Daikin BPMKS048A2U, Service Manual

Page 1: ...REMOVAL PROCEDURE S E R V I C E M A N U A L Outdoor Unit Inverter Multi Type 11 2 14 0 16 0 kW Class 48000 Btu h Class Si181296_A...

Page 2: ...ice Manual Removal Procedure Outdoor Unit zCooling Only zHeat Pump RMKS112LV1A RMXS112LV1A RMKS140LV1A RMXS140LV1A RMKS160LV1A RMXS160LV1A RMXS48LVJU zBP Unit BPMKS967A2 BPMKS967A3 BPMKS048A2U BPMKS04...

Page 3: ...Fan Motors 12 1 4 Thermistors 13 1 5 Electronic Expansion Valves Peripheral Equipments 14 1 6 Four Way Valve 17 1 7 Compressor 18 2 BP Unit 21 2 1 PCB Assembly 21 2 2 Electronic Expansion Valve Coils...

Page 4: ...anel 2 Push the front panel 2 downward to release the hook and remove it Remove the screw and remove the piping cover front Remove the 4 screws and remove the piping cover rear Slide the outdoor tempe...

Page 5: ...protection nets To detach an air outlet protection net remove the 4 screws 9 10 Remove the 7 screws of the front panel 1 Push the front panel 1 upward and remove it On the rear side of the front panel...

Page 6: ...Step Procedure Points 1 Remove the terminal cover The U S models only M5 2 12 1 Remove the screw on the terminal cover upper and open the terminal cover upper 2 Remove the screw and open the terminal...

Page 7: ...mponents M5 3 12 1 Remove the 2 screws of the terminal mounting plate Except the U S models 2 Remove the screw above the electrical component assembly M5 3 12 3 Unfasten the clamp from the terminal mo...

Page 8: ...Outdoor Unit Si181296_A 6 Removal Procedure 4 Cut off the 3 clamps 5 Disconnect the relay connector for the reactor lead wire from each other Step Procedure Points R18066 R18067 R18068 R9225...

Page 9: ...06A X107A X106A X107A fan motor 7 Release the fan motor lead wires from the hooks 8 Release the lead wires of the solenoid valves and four way valve from the fixing plate and then remove the electrica...

Page 10: ...e compressor lead wires blue red white and the relay wires between A1P and A3P red blue from the hooks 10 Remove the 2 screws from LB red and NB blue on A3P and disconnect the 2 lead wires of condense...

Page 11: ...to A1P red blue and for the earth ground green Clamps 2 places for the compressor lead wires Clamp for the relay wires from A3P to A1P and for the earth ground 13 Push and unfasten the 2 hooks and sli...

Page 12: ...e reactor lead wire connectors compressor lead wire connector and all the other connectors from the main PCB Step Procedure Points X66A X81A X5A R12970 X66A X81A X5A X22A X21A X13A X11A X18A X17A X32A...

Page 13: ...17 Unfasten the 2 hooks at the rear side 18 The figures in the right are PCB assembly Step Procedure Points R9238 Hook R12972 Fixing plate for the PCB Electrical component mounting plate Cool heat se...

Page 14: ...or and pushing the engaging hook without pulling its lead wires When reassembling put the fan motor lead wire through the back of the fan motor so as not to be entangled with the outdoor fan Be sure t...

Page 15: ...s the yellow marking comes to the inside edge of the heat exchanger plate 2 Pull out the discharge pipe thermistor R2T 3 Pull out the suction pipe thermistors R3T R5T 4 Pull out the subcooling thermis...

Page 16: ...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 to apply nitrogen replacement...

Page 17: ...onnect the lead wires of the high pressure switch 4 Remove the screw and remove the solenoid valve coil for hot gas bypass 5 Remove the screw and remove the solenoid valve coil for unloading Step Proc...

Page 18: ...disconnect the brazed part of the high pressure switch 8 Heat up and disconnect the brazed parts of the solenoid valve Step Procedure Points R12981 Electronic expansion valve main Electronic expansion...

Page 19: ...r 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 to apply nitrogen replacement when he...

Page 20: ...d the deterioration of the gaskets affected by heat Keep below 120 C 248 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 work...

Page 21: ...crewdriver 3 Disconnect the terminals of the compressor 4 Remove the sound insulation for the compressor 5 Remove the crankcase heater at the lower of the compressor Pull the spring to release the cat...

Page 22: ...removed Remove the nuts in view first 7 Cut off the suction pipe discharge pipe and unloader pipe of compressor with a pipe cutter 3 places 8 Remove the compressor 9 Heat up and disconnect the brazed...

Page 23: ...not be replaced When reassembling conduct test operation for checking wrong wiring 2 Disconnect the connectors for the electronic expansion valve X20A X21A X22A X23A and the connector for the thermist...

Page 24: ...BP Unit Si181296_A 22 Removal Procedure 6 Disconnect all the relay cables 7 Remove the 2 screws and remove the PCB assembly Step Procedure Points Q0502 R12990 PCB assembly...

Page 25: ...after turning off all power supplies before disassembling work Step Procedure Points 1 Detach the clamp of the wire harnesses 2 Remove the 4 screws and remove the electrical component mounting plate 3...

Page 26: ...of the pipe insulation sleeves 5 Remove the putty 6 Cut off the clamps and pull out the electronic expansion valve coils Step Procedure Points Sealing material R12994 Q0513 R12993 Electronic expansio...

Page 27: ...Revision History Month Year Version Revised contents 12 2012 Si181296 First edition 04 2013 Si181296_A Model addition RMXS48LVJU BPMKS048A2U BPMKS049A3U...

Page 28: ...ies 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 acces...