Daikin FTXR28EV1B9 Service Manual
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Daikin FTXR28EV1B9 Service Manual

2.8/4.2/5.0 kw class
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Si04-756
REMOVAL
PROCEDURE
S E R V I C E
M A N U A L
2.8/4.2/5.0 kW Class
Indoor Unit
Inverter
Wall Mounted Type

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Summary of Contents for Daikin FTXR28EV1B9

  • Page 1 Si04-756 REMOVAL PROCEDURE S E R V I C E M A N U A L 2.8/4.2/5.0 kW Class Indoor Unit Inverter Wall Mounted Type...
  • Page 2 Service Manual Removal Procedure Indoor Unit Heat Pump FTXR28EV1B9 FTXR42EV1B9 FTXR50EV1B9 FTXR28FVLT FTXR50FVLT...

  • Page 3: Table Of Contents

    Si04-756 Table of Contents 1. Removal of Air Filters / Front panel............2 2. Removal of Upper Panel .................8 3. Removal of Front Grille .................11 4. Removal of Front Panel Mechanism Assembly ........14 5. Removal of Reduction Motor Assembly ..........16 6. Removal of Electrical Box ..............19 7.

  • Page 4: Removal Of Air Filters / Front Panel

    Removal of Air Filters / Front panel Si04-756 1. Removal of Air Filters / Front panel Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. External appearance Multi-colored indicator lamp changes its color according to the operation mode.
  • Page 5 Si04-756 Removal of Air Filters / Front panel Step Procedure Points Keep the front panel Support point open with the support plate. Support plate (R5624) Push the center part of the air filter up to Hook unfasten the 2 hooks. (R5625) Remove the air filter.
  • Page 6 Removal of Air Filters / Front panel Si04-756 Step Procedure Points 3. Remove the deodorizing filter for streamer. Pull the center knob to unfasten the hook. (R5629) Pull out the deodorizing filter for streamer. Deodorizing filter for streamer (R13946) Unfasten the 3 hooks. When cleaning, keep the filter with the frame for prevention of breakage.
  • Page 7 Si04-756 Removal of Air Filters / Front panel Step Procedure Points 4. Remove the electrode unit. Pull down the electrode Electrode unit unit with holding the knob. (R13947) 5. Remove the Titanium apatite photocatalytic air- purifying filter. Unfasten the projection of the frame of Titanium apatite photocatalytic air-...
  • Page 8 Removal of Air Filters / Front panel Si04-756 Step Procedure Points (R5637) 6. Remove the air supply Insert the filter along the filter. guide for easy installation. Air supply filter Lift the air supply filter Install the air supply filter up and take it out.
  • Page 9 Si04-756 Removal of Air Filters / Front panel Step Procedure Points Push the panel stoppers outward on both sides to detach the rotary shafts from the holes. Rotary shaft Panel stopper (R5641) Slide the rotary shaft on the left to the right and pull it out.

  • Page 10: Removal Of Upper Panel

    Removal of Upper Panel Si04-756 2. Removal of Upper Panel Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the service cover. Remove the screw (black) of the service cover.
  • Page 11 Si04-756 Removal of Upper Panel Step Procedure Points 2. Remove the upper panel. The upper panel has 3 Upper panel Part B Part A hooks at the front. Part C (R13951) In part A, pinch and Part A unfasten the hook. (R5649) In part B, pinch and unfasten the hook as in...
  • Page 12 Removal of Upper Panel Si04-756 Step Procedure Points In part C, lift the right and left sides to bend Part C Hook in front the upper panel and slightly pull it to unfasten the hook. Hook Hook (R18489) Pull the upper panel When reassembling, make and remove it.

  • Page 13: Removal Of Front Grille

    Si04-756 Removal of Front Grille 3. Removal of Front Grille Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the front grille. Remove the 3 screws. Hook Unfasten the upper 3 hooks.
  • Page 14 Removal of Front Grille Si04-756 Step Procedure Points Remove the front grille. (R5657) 2. Points on installing the When reassembling, make front grille sure that the horizontal blade (large) does not come When reassembling inside. the front grille, fit the 4 lower hooks and push When reassembling, follow in until they click.
  • Page 15 Si04-756 Removal of Front Grille Step Procedure Points The front panel mechanism assembly is fixed to the front grille. Check that the arm is in the stored position. Front panel mechanism assembly (R13954) Installation structure (R5662) Movement of the arm (R5663) Removal Procedure...

  • Page 16: Removal Of Front Panel Mechanism Assembly

    Removal of Front Panel Mechanism Assembly Si04-756 4. Removal of Front Panel Mechanism Assembly Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the front panel Preparation mechanism assembly Remove the front grille...
  • Page 17 Si04-756 Removal of Front Panel Mechanism Assembly Step Procedure Points 2. Remove the front panel mechanism assembly (left). Pull out the shaft from the front panel mechanism assembly (left). Front panel mechanism assembly (left) (R13957) Remove the 2 screws. (R5668) Remove the front panel Replace the front panel mechanism assembly...

  • Page 18: Removal Of Reduction Motor Assembly

    Removal of Reduction Motor Assembly Si04-756 5. Removal of Reduction Motor Assembly Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the reduction motor assembly. Reduction motor assembly Disconnect the relay connector for the...
  • Page 19 Si04-756 Removal of Reduction Motor Assembly Step Procedure Points Cut the clamp. (R5674) Slide the cover to the right to unfasten the hook. Hook (R5675) Lift the cover of the reduction motor up Hook slightly to unfasten the upper hook, and remove it.
  • Page 20 Removal of Reduction Motor Assembly Si04-756 Step Procedure Points Pull the gear out to remove. Remove the screw of the reduction motor. (R5677) Turn the reduction motor assembly over and peel off the tape. (R5678) Remove the reduction The connector of the motor.

  • Page 21: Removal Of Electrical Box

    Si04-756 Removal of Electrical Box 6. Removal of Electrical Box Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Disconnect the Electrical box cover connectors. Open the electrical box cover.
  • Page 22 Removal of Electrical Box Si04-756 Step Procedure Points Disconnect the connector for the Dehumidifying solenoid valve coil dehumidifying solenoid valve coils [S43]. [S43] (R14155) Disconnect the connector for the streamer unit PCB [S52] [S52]. (R5685) Disconnect the The connector [S41] is for connector for the swing both horizontal blades and motors [S41].
  • Page 23 Si04-756 Removal of Electrical Box Step Procedure Points Disconnect the connector for the fan motor [S1] and release the lead wire from the hook. [S1] (R14157) Hook (R5688) Removal Procedure...
  • Page 24 Removal of Electrical Box Si04-756 Step Procedure Points Remove the screw and remove the drip proof cover. Drip proof cover (R5689) Remove the 2 screws of the earth wires. (R5690) Pull out the indoor heat Be careful not to lose the exchanger thermistor.
  • Page 25 Si04-756 Removal of Electrical Box Step Procedure Points Close the electrical box cover and slide the electrical box to unfasten the hook in the key hole. (R5693) Push up the bottom side of the electrical box or push the bottom frame to the back.

  • Page 26: Removal Of Pcbs

    Removal of PCBs Si04-756 7. Removal of PCBs Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the shield plate Preparation Remove the electrical box External appearance of according to "Removal of the electrical box...
  • Page 27 Si04-756 Removal of PCBs Step Procedure Points 2. Remove the terminal board. Remove the screw and pull out the terminal board. Terminal board (R14161) Disconnect the Black..(1) power supply terminals with pliers. White ..(2) power supply Red ..(3) signal Green..
  • Page 28 Removal of PCBs Si04-756 Step Procedure Points Disconnect the [S46]: display PCB connectors [S46] [S48]. [S48]: humidity sensor PCB [S48] [S46] (R5705) Pull out the relay connector for the reduction motor while pinching the connector from the back side of the electrical box cover.
  • Page 29 Si04-756 Removal of PCBs Step Procedure Points Names of parts of the control PCB [S1] [S41] [S51] [S52] [S43] [S21] [S48] [S32] [S46] Fuse Varistor 3.15A, 250V (R14165) [S1]: fan motor [S43]: dehumidifying solenoid valve coils [S21]: HA [S46]: display PCB [S32]: indoor heat [S48]: humidity sensor exchanger...
  • Page 30 Removal of PCBs Si04-756 Step Procedure Points Disconnect the [S56]: control PCB connector [S56]. [S56] (R13965) Unfasten the upper hook with a flat screwdriver. Unfasten the lower hook. Upper hook Lower hook (R5713) Remove the lamp ON/OFF cover assembly. button Multi-colored indicator lamp Transmitter...
  • Page 31 Si04-756 Removal of PCBs Step Procedure Points Unfasten the 3 hooks The display PCB and the and remove the display signal receiver / transmitter Hooks PCB and the signal PCB are united. receiver / transmitter PCB. (R5715) Display PCB Signal receiver / transmitter PCB (R13967) Removal Procedure...

  • Page 32: Removal Of Dehumidifying Solenoid Valve Coils

    Removal of Dehumidifying Solenoid Valve Coils Si04-756 8. Removal of Dehumidifying Solenoid Valve Coils Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Preparation Remove the front grille Dehumidifying solenoid valve coil according to "Removal of Front Grille".

  • Page 33: Removal Of Connecting Duct

    Si04-756 Removal of Connecting Duct 9. Removal of Connecting Duct Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Detach the humidifying Preparation hose from the duct unit. Remove the front grille according to "Removal of Front Grille".
  • Page 34 Removal of Connecting Duct Si04-756 Step Procedure Points Pull out the duct unit and remove it. Hook (R5724) When reassembling, make sure to insert the projection into the fixing hole. Fixing hole (R5725) Removal Procedure...

  • Page 35: Removal Of Drain Hose

    Si04-756 Removal of Drain Hose 10.Removal of Drain Hose Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the drain hose. Cover the drain hose with plastic bags or the like so as Remove the 2 screws the remaining drain will not...
  • Page 36 Removal of Drain Hose Si04-756 Step Procedure Points Insert the drain hose Make sure that the drain removed in the hose is inserted firmly. previous step and tighten the screw. (R5729) Insert the detached drain plug with a Caution hexagonal wrench Do not push the drain plug (4 mm).

  • Page 37: Removal Of Swing Motors

    Si04-756 Removal of Swing Motors 11.Removal of Swing Motors Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the swing motors Preparation for horizontal blades. Remove the electrical box according to "Removal of Cut the clamp.
  • Page 38 Removal of Swing Motors Si04-756 Step Procedure Points Unfasten the upper hook of the swing motor assembly with a flat screwdriver. Hook (R14167) (R5735) Unfasten the hook of the connecting shaft for vertical blades. (R5736) Remove the swing motor assembly. (R5737) Remove the 2 screws and remove the swing...

  • Page 39: Removal Of Indoor Heat Exchanger

    Si04-756 Removal of Indoor Heat Exchanger 12.Removal of Indoor Heat Exchanger Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Disconnect the refrigerant Preparation piping. Remove the drain hose according to "Removal of Put a wooden block...
  • Page 40 Removal of Indoor Heat Exchanger Si04-756 Step Procedure Points 2. Remove the indoor unit. Remove the indoor unit from the installation plate. (R5743) (R5744) 3. Remove the indoor heat exchanger. Unfasten the hook of the piping fixture at the back of the indoor unit and pull out the pipe.
  • Page 41 Si04-756 Removal of Indoor Heat Exchanger Step Procedure Points Remove the 2 screws on the left. (R5747) Lift the left side of the indoor heat exchanger, Caution and pull out. When removing or reinstalling the indoor heat exchanger, be sure to wear protective gloves or wrap the indoor heat exchanger with Guide...

  • Page 42: Removal Of Fan Rotor / Fan Motor

    Removal of Fan Rotor / Fan Motor Si04-756 13.Removal of Fan Rotor / Fan Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the right side Preparation panel.
  • Page 43 Si04-756 Removal of Fan Rotor / Fan Motor Step Procedure Points Remove the fan motor The fan motor fixture (lower) and fan rotor. can be removed by removing the screw and pushing the hook. Fan rotor (R5756) Hook 3. Remove the fan motor. Loosen the fixing screw.
  • Page 44 Removal of Fan Rotor / Fan Motor Si04-756 Step Procedure Points The bearing is made of rubber. Push it inward firmly and remove it. Bearing (R5760) 5. How to install the fan motor When reassembling, align the mark on the shaft.

  • Page 45: Removal Of Horizontal Blades / Vertical Blades

    Si04-756 Removal of Horizontal Blades / Vertical Blades 14.Removal of Horizontal Blades / Vertical Blades Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the horizontal blades.
  • Page 46 Removal of Horizontal Blades / Vertical Blades Si04-756 Step Procedure Points 2. Remove the interlocking shaft. Interlocking shaft Unfasten the hook of the interlocking shaft. Hook (R13974) Remove the interlocking shaft. (R5768) 3. Remove the vertical blades. Unfasten the 3 hooks of the vertical blades with a flat screwdriver.

  • Page 47: Removal Of Streamer Unit

    Si04-756 Removal of Streamer Unit 15.Removal of Streamer Unit Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the streamer unit. Dehumidifying Deodorizing filter Streamer unit solenoid valve coil for streamer...
  • Page 48 Removal of Streamer Unit Si04-756 Step Procedure Points Cut the clamp and remove the screw of the drip proof cover. (R5775) 2. Remove the cover of the streamer unit. Remove the 2 screws of the cover. (R5776) Turn the streamer unit back and unfasten the 7 hooks.
  • Page 49 Si04-756 Removal of Streamer Unit Step Procedure Points 3. Remove the deodorizing filter for streamer and the electrode unit. Remove the deodorizing filter for streamer and the electrode unit. Electrode unit Deodorizing filter for streamer (R13977) Slide the cover of the When reassembling, slide electrode unit to the left the cover to the right.
  • Page 50 Removal of Streamer Unit Si04-756 Step Procedure Points 4. Remove the streamer unit PCB. Limit switch Streamer unit PCB Remove the screw of the electrode plate with a precise screwdriver. Screw Electrode plate (R13978) Unfasten the 2 hooks and remove the streamer unit PCB.
  • Page 51 Revision History Month / Year Version Revised contents 07 / 2013 Si04-756 First edition...
  • Page 52 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 unauthorised parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage, electrical shock, fire or explosion.

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