Daikin ARX20GV1B Service Manual Download Page 10 | Manualshive

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Removal of Electrical Box / PCBs

Si00-874

8

Removal Procedure

2. Remove the electrical box.

[S80]: four way valve coil

1

Disconnect the
connector [S80].

2

Disconnect the
connector [S40].

[S40]: overload protector

3

Disconnect the
connector [S20].

[S20]: electronic expansion

valve coil

4

Disconnect the relay
connector for the
compressor.

Step

Procedure

Points

(R7388)

[S80]

[S40]

(R7389)

[S20]

(R7390)

(R7392)

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9
10
11
12
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Summary of Contents for ARX20GV1B

Page 1: ...REMOVAL PROCEDURE S E R V I C E M A N U A L Outdoor Unit Inverter Pair Type 2 0 2 5 3 0 3 5 kW Class Si00 874 ...

Page 2: ...vice Manual Removal Procedure Outdoor Unit zCooling Only zHeat Pump RK20GV1B ARX20GV1B RK25GV1B ARX25GV1B RK35GV1B ARX35GV1B RK20GVLT RX20GV1B RK25GVLT RX25GV1B RK30GVLT RX35GV1B RX20GVLT RX25GVLT RX30GVLT ...

Page 3: ...or 4 3 Removal of Electrical Box PCBs 6 4 Removal of Sound Blankets 14 5 Removal of Electronic Expansion Valve ASSY 16 6 Removal of Four Way Valve 17 7 Removal of Compressor 19 Note The illustrations may be slightly different depending on the model The illustrations are for heat pump models as representative ...

Page 4: ... work Step Procedure Points 1 Appearance features Take care not to cut your finger by the fins of the outdoor heat exchanger 2 Remove the panels The stop valve cover is united with the shield plate When reassembling make sure to fit the 3 hooks 1 Remove the screw of the stop valve cover Pull down the stop valve cover and remove it R10742 R14768 R16329 Stop valve cover R16330 Shield plate Hook ...

Page 5: ...el 4 Lift up the left side and unfasten the hooks 5 Unfasten the right side hooks and remove the front panel 6 The discharge grille has 2 projections to prevent its rotation Press the projection from the rear side and rotate the discharge grille to remove it Step Procedure Points Top panel Front panel R16331 R17304 R17306 R17307 Projection rear side Discharge grille ...

Page 6: ...outdoor fan Remove the outdoor fan When reassembling align the mark of the outdoor fan with the D cut section of the motor shaft 2 Remove the fan motor 1 Disconnect the connector for the fan motor S70 2 Release the fan motor lead wire from the hooks 3 Remove the screw and remove the fan motor fixing frame When reassembling put the fan motor lead wire through the back of the fan motor so as not to ...

Page 7: ...Si00 874 Removal of Outdoor Fan Fan Motor Removal Procedure 5 4 Release the fan motor lead wire from the hooks 5 Remove the 3 screws to remove the fan motor Step Procedure Points R14778 R14779 Fan motor ...

Page 8: ...ng work Step Procedure Points 1 Remove the right side panel Preparation Remove the panels according to the Removal of Outer Panels 1 Release the outdoor temperature thermistor 2 Lift up the guard net to remove 3 Remove the screws and release the connecting wire and the power supply wire 4 Remove the 3 screws and remove the wire clamp R7383 R7384 R17285 Connecting wire Power supply wire R14783 Wire...

Page 9: ...the right side panel 6 Remove the 4 screws on the right side panel 7 Unfasten the hook on the rear side When reassembling make sure to fit the hook 8 Unfasten the 2 hooks and remove the right side panel Step Procedure Points R17308 Right side panel R11762 Hook R11763 R18221 Right side panel Hook Hook ...

Page 10: ...x S80 four way valve coil 1 Disconnect the connector S80 2 Disconnect the connector S40 S40 overload protector 3 Disconnect the connector S20 S20 electronic expansion valve coil 4 Disconnect the relay connector for the compressor Step Procedure Points R7388 S80 S40 R7389 S20 R7390 R7392 ...

Page 11: ... of fixture 6 Pull out the outdoor heat exchanger thermistor Pay attention so as not to lose the clip for the thermistor 7 Cut the clamp 8 Unfasten the hook from the partition plate with a flat screwdriver The electrical box can be removed by lifting itself without a screwdriver Step Procedure Points Discharge pipe thermistor R18744 Dent Fixture R18746 R18745 Outdoor heat exchanger thermistor Clip...

Page 12: ...1 black upper 2 white lower 3 red upper green yellow lower 1 Remove the screw on the terminal board 2 Cut the clamp 3 Remove the 2 screws of the earth ground wires 4 Disconnect the 2 terminals of the reactor Step Procedure Points R11236 Electrical box R18222 Terminal board Clamp Main PCB R15867 R18751 Reactor Brown White ...

Page 13: ...ove the 3 screws to remove the reactor 6 Disconnect the connector S90 S90 thermistors 7 Remove the 6 screws 8 Disconnect the 3 connectors S10 HL3 HN3 S10 HL3 HN3 filter PCB Step Procedure Points Reactor R15862 S90 R15863 Main PCB R15864 S10 R17309 HN3 blue HL3 orange ...

Page 14: ... Box PCBs Si00 874 12 Removal Procedure 9 Unfasten the 2 hooks 10 Lift and remove the main PCB 4 Remove the filter PCB 1 Cut the clamp 2 Release the harnesses from the hooks Step Procedure Points R15869 R14813 R14814 R18752 ...

Page 15: ...874 Removal of Electrical Box PCBs Removal Procedure 13 3 Remove the screw 4 Unfasten the 2 hooks 5 Release the harnesses 6 Remove the filter PCB Step Procedure Points R14816 R14817 R14818 R14819 Filter PCB ...

Page 16: ...turning off all power supplies before disassembling work Step Procedure Points 1 Remove the partition plate Some models have 3 screws 1 Remove the 2 screws 2 The partition plate has a hook on the lower side Lift and pull the partition plate and remove it When reassembling fit the lower hook into the bottom frame R17286 R14821 Partition plate Hook ...

Page 17: ...carefully The design of the sound blankets varies depending on the model 1 Lift and remove the sound blanket top 2 Pull the sound blankets outer and inner 2 out Some models have no sound blanket inner 2 3 Pull the sound blanket inner 1 out Step Procedure Points Sound blanket top R17287 Sound blanket outer Sound blanket inner 2 R14823 Sound blanket inner 1 R14824 ...

Page 18: ... the electronic expansion valve because it contains plastic parts They may melt with heat and cause operation failure Replace the whole assembly Caution Do not directly heat the electronic expansion valve Wrap the electronic expansion valve with wet cloth and provide water so that the cloth does not dry Keep below 120 C Caution From the viewpoint of global environment protection do not discharge t...

Page 19: ...ocedure Points 1 Remove the peripheries 1 Remove the terminal cover 2 Remove the screw and remove the four way valve coil 3 Disconnect the terminals of the compressor 4 Remove the overload protector R15005 Terminal cover R12653 The cooling only models do not have a four way valve There are 2 hooks at the inner side of the terminal cover R11799 Four way valve coil R14529 U red V yellow W blue Overl...

Page 20: ... with wet cloth and provide water so that the cloth does not dry In case of difficulty with gas brazing machine 1 Disconnect the brazed part where is easy to disconnect and restore 2 Cut pipes on the main unit with a tube cutter in order to make it easy to disconnect Before working make sure that the refrigerant gas is empty in the circuit Be sure to apply nitrogen replacement when heating up the ...

Page 21: ...the sake of this wrap the four way valve with wet cloth and provide water so that the cloth does not dry In case of difficulty with gas brazing machine 1 Disconnect the brazed part where is easy to disconnect and restore 2 Cut pipes on the main unit with a tube cutter in order to make it easy to disconnect 1 Remove the four way valve the terminal cover and the lead wire for the compressor so as no...

Page 22: ...Revision History Month Year Version Revised contents 06 2013 Si00 874 First edition ...

Page 23: ...sories 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 instruc...

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