beep”. (R4737) 6. Diagnose by the sound. “ pi ” : The both numbers of tens and units do not accord with the error code. “...

  • Page 66: Troubleshooting

    SiBE01-503 Troubleshooting Troubleshooting Error Codes and Description Reference Code Description Page System Normal — Indoor Indoor unit PCB abnormality Unit Freeze-up protection control or high pressure control Fan motor or related abnormality (AC motor) Heat exchanger thermistor abnormality Room temperature thermistor abnormality Outdoor High pressure control in cooling Unit...

  • Page 67: Indoor Unit Pcb Abnormality

    Troubleshooting SiBE01-503 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 Conditions Supposed Faulty indoor unit PCB Faulty connector connection Causes Troubleshooting...

  • Page 68: Freeze-Up Protection Control Or High Pressure Control

    SiBE01-503 Troubleshooting Freeze-up Protection Control High Pressure Control Remote Controller Display Method of High pressure control Malfunction During heating operations, the temperature detected by the indoor heat exchanger 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 SiBE01-503 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Check the air passage. Refer to P.67 Is there any Provide sufficient air passage. short-circuit? Check the intake air filter. Is it very dirty? Clean the air filter.

  • Page 70: Fan Motor Or Related Abnormality (Ac Motor)

    SiBE01-503 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 rotation demand.

  • Page 71: Thermistor Or Related Abnormality (Indoor Unit)

    Troubleshooting SiBE01-503 Thermistor or Related Abnormality (Indoor Unit) Remote Controller Display Method of The temperatures detected by the thermistors are used to determine thermistor errors. Malfunction Detection Malfunction When the thermistor input is more than 4.96 V or less than 0.04 V during compressor ∗...

  • Page 72: High Pressure Control In Cooling

    SiBE01-503 Troubleshooting High Pressure Control in Cooling Remote Controller Display Method of High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the temperature being sensed by the heat exchanger thermistor exceeds the limit. Malfunction Detection Malfunction Activated when the temperature being sensed by the heat exchanger thermistor rises above 63°C (RYN models) or 65°C (ARY models).
  • Page 73 Troubleshooting SiBE01-503 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Check the installation space. Refer to P.67 Check No.07 Abnormal Check No.07 Installation condition Change the air outlet grille check position.

  • Page 74: Thermistor Or Related Abnormality (Outdoor Unit)

    SiBE01-503 Troubleshooting Thermistor or Related Abnormality (Outdoor Unit) Remote Controller Display Method of This type of error is detected by checking the thermistor input voltage to the microcomputer. [A thermistor error is detected by checking the temperature.] Malfunction Detection Malfunction The thermistor input is above 4.96 V or below 0.04 V with the power on.
  • Page 75 Troubleshooting SiBE01-503 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Turn on the power again. Refer to P.67 Error displayed again Reconnect. on remote controller? Connector or thermistor Reconnect.

  • Page 76: Check

    SiBE01-503 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 77: Installation Condition Check

    Check SiBE01-503 Installation Condition Check Check No.07 Installation condition check Check the allowable Abnormal Change the position of the air dimensions of the air suction discharge grille or the and discharge area. installation location. Normal Does the discharged air from other outdoor Change the position of the air unit cause an increase of discharge grille or the...

  • Page 78: Outdoor Unit Fan System Check

    SiBE01-503 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 79 Check SiBE01-503 Service Diagnosis...

  • Page 80: Part 7 Removal Procedure

    SiBE01-503 Part 7 Removal Procedure 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 2.

  • Page 81: Indoor Unit

    Indoor Unit SiBE01-503 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. External features If ON/OFF button is kept pushing for 5 seconds, a forced cooling operation will be carried out for approx.
  • Page 82 SiBE01-503 Indoor Unit Step Procedure Points 3. Remove the front panel. Hook a finger onto the Support the front panel by one projection part provided hand, while remove the rotation on the both sides of the axis at the upper center by the unit’s panel and open other hand.
  • Page 83 Indoor Unit SiBE01-503 Step Procedure Points When restoring the air filter, make sure that the projection parts on the panel are in the guide groove, and then shut the panel. Removal Procedure...

  • Page 84: Removal Of Front Grille

    SiBE01-503 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. Remove the service cover. Remove a service cover mounting screw. Open service cover upward.
  • Page 85 Indoor Unit SiBE01-503 Step Procedure Points 2. Remove the front grille assembly. Remove the two Screw stoppers inside the screws, in the right and flap which were equipped in the left, which fix the the existing models are not main body with the front provided.
  • Page 86 SiBE01-503 Indoor Unit Step Procedure Points The front grille can be When restoring the grille, removed in a manner to Make sure whether each pull out the upper part hook is set as it was. forward and lift up the lower part.

  • Page 87: Removal Of Horizontal Blades / Vertical Blades

    Indoor Unit SiBE01-503 Removal of Horizontal Blades / Vertical Blades Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the horizontal blades. Lift horizontal blade to Screw stoppers inside the open position.
  • Page 88 SiBE01-503 Indoor Unit Step Procedure Points For restoring. 1. Since the key pattern hook is provided on the left side, insert the edge of the blade to the tip while rotating it. 2. Restore the two fixed parts of the horizontal blade onto the hook.

  • Page 89: Removal Of Electrical Parts Box / Pcb / Swing Motor

    Indoor Unit SiBE01-503 Removal of Electrical Parts Box / 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 Remove the front grill. 1. Remove the electrical parts box.
  • Page 90 SiBE01-503 Indoor Unit Step Procedure Points Remove a screw on the The electrical parts box can terminal strip. be removed instead of disengaging the terminal strip. Remove a screw on the electrical parts box. Removal Procedure...
  • Page 91 Indoor Unit SiBE01-503 Step Procedure Points Pull up the electrical A hook is provided on the parts box forward to behind. remove. Removal Procedure...
  • Page 92 SiBE01-503 Indoor Unit Step Procedure Points 2. Remove the printed circuit board (PCB). Remove the shelter. Disengage the front plate of the electrical parts box. Disengage the knobs by pushing the two hooks at the top and the bottom. Sliding to the left, the front part of the electrical parts box can be removed.
  • Page 93 Indoor Unit SiBE01-503 Step Procedure Points Disengage the four knobs on the back of signal receiver PCB. Signal receiver PCB Removal Procedure...
  • Page 94 SiBE01-503 Indoor Unit Step Procedure Points Control PCB The control printed circuit board is integrated with the power supply printed circuit board. LED A (R4673) 3. Remove the swing motor assembly. To remove swing motor assembly, remove two screws. (Manual adjusting for the vertical blades.) Provide a supporter so that the joint link will not drop off,...

  • Page 95: Removal Of Heat Exchanger

    Indoor Unit SiBE01-503 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 Conduct pump-down Warning operation. If gas leaks, repair the leak Remove the installation location, then connect all frame from the mounting refrigerant from the unit.
  • Page 96 SiBE01-503 Indoor Unit Step Procedure Points Disengage the hooks of the pipe retainer on the back. Pull auxiliary pipe Be careful to prevent pipe forward to an angle of deformation. 10 to 20 degrees. Disengage hooks located right and left side, and pull heat exchanger forward.
  • Page 97 Indoor Unit SiBE01-503 Step Procedure Points Lift and remove heat exchanger. Caution When removing or re- installing heat exchanger, be sure to wear protective gloves or wrap heat exchanger with cloths. (Fins can cut fingers.) Removal Procedure...

  • Page 98: Install Of Drain Plug

    SiBE01-503 Indoor Unit Install of Drain Plug Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Disconnect drain hose. The drain pan is integrated with the bottom plate. Pull out the drain plug in the left on the drain pan by hand.

  • Page 99: Removal Of Fan Rotor / Fan Motor

    Indoor Unit SiBE01-503 Removal of Fan Rotor Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the heat exchanger. To remove right side panel, remove three screws.
  • Page 100 SiBE01-503 Indoor Unit Step Procedure Points Disengage hook. Loosen the hexagon head set screw on the fan rotor. Removal Procedure...
  • Page 101 Indoor Unit SiBE01-503 Step Procedure Points Remove the motor and fan rotor. Remove a screw on the left side panel. Removal Procedure...
  • Page 102 SiBE01-503 Indoor Unit Step Procedure Points Disengage a hook from the backward. Since the fan bearing is made of rubber, push it strongly off from the inside. The bearing can be removed just as the left-side plate is attached with. Removal Procedure...

  • Page 103: Outdoor Unit

    Outdoor Unit SiBE01-503 2. Outdoor Unit Removal of Panels Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Step stop valve cover can be removed when the fixed screw is removed.
  • Page 104 SiBE01-503 Outdoor Unit Step Procedure Points top plate and the front plate constructed in a monoblock. Remove the three screws at the right side and the two screws at the front plate. Remove the three screws at the left side. Remove the one fixed left side plate and the...

  • Page 105: Removal Of Bellmouth And Left Side Plate

    Outdoor Unit SiBE01-503 Removal of Bellmouth and Left Side Plate Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points The bellmouth is Remove the bellmouth, attached with two beginning the front plate screws and four hooks.

  • Page 106: Removal Of Electrical Device Mounting Plate

    SiBE01-503 Outdoor Unit Removal of Electrical Device Mounting Plate Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. To remove the shelter. Remove the three fixed screws for removing the shelter.

  • Page 107: Removal Of Propeller Fan And Fan Motor

    Outdoor Unit SiBE01-503 Removal of Propeller Fan and Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points The propeller fan can Be sure to avoid forgetting to be removed when the restore the shelter and to washer faced nut...

  • Page 108: Removal Of Sound Blanket

    SiBE01-503 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 1. To remove the right side plate. Remove the three screws for removing the right side plate.
  • Page 109 Outdoor Unit SiBE01-503 Step Procedure Points Pull out the sound blanket. (R4750) Since the sound blanket is torn easily, remove it carefully. When restoring, sound blanket should pass the internal side of the piping. Removal Procedure...

  • Page 110: Removal Of Partition Plate

    SiBE01-503 Outdoor Unit Removal of Partition Plate Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. To remove the partition plate. Disengage the lead wires from the wire clip. Remove the two screws fixing the partition plate.
  • Page 111 Outdoor Unit SiBE01-503 Step Procedure Points When restoring the partition plate, put the hook into the bottom frame. Removal Procedure...

  • Page 112: Removal Of Compressor

    SiBE01-503 Outdoor Unit 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. To remove the parts Be careful so as not to burn around the compressor.
  • Page 113 Outdoor Unit SiBE01-503 Step Procedure Points The compressor’s mounting nut to be removed is one piece. Remove the nut by means of an open-end wrench. Warning Since it may happen that Begin your work after refrigeration oil in the recognizing complete compressor will catch fire, empty of refrigerant in the prepare wet cloth so as to...

  • Page 114: Part 8 Others

    SiBE01-503 Part 8 Others 1. Others ....................106 1.1 Trial Operation and Testing..............106 1.2 Pump Down Operation .................106 1.3 Jumper Settings ...................107 Others...

  • Page 115: Others

    Others SiBE01-503 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 116: Jumper Settings

    SiBE01-503 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 117 Others SiBE01-503 Others...

  • Page 118: Part 9 Appendix

    SiBE01-503 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 119: Piping Diagrams

    Piping Diagrams SiBE01-503 1. Piping Diagrams Indoor Units FTYN25DV3B, FTYN35DV3B ATY20DV2, ATY25DV2 INDOOR UNIT INDOOR UNIT HEAT EXCHANGER 7. 0CuT HEAT EXCHANGER 4. 8CuT 7. 0CuT 7. 0CuT THERMISTOR 7. 0CuT THERMISTOR ON HEAT EXCH. 7. 0CuT ON HEAT EXCH. 7.
  • Page 120 1 / 3 Feb. 26, 2007 M-06010 Reliable technology ensures maximum customer satisfaction. Delete outdoor temperature thermistor from Case drawing – SiBE01-503 RYN25DV3B, RYN35DV3B, Model ARY20DV2, ARY25DV2, ARY35DV2 Delete the outdoor temperature thermistor from the service manual SiBE01-503 on page 111 and 112. Refer to the attached pages.

  • Page 121: Outdoor Units

    SiBE01-503 Piping Diagrams Outdoor Units RYN25DV3B, RYN35DV3B OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE 7. 9CuT THERMISTOR 7. 9CuT HEAT EXCHANGER THERMISTOR CAPILLARY CHECK VALVE TUBE 1 7. 9CuT CAPILLARY TUBE 2 PROPELLER FAN 9. 5CuT FOUR WAY FIELD PIPING VALVE (6.
  • Page 122 Piping Diagrams SiBE01-503 ARY35DV2 OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE 7. 9CuT THERMISTOR 7. 9CuT HEAT EXCHANGER THERMISTOR CAPILLARY CHECK VALVE TUBE 1 7. 9CuT CAPILLARY TUBE 2 PROPELLER FAN 9. 5CuT FOUR WAY FIELD PIPING VALVE (6. 4CuT) LIQUID ON : HEATING STOP VALVE 9.

  • Page 123: Wiring Diagrams

    SiBE01-503 Wiring Diagrams 2. Wiring Diagrams Indoor Units FTYN25DV3B, FTYN35DV3B, ATY20DV2, ATY25DV2, ATY35DV2 PCB1 GRN/YLW 2.0A 2.0A → → outdoor PCB2 3.15A LED1 LED2 TFu102°C WHT BLK SIGNAL X10A RECEIVER t° : SWING MOTOR FIELD WIRING. PCB1, PCB2 : PRINTED CIRCUIT BOARD R1T, R2T : THERMISTOR CAUTION...
  • Page 124 Wiring Diagrams SiBE01-503 ARY35DV2 outdoor indoor 3.15A GRN/YLW POWER SUPPLY ~220V 50Hz t° X10A FIELD WIRING. NOTE 1.REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS. C1R, C2R : RUNNING CAPACITOR X10A : CONNECTOR : COMPRESSOR MOTOR X1M,X2M : TERMINAL STRIP : FAN MOTOR : REVERSING SOLENOIDE VALVE COIL : THERMISTOR...
  • Page 125 SiBE01-503 Index Numerics C9 ..............62 F6 ..............63 00 ................57 J6 ..............65 3-minutes standby ..........21, 23 F6 ................63 A1 ................58 fan motor ........... 80, 90, 98 A5 ................59 fan off delay ............23 A6 ................61 fan rotor ..............90 address setting jumper ...........10 fan speed control ...........
  • Page 126 SiBE01-503 left side plate ............95, 96 switch box ............. 97 liquid compression protection function 2 ....24 liquid piping ............86 terminal strip ............ 58, 81 thermistor mold proof air filter ..........21 function ............22 heat exchanger thermistor ......80 indoor heat exchanger thermistor ..... 22, 62 names of parts ............31 outdoor heat exchanger thermistor ...
  • Page 127 SiBE01-503 Drawings & Flow Charts air flow rate control ..........15 signal receiver PCB ..........11 automatic operation ..........17 auto-swing ..............14 thermistor .............. 22 thermistor or related abnormality (indoor unit) ..62 compressor protection function ......23 thermistor or related abnormality (outdoor unit) ..65 control PCB ............11 thermistor resistance check ........
  • Page 128 Improper installation can result in water or refrigerant leakage, electrical shock, fire or explosion. Use only those parts and accessories supplied or specified by Daikin. Ask a qualified installer or contractor to install those parts and accessories. Use of unauthorized parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage, electrical shock, fire or explosion.

This manual is also suitable for:

Ftyn35dv3bRyn25dv3bRyn35dv3bFtyn35dv3b aty35dv2Ryn35dv3b ary35dv2Aty20dv2 ... Show all

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