Dakin RXM85PVMA Service Manual Download Page 12 | Manualshive

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PCBs

Si001423E

10

Removal Procedure

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 main PCB.

1

Unfasten the 4 hooks
and remove the
electrical box cover.

2

Disconnect the
connectors [S2], [S52],
[S102].

[S2]: demand control PCB
[S52] [S102]: main PCB

3

Unfasten the 2 hooks
and remove the service
monitor PCB.

Hook

Electrical
box cover

Hook

(R21771)

[S102]

[S2]

[S52]

(R21772)

Hook

Hook

Service monitor PCB

(R21773)

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Summary of Contents for RXM85PVMA

Page 1: ...REMOVAL PROCEDURE S E R V I C E M A N U A L Outdoor Unit Inverter Pair Type 8 5 9 5 kW Class Si001423E ...

Page 2: ...Service Manual Removal Procedure Outdoor Unit zHeat Pump RXM85PVMA RXM95PVMA ...

Page 3: ...ocedure 1 Table of Contents 1 Outer Panels 2 2 Fan Motor 7 3 Electrical Box 8 4 PCBs 10 5 Coils Thermistor ASSY 14 6 Sound Blankets 17 7 Compressor 18 Note The illustrations may be slightly different depending on the model ...

Page 4: ...move the suction grille 1 2 Pull out the bottom of the suction grille Unfasten the 3 hooks on the top of the suction grille and remove it Suction grille has other 6 hooks When reassembling insert the 6 hooks into the clearances of the outdoor heat exchanger fins 2 Remove the outer panels 1 Remove the 9 screws and remove the top panel Hook Suction grille R21742 Hook Hook R21743 Top panel R21744 ...

Page 5: ...nfasten the 2 hooks on the back 4 Remove the right side panel 5 Remove the screw 6 Slide the front panel 2 downward 7 Remove the front panel 2 The front panel has 3 hooks on the back When reassembling be sure to fit all 3 hooks Step Procedure Points Right side panel R21745 R21746 R21747 Front panel 2 R21748 ...

Page 6: ... hooks on the back When reassembling make sure to fit the 4 hooks 10 Remove the nut and remove the outdoor fan Nut size M8 The 85 class model does not have the marked screw 11 Remove the 8 screws of the front panel 1 Step Procedure Points Discharge grille R21749 R21750 R21751 Nut Outdoor fan 13 mm 0 51 inch R18965 Front panel 1 R21752 R21753 Rear view ...

Page 7: ...hook on the right 15 Lift up the partition plate 2 and remove it 16 Remove the 3 screws and remove the wire fixture 17 Remove the screws of the terminal boards and detach the demand communication wire connecting wire and the power supply wire Step Procedure Points R21754 R21755 Partition plate 2 R21756 Hook R21757 Wire fixture Demand communication wire Connecting wire Power supply wire R21758 ...

Page 8: ...e 2 hooks The 85 class model has 2 more screws on the back 20 Remove the rear panel 21 Push the hooks of the outdoor temperature thermistor holder from the inner side of the rear panel Detach the outdoor temperature thermistor holder Step Procedure Points Rear panel R21759 R21760 Hook R21761 Outdoor temperature thermistor holder ...

Page 9: ...e fan motor lead wire from the groove and the 4 hooks 3 Cut the 2 clamps 4 Remove the 2 lower screws Be sure to remove the lower screws 1 first If the top screws 2 are removed first the fan motor may tilt down or fall and cause injury because its center of gravity is shifted to the front 5 Remove the 2 upper screws 6 Remove the fan motor When reassembling make sure that the wire harness is at the ...

Page 10: ...and disconnect the connector S80 S80 four way valve coil S90 thermistors When reassembling insert each clamp into the small holes 4 Pull out the clamp and disconnect the connector S90 5 Release the thermistor harness from the hook on the bottom of the electrical box 6 Pull out the clamp and release the harness of the thermistors R21764 Earth ground wire S20 Clamp R21765 Clamp S90 S80 R21766 R21816...

Page 11: ...8 Disconnect the relay connector for overload protector 9 Remove the 2 screws 10 Slide the electrical box to the left to unfasten the hook 11 Lift up and remove the electrical box Step Procedure Points Clamp Relay connector for compressor Relay connector for overload protector R21768 R21769 Electrical box Hook R21770 ...

Page 12: ...ling work Step Procedure Points 1 Remove the main PCB 1 Unfasten the 4 hooks and remove the electrical box cover 2 Disconnect the connectors S2 S52 S102 S2 demand control PCB S52 S102 main PCB 3 Unfasten the 2 hooks and remove the service monitor PCB Hook Electrical box cover Hook R21771 S102 S2 S52 R21772 Hook Hook Service monitor PCB R21773 ...

Page 13: ...e terminal board cover When reassembling make sure to fit the 2 projections to the holes at the bottom of the terminal board cover 8 Disconnect all the connectors When reassembling connect the connectors as below Step Procedure Points Terminal board cover Earth ground wire Terminal board for smart meter R21774 Projection Hook R21775 R21776 2 white 1 black L2 brown N2 blue LA black L1 black LA whit...

Page 14: ...rite core 10 Remove the 3 screws and unfasten the 4 hooks 11 Lift up and remove the main PCB 2 Remove the reactor 1 Remove the 3 screws of the reactor and 1 screw of the ferrite core fixing band 2 Lift up and remove the reactor Step Procedure Points HR1 HR2 Ferrite core R21778 Hook Hook Main PCB R21779 R21780 Reactor Ferrite core R21781 ...

Page 15: ...p and remove the demand control unit 3 Unfasten the 2 hooks and open the cover 4 Disconnect the connector S206 S206 terminal board for smart meter 5 Remove the screw and remove the demand control PCB Step Procedure Points R21782 Demand control unit R21783 Cover S206 R21784 Demand control PCB R21785 ...

Page 16: ...n valve coil 1 Pull out the clamp from the hook and release the harness for electronic expansion valve coil 2 Pull out the electronic expansion valve coil 2 Remove the thermistor ASSY The 85 class model does not have a clamp at the top 1 Cut the 2 clamps 2 Pull out the outdoor heat exchanger thermistor Clamp Electronic expansion valve coil R21786 R21787 R21788 Outdoor heat exchanger thermistor Out...

Page 17: ...tor through the heat exchanger tube U bend and the hole as below 4 Release the outdoor temperature thermistor 5 Pull out the clamp and release the harness of the discharge pipe thermistor Step Procedure Points Outdoor temperature thermistor holder R21789 U bend Hole R21820 Outdoor temperature thermistor R9637 Clamp R21790 Discharge pipe thermistor harness ...

Page 18: ...d blanket top 7 Detach the discharge pipe thermistor 8 Pull out the thermistor ASSY 3 Remove the four way valve coil 1 Remove the screw and remove the four way valve coil Step Procedure Points Sound blanket top Sound blanket outer R21791 R9635 Discharge pipe thermistor R21792 R18076 Four way valve coil ...

Page 19: ...utes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the sound blanket top 2 Pull out and remove the sound blanket outer 3 Pull out and remove the sound blanket inner Sound blanket top R21793 Sound blanket outer R21794 Sound blanket inner R21795 ...

Page 20: ... refrigerant gas Restore the piping by non oxidation brazing Note Before working make sure that the refrigerant gas is empty in the circuit Be sure to apply nitrogen replacement when heating up the brazed part Do not use a metal saw for cutting pipes by all means because the sawdust comes into the circuit When withdrawing the pipes be careful not to pinch them firmly with pliers The pipes may get ...

Page 21: ...5 Heat up the blazed part of the discharge side pipe and disconnect it 6 Heat up the brazed part of the suction side pipe and disconnect it 7 Remove the 3 nuts 8 Lift up and remove the compressor Step Procedure Points Overload protector V yellow U red W blue R21797 Protection bushing R21798 Clamp Compressor lead wire Blazed part of the discharge side pipe Blazed part of the suction side pipe R2179...

Page 22: ...Revision History Month Year Version Revised contents 03 2015 Si001423E First edition ...

Page 23: ... 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 z Read the user s manual carefully before using this product The user s manual provides important safety instructions ...

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