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Daikin 5MKS90E7V3B Service Manual
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Daikin 5MKS90E7V3B Service Manual

Removal procedure
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Si12-794
REMOVAL
PROCEDURE
S E R V I C E
M A N U A L
8.0/9.0/10.0 kW Class
Outdoor Unit
Inverter
Multi Type

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Summary of Contents for Daikin 5MKS90E7V3B

  • Page 1 Si12-794 REMOVAL PROCEDURE S E R V I C E M A N U A L 8.0/9.0/10.0 kW Class Outdoor Unit Inverter Multi Type...
  • Page 2 Service Manual Removal Procedure Outdoor Unit Cooling Only Heat Pump 5MKS90E7V3B 4MXS80E7V3B 5MXS90E7V3B 4MKS80ESG 3MXS90EVLT 3MKS90EVLT 4MXS100EVLT 4MKS100EVLT 4MXS80EVMA 4MKS90EVMA...

  • Page 3: Table Of Contents

    Si12-794 Table of Contents 1. Removal of Outer Panels ................2 2. Removal of Electrical Box ..............16 3. Removal of PCBs..................22 4. Removal of Fan Motor................26 5. Removal of Coils / Thermistors .............27 6. Removal of Sound Blankets..............32 7. Removal of Compressor ...............35 Note: The illustrations may be slightly different depending on the model.

  • Page 4: Removal Of Outer Panels

    Removal of Outer Panels Si12-794 1. Removal of Outer Panels Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Step Appearance features (R6368) 1. Remove the suction grille. The hooks are secured in Rear side the clearances of the...
  • Page 5 Si12-794 Removal of Outer Panels Step Procedure Points Slide the suction grille Hook downward to unfasten the 3 top hooks. (R14613) Remove the suction grille. (R6372) 2. Remove the top panel. Top panel Remove the 4 screws on the back and the screw on the left side panel.
  • Page 6 Removal of Outer Panels Si12-794 Step Procedure Points Remove the 2 screws on the front and the screw on the right side panel. Right side panel (R6374) Lift the top panel and remove it. (R6375) 3. Remove the right side panel.
  • Page 7 Si12-794 Removal of Outer Panels Step Procedure Points Slide the right side panel downward to unfasten the 2 hooks on the back side. (R6377) Hook (R14614) Hook (R14615) Removal Procedure...
  • Page 8 Removal of Outer Panels Si12-794 Step Procedure Points Remove the right side panel. (R10441) 4. Remove the front panel This screw is M5 × 16 (2). Front Panel (2) Remove the 2 screws. Front Panel (1) (R10629) Slide the front panel (2) downward to unfasten the hook.
  • Page 9 Si12-794 Removal of Outer Panels Step Procedure Points (R6383) Remove the front panel (2). (R10375) 5. Remove the front panel Remove the discharge grille (1). and outdoor fan first to Front remove the front panel (1). Remove the 4 screws Panel (1) on the discharge grille.
  • Page 10 Removal of Outer Panels Si12-794 Step Procedure Points Slide the discharge grille downward to unfasten the 2 hooks at the top. Hook (R17173) Remove the discharge grille. (R10380) Remove the nut and Nut size : M8 remove the outdoor fan. 13 mm Outdoor fan (R12301)
  • Page 11 Si12-794 Removal of Outer Panels Step Procedure Points Remove the 2 screws on the partition plate Partition plate (1) (1). (R10382) Remove the screw at the bottom left of the front panel (1). (R10383) Remove the screw at the bottom of the left side.
  • Page 12 Removal of Outer Panels Si12-794 Step Procedure Points Remove the screw at the bottom of the back side. (R6394) The front panel (1) has a hook. Lift the front panel (1). Hook (R17174) Remove the front panel (1). (R10385) Be sure to detach the front panel (1) carefully so as not to deform it.
  • Page 13 Si12-794 Removal of Outer Panels Step Procedure Points 6. Remove the rear panel. Remove the screw on the partition plate (2). Rear panel Partition plate (2) (R11209) Slide the partition plate (2) to the left and remove it. (R11211) Removal Procedure...
  • Page 14 Removal of Outer Panels Si12-794 Step Procedure Points Remove the 5 screws on the wire fixing plate (upper). Wire fixing plate (upper) (R11210) Remove the wire fixing plate (upper). (R11213) Remove the 3 screws on the wire fixing plate (lower). Wire fixing plate (lower) (R11214)
  • Page 15 Si12-794 Removal of Outer Panels Step Procedure Points Remove the wire fixing plate (lower). (R11215) Pull out the holder of The holder is secured in the the outdoor clearances of the outdoor temperature thermistor. heat exchanger fins. Outdoor temperature thermistor (R10388) Release the thermistor wire from the groove...
  • Page 16 Removal of Outer Panels Si12-794 Step Procedure Points Remove the 3 screws on the rear panel. (R10390) Remove the screw on the bottom frame. (R10391) Remove the screw on the stop valve mounting plate. Stop valve mounting plate (R10392) Removal Procedure...
  • Page 17 Si12-794 Removal of Outer Panels Step Procedure Points Lift the rear panel upward to unfasten the 2 hooks. Hook Hook (R12918) Remove the rear panel. (R10394) Removal Procedure...

  • Page 18: Removal Of Electrical Box

    Removal of Electrical Box Si12-794 2. Removal of Electrical Box Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Step Remove the 2 screws to detach the earth wires.
  • Page 19 Si12-794 Removal of Electrical Box Step Procedure Points Disconnect the The cooling only models do connector for the four not have the harness for [S80] way valve coil [S80]. [S80]. Pull out the clamp. Clamp (R11187) Disconnect the Pull out the clamp. connectors for the The 3-room models have no electronic expansion...
  • Page 20 Removal of Electrical Box Si12-794 Step Procedure Points Disconnect the Pull out the clamp. [S92] connector for the gas When reassembling, insert pipe thermistor [S92]. the clamp into the small hole. [S92] Clamp (R17267) (R10537) Disconnect the Pull out the clamp. connector for the thermistors [S90].
  • Page 21 Si12-794 Removal of Electrical Box Step Procedure Points Disconnect the connector for the [S40] overload protector [S40]. (R10539) The wire harness for the compressor is attached to the partition plate (1) by the clamp. Partition plate Clamp (R12904) Pull out the clamp with pliers.
  • Page 22 Removal of Electrical Box Si12-794 Step Procedure Points Disconnect the relay connector of the compressor. (R6469) Remove the screw on the stop valve mounting Electrical box plate. Stop valve mounting plate (R10395) Remove the screw on the partition plate (1). Partition plate (1) (R6411) Removal Procedure...
  • Page 23 Si12-794 Removal of Electrical Box Step Procedure Points Slide the electrical box leftward to unfasten the hook on the right side of the electrical box. Hook (R10401) Lift up the electrical box and remove it. (R10402) Removal Procedure...

  • Page 24: Removal Of Pcbs

    Removal of PCBs Si12-794 3. Removal of PCBs Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Step 1. Remove the main PCB. Hook Remove the cover of Release the 4 hooks.
  • Page 25 Si12-794 Removal of PCBs Step Procedure Points Disconnect the [S51] [S101] : service monitor V(yellow) W(blue) U(red) [S51] [S101] connectors. [S10] [S10] : terminal board [HR2](blue) (transmission) [AC2] [HR1](white) (blue) [HR1] [HR2] : reactor [AC1] [AC1] [AC2] : terminal board (brown) (power supply) [U] [V] [W] : compressor...
  • Page 26 Removal of PCBs Si12-794 Step Procedure Points 3. Remove the service monitor PCB. [S102] Disconnect the connectors [S52] [S102] from the service monitor PCB. [S52] Service monitor PCB (R10410) Slightly lift the top hook to detach. (R6436) Unfasten the bottom hook and remove the service monitor PCB.
  • Page 27 Si12-794 Removal of PCBs Step Procedure Points 4. Remove the terminal board. Remove the screw. Terminal board (R10411) Unfasten the hook. (R10412) Remove the terminal board. (R10413) Removal Procedure...

  • Page 28: Removal Of Fan Motor

    Removal of Fan Motor Si12-794 4. Removal of Fan Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Step (R10414) Remove the 2 lower Be sure to remove the lower screws of the fan motor.

  • Page 29: Removal Of Coils / Thermistors

    Si12-794 Removal of Coils / Thermistors 5. Removal of Coils / Thermistors Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Step 1. Remove the electronic expansion valve coils. Pull out the electronic expansion valve coils.
  • Page 30 Removal of Coils / Thermistors Si12-794 Step Procedure Points Peel off the putty and pull out the liquid pipe thermistors. Liquid pipe thermistor (R17413) Be careful not to lose the fixtures for the thermistors. Liquid pipe thermistor Fixture (R6450) Pull out the outdoor heat exchanger Outdoor heat exchanger thermistor.
  • Page 31 Si12-794 Removal of Coils / Thermistors Step Procedure Points Remove the clip from Be careful not to lose the the outdoor heat clip. exchanger thermistor. Clip (R6452) Slightly open the sound blanket (outer). Sound blanket (outer) (R10418) Remove the sound blanket (top upper).
  • Page 32 Removal of Coils / Thermistors Si12-794 Step Procedure Points Remove the discharge pipe thermistor. Discharge pipe thermistor (R10420) Remove the fixture. Fixture (R10430) 3. Remove the four way The cooling only models do valve coil. not have a four way valve coil.
  • Page 33 Si12-794 Removal of Coils / Thermistors Step Procedure Points Remove the four way valve coil. Four way valve coil (R10432) Removal Procedure...

  • Page 34: Removal Of Sound Blankets

    Removal of Sound Blankets Si12-794 6. Removal of Sound Blankets Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Step Open the sound blanket (outer). Sound blanket (outer) (R10433) Remove the sound...
  • Page 35 Si12-794 Removal of Sound Blankets Step Procedure Points Remove the sound The sound blanket is fragile. blanket (outer). Carefully pass the blanket through the discharge pipe. Sound blanket (outer) (R10436) Remove the sound blanket (top inner). Sound blanket (top inner) (R10437) Open the sound blanket (inner) and pass it...
  • Page 36 Removal of Sound Blankets Si12-794 Step Procedure Points Remove the sound blanket (inner). (R10439) Removal Procedure...

  • Page 37: Removal Of Compressor

    Si12-794 Removal of Compressor 7. Removal of Compressor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Step Remove the terminal cover. Terminal cover (R6466) Disconnect the U : red, V : yellow, W : blue U(red) compressor lead wires.
  • Page 38 Removal of Compressor Si12-794 Step Procedure Points Before working, make sure that the refrigerant Warning gas is empty in the circuit. Be careful not to get yourself Be sure to apply nitrogen burnt with the pipes and other replacement when parts that are heated by the heating up the brazed gas brazing machine.
  • Page 39 Revision History Month / Year Version Revised contents 07 / 2013 Si12-794 First edition...
  • Page 40 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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4mxs80e7v3b5mxs90e7v3b4mks80esg3mxs90evlt3mks90evlt4mxs100evlt ... Show all