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Daikin 4MXS115HV2C Service Manual
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Daikin 4MXS115HV2C Service Manual

Removal procedure
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Si12-996
REMOVAL
PROCEDURE
S E R V I C E
M A N U A L
11.5 kW Class
Outdoor Unit
Inverter
Multi Type

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Summary of Contents for Daikin 4MXS115HV2C

  • Page 1 Si12-996 REMOVAL PROCEDURE S E R V I C E M A N U A L 11.5 kW Class Outdoor Unit Inverter Multi Type...
  • Page 2 Service Manual Removal Procedure Outdoor Unit Heat Pump 4MXS115HV2C...

  • Page 3: Table Of Contents

    Si12-996 Table of Contents 1. Removal of Outer Panels ................2 2. Removal of Fan Motor................12 3. Removal of Electrical Box ..............14 4. Removal of PCBs..................18 5. Removal of Coils / Thermistors .............23 6. Removal of Sound Blanket..............27 7. Removal of Compressor ...............30 Removal Procedure...

  • Page 4: Removal Of Outer Panels

    Removal of Outer Panels Si12-996 1. Removal of Outer Panels Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points External appearance (R9585) 1. Removal of the suction The hooks are secured in grille the clearances of the heat...
  • Page 5 Si12-996 Removal of Outer Panels Step Procedure Points 3. Removal of the right side Right side panel panel Remove the 5 screws. (R9589) Slide the right side panel downward to release 2 hooks on the back side. (R11051) Hooks Hook Holes Hook Holes (R11052) Remove the right side...
  • Page 6 Removal of Outer Panels Si12-996 Step Procedure Points 4. Removal of the front M5×20 panel (2) Remove the 2 screws. Front panel (2) (R11054) Slide the front panel (2) downward to release the 3 hooks. (R11055) (R9594) Removal Procedure...
  • Page 7 Si12-996 Removal of Outer Panels Step Procedure Points Remove the front panel The insulation sheet is (2). inserted between the front panel (2) and the electrical box. Insulation sheet (R11056) 5. Removal of the front Remove the discharge grille panel (1) and outdoor fan first to remove the front panel (1).
  • Page 8 Removal of Outer Panels Si12-996 Step Procedure Points Remove the fixing nut Fan fixing nut : M8 and remove the outdoor fan. Outdoor fan (R11059) Remove the 2 screws on the partition plate Partition plate (1) (1). (R11060) Remove the 2 screws at the bottom left of the front.
  • Page 9 Si12-996 Removal of Outer Panels Step Procedure Points Remove the screw at the bottom of the left side. (R11062) Remove the screw at the bottom of the back side. (R11063) The front panel (1) is provided with a hook on its front.
  • Page 10 Removal of Outer Panels Si12-996 Step Procedure Points Remove the front panel (1). (R11065) 6. Removal of the rear panel Remove the 2 screws on the partition plate (2). Lift up slightly and remove the partition plate (2). Partition plate (2) (R11066) Remove the 2 screws on the wire fixing plate.
  • Page 11 Si12-996 Removal of Outer Panels Step Procedure Points Remove the wire fixing plate. (R11068) Remove the 4 screws on the rear panel. (R11069) Remove the screw from the bottom frame. (R11070) Removal Procedure...
  • Page 12 Removal of Outer Panels Si12-996 Step Procedure Points Remove the screw from the stop valve mounting Insulation material plate. Peel off a half of the insulation material. Stop valve mounting plate (R11071) Lift the rear panel upward to release the 2 hooks.
  • Page 13 Si12-996 Removal of Outer Panels Step Procedure Points The outdoor temperature thermistor holder is now released. Outdoor temperature thermistor holder (R11074) Remove the rear panel. Rear panel (R11075) Removal Procedure...

  • Page 14: Removal Of Fan Motor

    Removal of Fan Motor Si12-996 2. Removal of Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Disconnect the When reassembling, insert connector for fan motor the clamp into the small Ferrite core [S70] and release the...
  • Page 15 Si12-996 Removal of Fan Motor Step Procedure Points Remove the 2 screws Be sure to remove the at the bottom first. bottom screws first. If the top screws are removed first, the Next, remove the 2 top fan motor, the center of screws.

  • Page 16: Removal Of Electrical Box

    Removal of Electrical Box Si12-996 3. Removal of Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the screw from the stop valve mounting plate.
  • Page 17 Si12-996 Removal of Electrical Box Step Procedure Points Disconnect the When reassembling, insert connector for fan motor the clamp into the hole. Ferrite core [S70] and release the ferrite core attached to the electrical box with clamp. [S70] Fixing position for ferrite core of fan motor (R11083) (R11082)
  • Page 18 Removal of Electrical Box Si12-996 Step Procedure Points Disconnect the 2 When reassembling, insert connectors and detach the clamp into the hole. [S92] [S93] the 2 clamps. gas pipe thermistor connector [S92]: gas pipe thermistor connector [S93]: liquid pipe thermistor connector liquid pipe thermistor thermistor connector...
  • Page 19 Si12-996 Removal of Electrical Box Step Procedure Points 12 Pull out the clamp. Detach the clamp. Clamp (R9624) 13 Disconnect the relay connector of the overload protector [OL] and the compressor. (R11093) 14 Slide the electrical box leftward to release the Electrical box hook on the right side of the box.

  • Page 20: Removal Of Pcbs

    Removal of PCBs Si12-996 4. Removal of PCBs Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Step Remove the electrical box. 1. Removal of the PCB Insulation sheet Turn over the insulation sheet.
  • Page 21 Si12-996 Removal of PCBs Step Procedure Points Release the hooks and remove the service monitor PCB. (R11099) (R11100) Remove the 2 screws of the terminal board and the earth wire. Earth wire (R11101) Remove the 2 screws of the power supply terminal.
  • Page 22 Removal of PCBs Si12-996 Step Procedure Points Open the terminal board. Terminal board (R11104) Disconnect the 4 A3: Red connectors. B3: Yellow C3: Blue D3: Orange (R11105) Release the 2 wire harnesses from the terminal board. (R11106) Disconnect the relay connector for the reactor.
  • Page 23 Si12-996 Removal of PCBs Step Procedure Points Remove the 3 screws of the main PCB. Main PCB (R11108) Release the 4 hooks. Hooks (R11109) Disconnect the 3 connectors for the compressor harnesses. (R11110) Lift up and remove the main PCB. (R11111) Removal Procedure...
  • Page 24 Removal of PCBs Si12-996 Step Procedure Points Remove the 3 screws of the reactor and Reactor remove it. (R11112) Remove the 3 screws of the radiation fin and remove it. (R11113) Radiation fin (R11114) Removal Procedure...

  • Page 25: Removal Of Coils / Thermistors

    Si12-996 Removal of Coils / Thermistors 5. Removal of Coils / Thermistors Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removal of the electronic expansion valve coils Pull out the electronic expansion valve coils.
  • Page 26 Removal of Coils / Thermistors Si12-996 Step Procedure Points Pull out the gas pipe thermistors. Gas pipe thermistor (R11117) Be careful not to lose the clips. Gas pipe thermistor Clip (R11118) Pull out the outdoor heat exchanger thermistor. Outdoor heat exchanger thermistor (R18645) At the back side, open the outdoor...
  • Page 27 Si12-996 Removal of Coils / Thermistors Step Procedure Points Release the outdoor temperature thermistor. Outdoor temperature thermistor (R11271) Slightly open the sound blanket (outer). Sound blanket (outer) (R11122) Remove the sound blanket (top upper). Sound blanket (R11123) (top upper) Remove the discharge pipe thermistor.
  • Page 28 Removal of Coils / Thermistors Si12-996 Step Procedure Points 3. Removal of the four way valve coil Remove the screw. (R11124) Remove the four way valve coil. (R11125) Four way valve coil Removal Procedure...

  • Page 29: Removal Of Sound Blanket

    Si12-996 Removal of Sound Blanket 6. 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 Remove the screw from the partition plate (1). Partition plate (1) (R11126) Release the clamp.
  • Page 30 Removal of Sound Blanket Si12-996 Step Procedure Points Remove the partition plate (1). (R11129) Open the sound blanket (outer). Velcro tape Sound blanket (outer) (R11130) Remove the sound The sound blanket is fragile. blanket (outer). Sound blanket (outer) (R11131) Removal Procedure...
  • Page 31 Si12-996 Removal of Sound Blanket Step Procedure Points Remove the sound blanket (top inner). Sound blanket (top inner) (R11168) Open the sound blanket (inner). The sound blanket is fragile. Be careful of the notches of the compressor mount (3 locations). Sound blanket Compressor mount (inner)

  • Page 32: Removal Of Compressor

    Removal of Compressor Si12-996 7. 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 Remove the terminal cover. Terminal cover (R11171) Pull out the 3 lead wires U:red, V:yellow, W:blue with pliers.
  • Page 33 Si12-996 Removal of Compressor Step Procedure Points Heat up the brazed part and withdraw the piping Caution with pliers. Be careful not to burn yourself with the pipes and Before working, make other parts that are heated by sure that the refrigerant is the gas welding rod.
  • Page 34 Revision History Month / Year Version Revised contents 02 / 2013 Si12-996 First edition...
  • Page 35 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.