Daikin RKM20PVMA Service Manual
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Daikin RKM20PVMA Service Manual

Removal procedure
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Si001420E
REMOVAL
PROCEDURE
S E R V I C E
M A N U A L
2.0/2.5/3.5 kW Class
Outdoor Unit
Inverter
Pair Type

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Summary of Contents for Daikin RKM20PVMA

  • Page 1 Si001420E REMOVAL PROCEDURE S E R V I C E M A N U A L 2.0/2.5/3.5 kW Class Outdoor Unit Inverter Pair Type...
  • Page 2 Service Manual Removal Procedure Outdoor Unit Cooling Only Heat Pump RKM20PVMA RXJ25PVMA RKM25PVMA RXJ35PVMA RKM35PVMA RXM20PVMA RXM25PVMA RXM35PVMA...

  • Page 3: Table Of Contents

    Si001420E Table of Contents 1. Outer Panels ...................2 2. Outdoor Fan / Fan Motor.................4 3. Electrical Box ..................6 4. PCBs .......................9 5. Thermistor ASSY ..................15 6. Reactor / Partition Plate ................16 7. Sound Blankets ..................17 8. Four Way Valve..................18 9. Compressor...................20 Note: The illustrations may be slightly different depending on the model.

  • Page 4: Outer Panels

    Outer Panels Si001420E 1. Outer Panels Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Remove the 3 screws Top panel and remove the top panel. (R21214) Remove the drip proof Drip proof cover cover.
  • Page 5 Si001420E Outer Panels Step Procedure Points Unfasten the 4 hooks and remove the discharge grille. Discharge grille (R21217) Remove the 8 screws of the front panel. (R21218) Unfasten the 4 hooks When reassembling, make and remove the front sure to fit the 4 hooks. panel.

  • Page 6: Outdoor Fan / Fan Motor

    Outdoor Fan / Fan Motor Si001420E 2. 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 Disconnect the [S70]: fan motor connector [S70]. [S70] (R21220) Release the outdoor...
  • Page 7 Si001420E Outdoor Fan / Fan Motor Step Procedure Points Remove the nut of the Nut size: M6 outdoor fan. Remove the outdoor fan. 10 mm (0.39 inch) (R18954) When reassembling, align mark of the outdoor fan with the D-cut section of the motor shaft.

  • Page 8: Electrical Box

    Electrical Box Si001420E 3. Electrical Box 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 When reassembling, make panel. sure to fit the 5 hooks. Remove the screw.
  • Page 9 Si001420E Electrical Box Step Procedure Points 2. Remove the electrical The cooling only models box. have no harness for four way valve coil. Disconnect the relay connector for four way valve coil. (R21233) Disconnect the relay The cooling only models connector for electronic have no relay connector for expansion valve coil.
  • Page 10 Electrical Box Si001420E Step Procedure Points Disconnect the [S90]: thermistors connector [S90]. [S90] (R21237) Disconnect the [S40]: overload protector connector [S40]. [S40] (R21238) Lift up the electrical box When reassembling, Electrical box and remove it. connect the connectors in the reverse order. (R21239) Removal Procedure...

  • Page 11: Pcbs

    Si001420E PCBs 4. PCBs 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 demand The demand controller is an control PCB. optional accessory for cooling only models.
  • Page 12 PCBs Si001420E Step Procedure Points 2. Remove the main PCB. Clamp Cut the 3 clamps. Clamp (R21243) Release the wires from the 3 hooks. Hook Hook (R21244) Disconnect the [S100]: forced operation button [HN3] [HL3] connectors [S100], [S100] [S10], [HL3], [HN3]. [S10][HL3][HN3]: filter PCB [S10] (R21245)
  • Page 13 Si001420E PCBs Step Procedure Points Release the wires from the hook. Hook (R21246) Remove the 6 screws. Hook Unfasten the 4 hooks and remove the main PCB. Hook (R21247) Main PCB (R21248) Removal Procedure...
  • Page 14 PCBs Si001420E Step Procedure Points 3. Remove the filter PCB. Remove the 2 screws Earth / and detach the earth / ground ground wires. screw (R21249) Remove the screw and remove the terminal board. (R21250) Release the wires from Inside view the 2 hooks.
  • Page 15 Si001420E PCBs Step Procedure Points Release the wires from When reassembling, make the hook. sure to insert the earth / ground wire first. Earth / ground wire (R21262) Hook (R21252) Remove the screw. Unfasten the 2 hooks and remove the filter PCB.
  • Page 16 PCBs Si001420E Step Procedure Points 4. Remove the forced operation button PCB. Unfasten the hook on the back and remove the forced operation button PCB. Forced operation button PCB Hook (R21255) (R21257) Removal Procedure...

  • Page 17: Thermistor Assy

    Si001420E Thermistor ASSY 5. Thermistor ASSY Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Slightly open the sound Be careful not to lose the blanket (top). fixture for the thermistor.

  • Page 18: Reactor / Partition Plate

    Reactor / Partition Plate Si001420E 6. 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 Remove the screw. Slide the reactor to the Reactor left and remove it.

  • Page 19: Sound Blankets

    Si001420E Sound Blankets 7. Sound Blankets Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the sound Since the piping ports are Sound blanket (top) blanket (top). torn easily, remove the sound blankets carefully.

  • Page 20: Four Way Valve

    Four Way Valve Si001420E 8. 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 21 Si001420E Four Way Valve Step Procedure Points Remove the screw and The cooling only models remove the four way have no four way valve coil. valve coil. Four way valve coil (R21271) Remove the terminal Terminal cover cover. (R21272) Remove the protection Protection bushing bushing.

  • Page 22: Compressor

    Compressor Si001420E 9. 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.
  • Page 23 Si001420E Compressor Step Procedure Points Remove the protection Protection bushing bushing. U (red) Disconnect the compressor lead wires and the overload protector. W (blue) Overload protector V (yellow) (R21273) Remove the sheets of Brazed part of discharge side putty, to avoid burning them.
  • Page 24 Revision History Month / Year Version Revised contents 03 / 2015 Si001420E First edition...
  • Page 25 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:

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