Daikin 4MXL36TVJU Service Manual Removal Procedure
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Daikin 4MXL36TVJU Service Manual Removal Procedure

Outdoor unit 36000/48000 btu/h class
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Table of Contents

Si121858E
REMOVAL
PROCEDURE
S E R V I C E
M A N U A L
36000/48000 Btu/h Class
Outdoor Unit
Inverter
Multi Type

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Table of Contents
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Summary of Contents for Daikin 4MXL36TVJU

  • Page 1 Si121858E REMOVAL PROCEDURE S E R V I C E M A N U A L 36000/48000 Btu/h Class Outdoor Unit Inverter Multi Type...
  • Page 2 Service Manual Removal Procedure Outdoor Unit Heat Pump 4MXL36TVJU 5MXS48TVJU...

  • Page 3: Table Of Contents

    Si121858E Table of Contents 1. Outer Panels ...................2 2. Outdoor Fan / Fan Motor.................5 3. PCB......................8 4. Thermistor ASSY / Electronic Expansion Valve Coil for Bypass Circuit / Four Way Valve Coil ...........12 5. Electrical Box / Partition Plate / Sound Blankets........16 6.

  • Page 4: Outer Panels

    Outer Panels Si121858E 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 10 screws Top panel and remove the top panel. (R25751) Remove the 6 screws ...
  • Page 5 Si121858E Outer Panels Step Procedure Points Remove the 8 screws of the front panel (1). Front panel (1) (R25755) Slide the fan motor Fan motor fixing frame fixing frame to the left and unfasten the 2 hooks. Hook (R25756) Unfasten the hook and remove the front panel (1).
  • Page 6 Outer Panels Si121858E Step Procedure Points Remove the 4 screws of the discharge grille. Discharge grille (R25758) Unfasten the 4 hooks  When reassembling, make Hook and remove the sure that the 4 hooks are discharge grille. securely fastened. Hook (R25759) Removal Procedure...

  • Page 7: Outdoor Fan / Fan Motor

    Si121858E Outdoor Fan / Fan Motor 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 1. Remove the outdoor fan / ...
  • Page 8 Outdoor Fan / Fan Motor Si121858E Step Procedure Points Remove the nut and  Nut size: M8 remove the outdoor fan. D-cut 13 mm (1/2 inch) (R18965) Washer  When reassembling, align Mark the mark of the outdoor fan Outdoor fan with the D-cut section of the (R25765) motor shaft.
  • Page 9 Si121858E Outdoor Fan / Fan Motor Step Procedure Points 2. Tips for removing the fan.  Fan and fan motor can be removed without removing Remove the top panel the front panel (1). and front panel (2) and the right side panel. Remove the shield plate.

  • Page 10: Pcb

    Si121858E 3. PCB 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 main PCB. Remove the 3 screws and open the refrigerant Refrigerant pipe fixing cover.
  • Page 11 Si121858E Step Procedure Points Disconnect the 5 [E1], [E2], [E3]: ground [HL1] [HN1] [E2] [E3] [E1] connectors. [S], [S10]: to terminal block Remove the 2 screws [HL1], [HN1]: power supply of terminal [HL1] and [HN1]. [S10] (R25772) Disconnect the [S70]: fan motor connectors [S70] and [S80]: four way valve coil [S80].
  • Page 12 Si121858E Step Procedure Points [E1], [E2], [E3]: ground [E1] [HL1] [HN1] [E2] [E3] [HL1], [HN1]: power supply [S], [S10]: to terminal block [S20](white): room A [S10] [S21](red): room B [S22](blue): room C [S23](yellow): room D [S202] [S24](white): room E (5-room [S201] model only) [S40]...
  • Page 13 Si121858E Step Procedure Points Unfasten the 4 hooks  When reassembling, make Service monitor PCB cover and remove the service sure that the 4 hooks are securely fastened. monitor PCB cover. Back view (R22312) (R25780) Disconnect the 2 [S501], [S502]: to main PCB Projection [S502] connectors [S501] and...

  • Page 14: Thermistor Assy / Electronic Expansion Valve Coil For Bypass Circuit / Four Way Valve Coil

    Thermistor ASSY / Electronic Expansion Valve Coil for Bypass Circuit / Four Way Valve Coil Si121858E 4. Thermistor ASSY / Electronic Expansion Valve Coil for Bypass Circuit / Four Way Valve Coil Warning  Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.
  • Page 15 Si121858E Thermistor ASSY / Electronic Expansion Valve Coil for Bypass Circuit / Four Way Valve Coil Step Procedure Points Slightly lift up the Hook conduit mounting plate and unhook the 2 hooks. Release the 2 hooks and remove the rear Conduit plate.
  • Page 16 Thermistor ASSY / Electronic Expansion Valve Coil for Bypass Circuit / Four Way Valve Coil Si121858E Step Procedure Points Slightly open the sound blanket (outer). Sound blanket (outer) (R25788) Detach the velcro tape and release the discharge pipe Velcro tape thermistor lead wire.
  • Page 17 Si121858E Thermistor ASSY / Electronic Expansion Valve Coil for Bypass Circuit / Four Way Valve Coil Step Procedure Points Cut the 3 clamps. Clamp A Clamp B (clamp A) Pull out the 2 clamps. (clamp B) Detach the wires from the hook and remove Hook the thermistor ASSY.

  • Page 18: Electrical Box / Partition Plate / Sound Blankets

    Electrical Box / Partition Plate / Sound Blankets Si121858E 5. Electrical Box / Partition Plate / 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.
  • Page 19 Si121858E Electrical Box / Partition Plate / Sound Blankets Step Procedure Points 3. Remove the sound Sound blanket (top) blankets. Remove the sound blanket (top). (R25802) Remove the sound blanket (outer).  To remove the overload protector, push the top of the Sound blanket (outer) retainer and release the 2 (R25803)

  • Page 20: Gas / Liquid Pipe Thermistor Assy

    Gas / Liquid Pipe Thermistor ASSY Si121858E 6. Gas / Liquid Pipe Thermistor ASSY 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 gas pipe ...

  • Page 21: Electronic Expansion Valve

    Si121858E Electronic Expansion Valve 7. 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 22 Electronic Expansion Valve Si121858E Step Procedure Points 2. Remove the electronic  Cover the peripheries with expansion valve. protection sheet not to burn. Brazed Remove the putties. part Heat up the 2 brazed parts and remove the electronic expansion valve. Putty Remove other electronic expansion...

  • Page 23: Four Way Valve / Electronic Expansion Valve For Bypass Circuit

    Si121858E Four Way Valve / Electronic Expansion Valve for Bypass Circuit 8. Four Way Valve / Electronic Expansion Valve for Bypass Circuit Warning  Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.
  • Page 24 Four Way Valve / Electronic Expansion Valve for Bypass Circuit Si121858E Step Procedure Points Remove the protection Protection bushing U (red) bushing. Disconnect the compressor lead wires. W (blue) V (yellow) (R25816) Remove the putty.  The fusible plug melts at 70°C (158°F).

  • Page 25: Compressor

    Si121858E Compressor 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 26 Compressor Si121858E Step Procedure Points Remove the putty.  Cover the peripheries with Putty protection sheet not to burn. Brazed part of the Brazed part of Heat up the brazed part discharge side pipe the suction of the discharge side side pipe Compressor pipe and disconnect it.
  • Page 27 Revision History Month / Year Version Revised contents 02 / 2019 Si121858E First edition...
  • Page 28 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.

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