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Daikin RKS18JV2S, Service Manual

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Daikin RKS18JV2S Service Manual Download Page 15

Si001274EC

PCBs

Removal Procedure

13

4. PCBs

Warning

Š

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.

[S12]: for [HL4] [HN4] on filter 

PCB

1

Disconnect the 
connector [S12] and 
pull out the clamp.

2

Disconnect the 
connector [S10].

[S10]: for [S11] on filter PCB

3

Pull out the clamp.

„

When reassembling, insert 
the clamp as below.

(R16959)

[S12]

Main PCB

(R16808)

[S10]

(R16775)

(R20195)

For compressor harness 
(red, blue, yellow)

Summary of Contents for RKS18JV2S

Page 1: ...REMOVAL PROCEDURE S E R V I C E M A N U A L 4 0 4 5 5 0 6 0 kW Class 18000 Btu h Class Outdoor Unit Inverter Pair Type Si001274EC...

Page 2: ...RKS40MVLT RKS50MVLT RXS45LAVMA RKS50J2V1B9 RXS50JAVLT RKS60F3V1B9 RXS60JAVLT RKS50GVM4 ARXS50G3V1B RKS60GVM4 RX50G2V1B9 RX60G2V1B9 RKS50GVMV RX50G3V1B RKS60GVMV RX60G3V1B RKS50HVM RXG50K3V1B RKS60HVM...

Page 3: ...r Fan Fan Motor 4 3 Electrical Box 6 4 PCBs 13 5 Sound Blankets Thermistors 19 6 Four Way Valve Electronic Expansion Valve 21 7 Compressor 24 Note The illustrations may be slightly different depending...

Page 4: ...rews and remove the top panel Remove the 4 screws and remove the discharge grille Take care not to cut your finger by the fins of the outdoor heat exchanger Slide the discharge grille upward and remov...

Page 5: ...front panel When reassembling fit the 3 left side hooks of the front panel first 6 Remove the screw of the stop valve cover 7 Pull down the stop valve cover to unfasten the hooks and remove it The sto...

Page 6: ...otor 3 4 Release the clamp from the partition plate Release the fan motor lead wire from the groove and the 2 hooks of the partition plate The ferrite core of the fan motor lead wire has a clamp 5 Rem...

Page 7: ...frame When reassembling fit the lower 2 hooks into the bottom frame 9 Open the hook and release the fan motor lead wire When reassembling put the fan motor lead wire through the back of the fan motor...

Page 8: ...tep Procedure Points 1 Remove the 2 screws and remove the protection plate 2 Remove the 3 screws and remove the wire fixture 3 Remove the 7 screws and remove the connecting wire and the power supply w...

Page 9: ...or 6 Remove the 4 screws of the right side panel 7 Unfasten the 3 hooks and remove the right side panel When reassembling insert the upper hook and the 2 lower hooks back into place Step Procedure Poi...

Page 10: ...e model Be careful not to lose the clip for the thermistor 10 Disconnect the connector S70 S70 fan motor 11 12 Release the clamp from the partition plate Release the fan motor lead wire from the groov...

Page 11: ...e connector S40 S40 overload protector 14 Pull out the clamp 15 16 Disconnect the connector S20 Pull out the clamp S20 electronic expansion valve coil 17 Pull out the clamp under the electrical box St...

Page 12: ...only models have no harness for S80 When reassembling insert the clamps of harnesses as below 20 Pull out the clamp When reassembling connect the connectors in the following order 1 S80 2 S20 3 S40 4...

Page 13: ...tion plate 24 Disconnect the connector S90 S90 thermistors When reassembling pass the thermistor harness under the harnesses HL2 blue HN2 white from the filter PCB When reassembling insert the clamp a...

Page 14: ...2 clamps at the bottom of the electrical box When reassembling insert the 2 clamps into the bottom of the electrical box 28 Pull out the clamp at the back 29 Remove the screw and remove the electrica...

Page 15: ...ling work Step Procedure Points 1 Remove the main PCB S12 for HL4 HN4 on filter PCB 1 Disconnect the connector S12 and pull out the clamp 2 Disconnect the connector S10 S10 for S11 on filter PCB 3 Pul...

Page 16: ...r PCB HN3 for HN2 on filter PCB 5 Pull out the clamp When reassembling insert the clamp as below 6 7 Remove the 2 upper screws Remove the lower screw Screw size A M4 16 B M4 8 Step Procedure Points HN...

Page 17: ...Procedure 15 8 Lift the main PCB ASSY 9 Unfasten the 4 hooks at the bottom 10 11 Remove the 8 screws Unfasten the 2 hooks and remove the main PCB Step Procedure Points R16813 Main PCB ASSY R19536 Hoo...

Page 18: ...he earth ground wire screw 2 Pull out the terminals from the terminal board Before pulling out the terminals confirm the terminal locations from the following patterns Pattern 1 1 black back 2 white b...

Page 19: ...Si001274EC PCBs Removal Procedure 17 3 Pull out the clamp 4 Release the harnesses from the groove 5 Remove the 2 screws Step Procedure Points R16816 R16817 R16818...

Page 20: ...274EC 18 Removal Procedure 6 Unfasten the 3 hooks of the filter PCB ASSY 7 8 Remove the screw Unfasten the 2 hooks and remove the filter PCB Step Procedure Points R18905 Filter PCB ASSY R14367 R19538...

Page 21: ...re disassembling work Step Procedure Points 1 Remove the 2 screws and remove the partition plate 2 Remove the sound blanket top upper The design of the sound blankets varies depending on the model 3 R...

Page 22: ...easily remove the sound blankets carefully 6 Remove the sound blanket inner 7 8 Release the discharge pipe thermistor Remove the thermistor ASSY Be careful not to lose the fixture for the thermistor...

Page 23: ...F For the sake of this wrap the four way valve with wet cloth and provide water so that the cloth does not dry Note Before working make sure that the refrigerant gas is empty in the circuit Be sure t...

Page 24: ...eat up the brazed part of the four way valve and disconnect 3 Heat up every brazed parts in turn and remove the four way valve 2 Remove the electronic expansion valve 1 Pull out the electronic expansi...

Page 25: ...e Electronic Expansion Valve Removal Procedure 23 2 Remove the sheets of putty 3 Heat up the 2 brazed parts of the electronic expansion valve and remove it Step Procedure Points R18909 Putty R22542 El...

Page 26: ...ng 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...

Page 27: ...tty 5 Remove the 2 nuts of the compressor 6 Heat up the brazed part of the discharge side and disconnect it 7 8 Heat up the brazed part of the suction side and disconnect it Lift up the compressor and...

Page 28: ...d contents 04 2013 Si001274 First edition 11 2013 Si001274EA Model addition RKS50 60GVM4 RKS50 60GVMV 03 2014 Si001274EB Model addition RXG50L2V1B 09 2015 Si001274EC Model addition RKS50J2V1B9 RKS60F3...

Page 29: ...es 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 access...

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