Daikin RKM71PVMA Service Manual Download | Manualshive

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Si001422E

PCB

Removal Procedure

13

4. Remove the demand

control PCB.

Some models have no
demand controller.

1

Remove the 2 screws.

2

Lift up and remove the
demand control unit.

3

Unfasten the 2 hooks
and open the cover.

4

Remove the screw.

5

Unfasten the hook and
remove the demand
control PCB.

Step

Procedure

Points

(R21704)

Demand control unit

(R21705)

Cover

(R21706)

Demand control PCB

Hook

(R21707)

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13
14
15
16
17
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Summary of Contents for RKM71PVMA

Page 1: ...REMOVAL PROCEDURE S E R V I C E M A N U A L 7 1 kW Class Outdoor Unit Inverter Pair Type Si001422E ...

Page 2: ...Service Manual Removal Procedure Outdoor Unit zCooling Only zHeat Pump RKM71PVMA RXM71PVMA ...

Page 3: ...uter Panels 2 2 Electrical Box 7 3 PCB 10 4 Fan Motor 14 5 Coils Thermistor ASSY 15 6 Sound Blankets 17 7 Compressor 19 Note The illustrations may be slightly different depending on the model The illustrations are for heat pump models as representative ...

Page 4: ... all power supplies before disassembling work Step Procedure Points 1 Unfasten the 2 hooks on the bottom of the suction grille 2 Slide downward the suction grille to unfasten the upper 3 hooks 3 Remove the suction grille 4 Remove the 8 screws and remove the top panel Hook Suction grille Hook R21473 R21474 Top panel R21475 ...

Page 5: ...e front panel 2 to unfasten the hook When reassembling make sure to fit the hook 7 Remove the 2 screws of the right side panel 8 Slide down the right side panel and remove it When reassembling make sure to fit the 2 hooks Step Procedure Points Front panel 2 R21476 Hook R21477 Right side panel R21478 R21479 ...

Page 6: ...ard the discharge grille to unfasten the upper 2 hooks When reassembling make sure to fit the 4 hooks 12 Remove the nut and remove the outdoor fan Nut size M8 When reassembling align the W mark of the outdoor fan with the D cut section of the motor shaft 13 Remove the 5 screws of the front panel 1 Step Procedure Points Discharge grille R21480 R21481 Nut Outdoor fan R21482 13 mm R20767 0 51 inch Fr...

Page 7: ...e it 18 Remove the 3 screws and remove the wire fixture 19 Remove the 11 screws on the terminal boards andreleasethedemand communication wire connecting wire power supply wire In case that the demand adaptor is attached optionally remove the demand adaptor first Step Procedure Points R21485 Partition plate 2 Hook R21486 R21487 Wire fixture Demand communication wire Connecting wire Power supply wir...

Page 8: ...rature thermistor holder 21 Release the thermistor harness from the slit 22 Remove the 5 screws and remove the rear panel When reassembling make sure to fit the 2 hooks Step Procedure Points Outdoor temperature thermistor holder R21490 Slit R21676 Rear panel R21677 R21678 ...

Page 9: ...ocedure Points 1 Remove the 2 screws and detach the earth ground wires 2 Disconnect the connector S70 S70 fan motor 3 Release the fan motor lead wire from the slit and the 5 hooks 4 Disconnect the connector S20 S20 electronic expansion valve coil 5 Pull out the clamp and release the harness Terminal board Earth ground wire R21679 S70 R21680 Hook Hook Slit R21681 S20 Clamp R21682 ...

Page 10: ...se the harness from the hook 10 Disconnect the connector S80 S80 four way valve coil Cooling only models have no harness for S80 11 Pull out the clamp and release the harness 12 Release the thermistor harness from the hook on the bottom of the electrical box When reassembling insert the clamp into the small hole 13 Pull out the clamp Step Procedure Points S90 Clamp R21683 Thermistor ASSY harness R...

Page 11: ...relay connector for the compressor and pull out the clamp 15 Remove the 2 screws 16 Lift up and remove the electrical box When reassembling make sure to fit the hook Step Procedure Points Clamp Relay connector for compressor R21687 R21688 Electrical box R21689 Hook ...

Page 12: ...CB S52 S102 main PCB Cooling only models have no connector for S2 Cooling only models have no terminal block for smart meter 3 Release the harness from the hook and groove In case of cooling models the service monitor PCB is fixed with clamps instead of the hooks Pinch the 4 clamps and remove the service monitor PCB 4 Unfasten the 2 hooks and remove the service monitor PCB Electrical box cover Fil...

Page 13: ...n the terminal board cover 5 Pull out all the terminals When reassembling connect the connectors as below Cooling only models have no connector LA HR1 reactor white HR2 reactor blue The harness for HR2 has a ferrite core 6 Pull out the terminals HR1 HR2 from the main PCB Step Procedure Points Terminal block for smart meter Earth ground wire R21695 Hook R21696 R21697 1 black L1 black 2 white N1 whi...

Page 14: ...ocedure 7 Remove the 3 screws and unfasten the 4 hooks 8 Lift up and remove the main PCB 3 Remove the reactor 1 Remove the 4 screws 2 Remove the reactor Step Procedure Points Hook Hook R21700 Main PCB R21701 R21702 Reactor R21703 ...

Page 15: ...d controller 1 Remove the 2 screws 2 Lift up and remove the demand control unit 3 Unfasten the 2 hooks and open the cover 4 Remove the screw 5 Unfasten the hook and remove the demand control PCB Step Procedure Points R21704 Demand control unit R21705 Cover R21706 Demand control PCB Hook R21707 ...

Page 16: ...ove the 2 lower screws of the fan motor 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 3 Then remove the 2 upper screws 4 Remove the fan motor When reassembling make sure that the wire harness is facing downward Clamp Clamp R21708 2 1 R6442 Fan motor R6443 Ha...

Page 17: ... turning off all power supplies before disassembling work Step Procedure Points 1 Remove the electronic expansion valve coil 1 Pull out the electronic expansion valve coil 2 Remove the four way valve coil 1 Remove the screw 2 Pull out the four way valve coil Electronic expansion valve coil R21709 R21710 Four way valve coil R21711 ...

Page 18: ...stor 3 Slightly open the sound blanket outer and the sound blanket top upper Be careful not to lose the fixture for the thermistor 4 Detach the discharge pipe thermistor and remove the thermistor ASSY Step Procedure Points Clamp Outdoor heat exchanger thermistor R21712 Clip R3264 Sound blanket top upper Discharge pipe thermistor Sound blanket outer R21713 Fixture R21715 Thermistor ASSY R21714 ...

Page 19: ...efore disassembling work Step Procedure Points 1 Remove the sound blanket top upper Since the piping ports on the sound blanket are torn easily remove the sound blanket carefully 2 Remove the sound blanket top lower 3 Open the sound blanket outer and remove it Sound blanket top upper R21716 Sound blanket top lower R21717 Sound blanket outer R21718 ...

Page 20: ...Sound Blankets Si001422E 18 Removal Procedure 4 Remove the sound blanket inner Step Procedure Points Sound blanket inner R21719 ...

Page 21: ... 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 22: ...t the lead wires of the compressor and overload protector 3 Remove the protection bushing 4 Pull out the clamp and remove the compressor lead wire Step Procedure Points Overload protector U red V yellow W blue R21721 Protection bushing R21722 R21723 Clamp ...

Page 23: ...he discharge side pipe and disconnect it 6 Heat up the brazed part of the suction side pipe and disconnect it 7 Remove the 2 nuts 8 Lift up and remove the compressor Step Procedure Points Brazed part of the discharge side pipe Brazed part of the suction side pipe R21724 Nut ...

Page 24: ...Revision History Month Year Version Revised contents 03 2015 Si001422E First edition ...

Page 25: ... 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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