Daikin RK18NMVJU Service Manual
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Also See for RK18NMVJU:
- Removal procedure (27 pages) ,
- Engineering data (176 pages) ,
- Installation manual (39 pages)
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Summary of Contents for Daikin RK18NMVJU
- Page 1 Si001555EC REMOVAL PROCEDURE S E R V I C E M A N U A L 15000/18000/24000 Btu/h Class Outdoor Unit Inverter Pair Type...
- Page 2 Service Manual Removal Procedure Outdoor Unit Cooling Only Heat Pump RK18NMVJU RX18NMVJU RK24NMVJU RX24NMVJU RKN24NMVJU RX15QMVJU RX18QMVJU RX15RMVJU RX18RMVJU RX18RMVJU9 RX24RMVJU RXN18NMVJU RXN24NMVJU RXL15QMVJU...
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Page 3: Table Of Contents
Si001555EC Table of Contents 1. Outer Panels ...................2 2. Outdoor Fan / Fan Motor.................4 3. Electrical Box ..................7 4. PCB.......................11 5. Thermistor ASSY / Partition Plate ............14 6. Sound Blankets ..................17 7. Electronic Expansion Valve / Four Way Valve ........19 8. -
Page 4: Outer Panels
Outer Panels Si001555EC 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 6 screws Top panel and remove the top panel. (R21947) Remove the 8 screws Front panel... - Page 5 Si001555EC Outer Panels Step Procedure Points Unfasten the 2 hooks on the right side. Front panel Remove the front panel. (R21950) Hook Remove the 4 screws of the discharge grille. Discharge grille (R21951) Unfasten the 2 hooks and remove the discharge grille.
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Page 6: Outdoor Fan / Fan Motor
Outdoor Fan / Fan Motor Si001555EC 2. Outdoor Fan / 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 drip proof Drip proof cover cover. - Page 7 Si001555EC Outdoor Fan / Fan Motor Step Procedure Points Disconnect the [S70]: fan motor [S70] connector [S70]. (R21956) Pull out the clamp of the Clamp fan motor lead wire (on Top view the outer side of the electrical box). Fan motor lead wire Clamp (R21957)
- Page 8 Outdoor Fan / Fan Motor Si001555EC Step Procedure Points Remove the nut and Nut size : M8 remove the outdoor fan. 13 mm (0.51 inch) (R18965) Outdoor fan (R21960) Remove the 2 screws When reassembling, fit the 2 Fan motor fixing frame and remove the fan lower hooks into the bottom...
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Page 9: Electrical Box
Si001555EC Electrical Box 3. Electrical Box Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the 7 screws Terminal board on the terminal board and disconnect the connecting wire and power supply wire. - Page 10 Electrical Box Si001555EC Step Procedure Points Disconnect the [S80]: four way valve coil [S80] connector [S80] and pull out the clamp (Hole The cooling only models No.1). have no harness for [S80]. When reassembling, connect the connectors in the following order.
- Page 11 Si001555EC Electrical Box Step Procedure Points Pull out the clamp (Hole [S90]: thermistors [S90] No.15) and disconnect the connector [S90]. Clamp (R21999) 10 Pull out the 3 clamps (Hole No.3, 7, and 13). Clamp (R21969) 11 Pull out the clamp from Outdoor temperature the Hole No.14 and Slit...
- Page 12 Electrical Box Si001555EC Step Procedure Points 13 Disconnect the relay connector for compressor. Relay connector (R21971) 14 Remove the screw and remove the electrical box. Electrical box (R21972) Removal Procedure...
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Page 13: Pcb
Si001555EC 4. PCB Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the screw of Terminal board the terminal board. (R21973) Remove the earth / ground screw. - Page 14 Si001555EC Step Procedure Points Remove the earth / Earth / ground screw ground screw. (R21976) Cut the clamp (1) (Hole Relay harness No.5), pull out the clamp (2) (Hole No.12), and release the relay harness from the hook. Hook Clamp (2) Clamp (1) (R21977) Remove the 3 screws...
- Page 15 Si001555EC Step Procedure Points Remove the 7 screws of the PCB. (R20935) Unfasten the key hook, Key hook and then the other 5 hooks. Hook (R21997) Remove the PCB. (R20937) Removal Procedure...
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Page 16: Thermistor Assy / Partition Plate
Thermistor ASSY / Partition Plate Si001555EC 5. Thermistor ASSY / Partition Plate 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. - Page 17 Si001555EC Thermistor ASSY / Partition Plate Step Procedure Points Unfasten the 4 hooks When reassembling, make and remove the right sure to fit the rear hook. side panel. Hook Hook Right side panel (R21317) Hook Hook (R21981) 2. Remove the thermistor ...
- Page 18 Thermistor ASSY / Partition Plate Si001555EC Step Procedure Points Remove the thermistor ASSY. Thermistor ASSY (R20945) 3. Remove the partition plate. Pull out the clamp. Clamp (R21984) Remove the 2 screws When reassembling, fit the lower hook into the bottom and remove the partition plate.
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Page 19: Sound Blankets
Si001555EC Sound Blankets 6. Sound Blankets Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the sound Since the piping ports are Sound blanket blanket (back). - Page 20 Sound Blankets Si001555EC Step Procedure Points Remove the sound When reassembling, fit the blanket (inner). sound blankets in the following order. (1) inner (2) outer (3) back (4) top Sound blanket (inner) (R21989) Removal Procedure...
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Page 21: Electronic Expansion Valve / Four Way Valve
Si001555EC Electronic Expansion Valve / Four Way Valve 7. Electronic Expansion Valve / 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 Electronic Expansion Valve / Four Way Valve Si001555EC Step Procedure Points Remove the screw and The cooling only models Four way valve coil remove the four way have no four way valve coil. valve coil. (R21991) Remove the terminal Terminal cover cover.
- Page 23 Si001555EC Electronic Expansion Valve / Four Way Valve Step Procedure Points Remove the putty. When reassembling, make Four way valve sure that the four way valve is not inclined. Heat up the 2 brazed parts and remove the electronic expansion ...
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Page 24: Compressor
Compressor Si001555EC 8. 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 25 Si001555EC Compressor Step Procedure Points Remove the terminal Terminal cover cover. (R21992) Remove the protection Protection bushing V (yellow) U (red) W (blue) bushing. Disconnect the compressor lead wires and the overload protector. Overload protector (R21993) Heat up the brazed part Brazed part of the Brazed part of the of the discharge side...
- Page 26 Revision History Month / Year Version Revised contents 06 / 2015 Si001555E First edition 01 / 2016 Si001555EA Model addition: RXL15QMVJU 08 / 2018 Si001555EB Model addition: RX15QMVJU, RX18QMVJU, RX15RMVJU, RX18RMVJU, RX24RMVJU 08 / 2019 Si001555EC Model addition: RX18RMVJU9...
- Page 27 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 unauthorized parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage, electrical shock, fire or explosion.