Related Manuals for Daikin 3MKS50ESG
Summary of Contents for Daikin 3MKS50ESG
- Page 1 Si121291EC REMOVAL PROCEDURE S E R V I C E M A N U A L 4.0/5.0/5.2/5.8/6.8 kW Class Outdoor Unit Inverter Multi Type...
- Page 2 Service Manual Removal Procedure Outdoor Unit Cooling Only Heat Pump 3MKS50ESG 3AMX52E4V1B 3MKS50FSG 3MXS40K3V1B 3MKS58KVM 3MXS52E4V1B 3MKS58LVMA 3MXS52KVM 3MKS58LVMA9 3MXS52LVMA 3MKS68LVMA 3MXS52LVMA9 3MKS68LVMA9 3MXS68G3V1B 3MXS68LVMA 3MXS68LVMA9 4MXS68F3V1B...
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Page 3: Table Of Contents
Si121291EC Table of Contents 1. Outer Panels ...................2 2. Electrical Box ..................4 3. PCBs .......................9 4. Fan Motor....................12 5. Sound Blankets ..................13 6. Coils / Thermistors ................16 7. Distributor....................18 8. Four Way Valve..................19 9. Compressor...................20 Note: The illustrations may be slightly different depending on the model. The illustrations are for heat pump models as representative. -
Page 4: Outer Panels
Outer Panels Si121291EC 1. Outer Panels Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the 4 screws The illustrations are for 3- Top panel and remove the top room models as panel. - Page 5 Si121291EC Outer Panels Procedure Points Step Remove the 4 screws and remove the discharge grille. Discharge grille (R12902) Remove the 2 screws of the stop valve cover. Stop valve cover (R11206) Slide the stop valve cover downward and remove it. (R5506) When reassembling, make sure to fit the 5 hooks.
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Page 6: Electrical Box
Electrical Box Si121291EC 2. Electrical Box Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Disconnect the harnesses. Peel off the fixing tape. Electrical box cover Hook Hook Unfasten the 4 hooks... - Page 7 Si121291EC Electrical Box Procedure Points Step Disconnect the [S20] (white) : room A connectors for the [S21] (red) : room B electronic expansion [S22] (blue) : room C [S20] [S21] [S22] valve coil. The 4-room model has [S23] (yellow) for room D. Pull out the clamp.
- Page 8 Electrical Box Si121291EC Procedure Points Step Disconnect each [S90] : thermistors connector. [S92] : gas pipe thermistors [S90] [S92] [S93] [S93] : liquid pipe thermistors When reassembling, insert each clamp of the thermistor harnesses into the holes as below. 50/58 class 3MXS52KVM, 3MXS52LVMA(9) For [S92] For [S93]...
- Page 9 Si121291EC Electrical Box Procedure Points Step 2. Remove the electrical box. Remove the 2 screws of the earth / ground wires. Earth / ground wire (R20762) Remove the screws on the terminal board and disconnect all the connecting wires and the power supply wire.
- Page 10 Electrical Box Si121291EC Procedure Points Step Remove the screw of the electrical box. Lift up and remove the electrical box. (R17760) Removal Procedure...
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Page 11: Pcbs
Si121291EC PCBs 3. 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 service monitor PCB. Hook [S102] Disconnect the connectors [S52] [S52] [S102] from the service monitor PCB. - Page 12 PCBs Si121291EC Procedure Points Step Disconnect the [AC1] [AC2] : power supply connectors for the [S10] : transmission [S10] [AC2] (blue) [AC1] (brown) terminal board on the right side. (R20763) Disconnect the 2 connectors for the reactor on the left side. [HR2] [HR1] Reactor...
- Page 13 Si121291EC PCBs Procedure Points Step Remove the main PCB. In working, be careful not to break the main PCB. The main PCB and the radiation fin are adhered to one another. (R5549) Remove the 2 screws and remove the radiation fin. (R11207) Clamp for reactor harness When reassembling, make...
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Page 14: Fan Motor
Fan Motor Si121291EC 4. Fan Motor Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the 2 screws and remove the fan motor fixing plate. (R5564) When reassembling, fit the lower hooks. -
Page 15: Sound Blankets
Si121291EC Sound Blankets 5. Sound Blankets 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 right side panel. Right side panel Remove the 3 screws of the right side panel. - Page 16 Sound Blankets Si121291EC Procedure Points Step 2. Remove the partition plate. Partition plate Remove the 2 screws of the partition plate. (R5575) Detach the clamp of the relay harness for the compressor. (R5576) Lift up and remove the partition plate. (R5580) When reassembling, make sure to fit the lower hook of...
- Page 17 Si121291EC Sound Blankets Procedure Points Step 3. Remove the sound Since the piping ports on the blankets. sound blanket are torn easily, remove the blanket Remove the sound carefully. blanket (top upper). The shape of the sound blankets differs depending on the model.
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Page 18: Coils / Thermistors
Coils / Thermistors Si121291EC 6. Coils / Thermistors Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Pull out the electronic expansion valve coils. Electronic expansion valve coil (R5588) Remove the screw and The cooling only models... - Page 19 Si121291EC Coils / Thermistors Procedure Points Step Pull out the gas pipe thermistors. Gas pipe thermistor (R5591) Clip Cut the clamp. Clamp Pull out the outdoor heat exchanger thermistor. (R5619) Be careful not to lose the clip. The positions of the clamp and outdoor heat exchanger Outdoor heat thermistor differ depending...
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Page 20: Distributor
Distributor Si121291EC 7. Distributor Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine. -
Page 21: Four Way Valve
Si121291EC Four Way Valve 8. Four Way Valve Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine. -
Page 22: Compressor
Compressor Si121291EC 9. Compressor Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine. - Page 23 Si121291EC Compressor Procedure Points Step Detach the overload protector. Overload protector Protection bushing Remove the protection bushing. (R12916) Remove the putty. Remove the 2 nuts. Putty (R17172) Heat up the brazed parts. (R17865) Remove the compressor. Compressor (R12917) Removal Procedure...
- Page 24 Revision History Month / Year Version Revised contents 09 / 2012 Si121291 First edition 02 / 2013 Si121291_A Model addition: 3AMX52E4V1B, 3MXS40K3V1B, 3MXS52E4V1B, 3MXS68G3V1B, 4MXS68F3V1B 08 / 2014 Si121291EB Model addition: 3MKS58/68LVMA9, 3MXS52/68LVMA9 04 / 2015 Si121291EC Model addition: 3MKS50FSG...
- Page 25 Improper installation can result in water or refrigerant leakage, electrical shock, fire or explosion. Use only those parts and accessories 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.