Daikin RXR28EV1B8 Service Manual
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Daikin RXR28EV1B8 Service Manual

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Si001275
REMOVAL
PROCEDURE
S E R V I C E
M A N U A L
2.8/4.2/5.0 kW Class
Outdoor Unit
Inverter
Pair Type

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Summary of Contents for Daikin RXR28EV1B8

  • Page 1 Si001275 REMOVAL PROCEDURE S E R V I C E M A N U A L 2.8/4.2/5.0 kW Class Outdoor Unit Inverter Pair Type...
  • Page 2 Service Manual Removal Procedure Outdoor Unit Heat Pump RXR28EV1B8 RXR42EV1B8 RXR50EV1B8...

  • Page 3: Table Of Contents

    Si001275 Table of Contents 1. Humidifier Unit..................2 2. Heater Assembly / Humidifying Rotor / Humidifying Rotor Motor ...3 3. Humidifying Fan Assembly / Damper Assembly ........5 4. Hygroscopic Fan Motor ................7 5. Outdoor Fan / Fan Motor.................8 6. Humidifying Duct ...................12 7.

  • Page 4: Humidifier Unit

    Humidifier Unit Si001275 1. Humidifier Unit Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the 4 screws Top panel and remove the top panel. (R13982) Disconnect the 5 relay connectors.

  • Page 5: Heater Assembly / Humidifying Rotor / Humidifying Rotor Motor

    Si001275 Heater Assembly / Humidifying Rotor / Humidifying Rotor Motor 2. Heater Assembly / Humidifying Rotor / Humidifying Rotor Motor Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1.
  • Page 6 Heater Assembly / Humidifying Rotor / Humidifying Rotor Motor Si001275 Step Procedure Points Remove the bell mouth on adsorption side. Bell mouth (R13988) Remove the A heat catalyst (black) is humidifying rotor. applied on the upper side. Humidifying rotor (Moisture adsorption element) (R13989) 3.

  • Page 7: Humidifying Fan Assembly / Damper Assembly

    Si001275 Humidifying Fan Assembly / Damper Assembly 3. Humidifying Fan Assembly / Damper Assembly 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 humidifying Humidifying thermistor fan assembly.
  • Page 8 Humidifying Fan Assembly / Damper Assembly Si001275 Step Procedure Points 2. Remove the damper Damper assembly assembly. Remove the 3 screws. Remove the damper assembly. (R18770) Remove the screw and remove the damper motor. Damper motor (R13992) Disconnect the limit switch.

  • Page 9: Hygroscopic Fan Motor

    Si001275 Hygroscopic Fan Motor 4. Hygroscopic Fan Motor Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the nut and Nut size: M6 remove the hygroscopic fan. Hygroscopic 10 mm (R17216)

  • Page 10: Outdoor Fan / Fan Motor

    Outdoor Fan / Fan Motor Si001275 5. Outdoor Fan / Fan Motor 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. Be careful not to forget to install, not to lose, and not Remove the screw.
  • Page 11 Si001275 Outdoor Fan / Fan Motor Step Procedure Points Remove the insulation Insulation sheet sheet. (R13997) 3. Remove the front panel. Remove the 7 screws. Unfasten the 5 hooks and remove the front Hook panel. Hook Hook Front panel (R13998) Remove the 4 screws and remove the front Front grille...
  • Page 12 Outdoor Fan / Fan Motor Si001275 Step Procedure Points 5. Remove the fan motor. Disconnect the [S70] connector for the fan motor [S70]. (R5836) Release the fan motor lead wire from the Fan motor lead wire hooks. (R13999) Remove the screw of the fan motor fixing plate.
  • Page 13 Si001275 Outdoor Fan / Fan Motor Step Procedure Points Detach the upper part of the fan motor fixing plate. (R5839) Fan motor fixing plate has 2 hooks on lower part. (R5840) Unfasten the hook and When reassembling, put the release the fan motor fan motor lead wire through lead wire.

  • Page 14: Humidifying Duct

    Humidifying Duct Si001275 6. Humidifying Duct Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the screw and remove the stop valve cover. Stop valve cover (R18771) Remove the screw and When reassembling, make...

  • Page 15: Electrical Box

    Si001275 Electrical Box 7. Electrical Box Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Release the harnesses for the humidifier unit from the hook. (R14005) Disconnect the [S20]: electronic expansion connectors valve coil...
  • Page 16 Electrical Box Si001275 Step Procedure Points Remove the screw of Thermal fuse should be the terminal board. replaced with the terminal board. Remove the screws and disconnect the You can work without connecting wires and removing the terminal the power supply board.

  • Page 17: Pcb

    Si001275 8. PCB Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the 7 screws. (R14015) Detach the radiation In working, be careful not to fin. break the PCB with the excessive force because the PCB and the radiation...
  • Page 18 Si001275 Step Procedure Points Remove the 2 screws. Unfasten the 3 hooks of the electrical box. Hook (R18481) Remove the PCB from the electrical box. Disconnect the connectors. (R5867) Removal Procedure...

  • Page 19: Sound Blankets

    Si001275 Sound Blankets 9. Sound Blankets 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 panel. Remove the 3 screws on the back side of the right side panel.
  • Page 20 Sound Blankets Si001275 Step Procedure Points Open the sound blanket (inner) and pull it out. Sound blanket (inner) (R18483) Pull the sound blanket (bottom) out. Sound blanket (bottom) (R14022) Removal Procedure...

  • Page 21: Thermistor Assembly

    Si001275 Thermistor Assembly 10.Thermistor Assembly Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Release the outdoor Outdoor temperature thermistor temperature thermistor from the guard net. Remove the 3 screws Quard on the back side of the right side panel.
  • Page 22 Thermistor Assembly Si001275 Step Procedure Points Remove the sound Since the piping ports on blanket (top). the sound blanket are torn Sound blanket (top) easily, remove the blanket carefully. (R14055) Release the discharge Detach the discharge pipe pipe thermistor. thermistor while opening the thermistor fixing clip.

  • Page 23: Reactor / Partition Plate

    Si001275 Reactor / Partition Plate 11.Reactor / Partition Plate Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the reactor. Remove the screw and remove the reactor. Reactor (R18484) 2.

  • Page 24: Four Way Valve

    Four Way Valve Si001275 12.Four Way Valve Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine.
  • Page 25 Si001275 Four Way Valve Step Procedure Points Pull out the electronic Electronic expansion expansion valve coil. valve coil (R14026) Remove the putty. Putty (R5887) Heat up the 4 brazed parts of the four way valve. Disconnect them in the order of (a) (b) (c) (d).

  • Page 26: Electronic Expansion Valve

    Electronic Expansion Valve Si001275 13.Electronic Expansion Valve Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine.
  • Page 27 Si001275 Electronic Expansion Valve Step Procedure Points Remove the putty. (R5893) Heat up the 2 brazed parts and disconnect them in the order of (a) (b). (R14030) Removal Procedure...

  • Page 28: Compressor

    Compressor Si001275 14.Compressor Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine. If the refrigerant gas leaks during work, ventilate the room.
  • Page 29 Si001275 Compressor Step Procedure Points Disconnect the Be careful so as not to burn Overload protector Compressor compressor lead wires the compressor terminals or lead wire and detach the the name plate. overload protector. V (yellow) U (red) W (blue) (R6031) (R18774) Remove the protecting...
  • Page 30 Compressor Si001275 Step Procedure Points Heat up the brazed part of the suction side and disconnect. (R5900) Lift the compressor and remove it. (R5901) Removal Procedure...
  • Page 31 Revision History Month / Year Version Revised contents 02 / 2013 Si001275 First edition...
  • Page 32 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.

This manual is also suitable for:

Rxr42ev1b8Rxr50ev1b8

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