Related Manuals for Daikin RX18N5VL
Summary of Contents for Daikin RX18N5VL
- Page 1 Si001419E REMOVAL PROCEDURE S E R V I C E M A N U A L 18000 Btu/h Class Outdoor Unit Inverter Pair Type...
- Page 2 Service Manual Removal Procedure Outdoor Unit Heat Pump RX18N5VL...
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Page 3: Table Of Contents
Si001419E 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 Coil / Four Way Valve.......18 8. -
Page 4: Outer Panels
Outer Panels Si001419E 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. (R20902) Remove the 8 screws Front panel of the front panel. - Page 5 Si001419E Outer Panels Step Procedure Points Unfasten the 2 hooks on the right side. Front panel Remove the front panel. (R20905) Hook Remove the 4 screws Discharge grille of the discharge grille. (R20906) Unfasten the 6 hooks and remove the discharge grille.
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Page 6: Outdoor Fan / Fan Motor
Outdoor Fan / Fan Motor Si001419E 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 Si001419E Outdoor Fan / Fan Motor Step Procedure Points Disconnect the [S70]: fan motor connector [S70]. [S70] (R20911) Unfasten the clamp of the fan motor lead wire Top view (on the outer side of the electrical box). Fan motor lead wire Clamp (R20912) Release the fan motor...
- Page 8 Outdoor Fan / Fan Motor Si001419E Step Procedure Points Remove the nut and Nut size : M8 remove the outdoor fan. 13 mm (0.51 inch) (R18965) Outdoor fan (R20914) Remove the 2 screws When reassembling, fit the Fan motor fixing frame and remove the fan lower hooks into the bottom motor fixing frame.
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Page 9: Electrical Box
Si001419E 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 3 screws and remove the wire fixture. Wire fixture (R20919) Remove the 7 screws Terminal board on the terminal board... - Page 10 Electrical Box Si001419E Step Procedure Points Disconnect the [S80]: four way valve coil [S80] connector [S80] and pull out the clamp (Hole When reassembling, No.5). connect the connectors in the following order. Be sure to insert the wiring clamps of lead wires into the appropriate holes.
- Page 11 Si001419E Electrical Box Step Procedure Points Disconnect the [S40]: overload protector [S40] connector [S40] and pull out the 2 clamps (Hole No.16 and 2). Clamp Clamp (R20924) Disconnect the [S90]: thermistors [S90] Clamp connector [S90] and pull out the 4 clamps (Hole No.15, 13, 7, and [S90] Clamp...
- Page 12 Electrical Box Si001419E Step Procedure Points Remove the outdoor Outdoor temperature temperature thermistor. thermistor (R20927) Disconnect the relay connector for compressor. Relay connector (R20928) Remove the screw and remove the electrical box. Electrical box (R20929) Removal Procedure...
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Page 13: Pcb
Si001419E 4. PCB 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 3 terminals Before pulling out the from the terminal board. terminals, confirm the terminal locations. - Page 14 Si001419E Step Procedure Points Cut the clamp and release the relay Relay harness from the harness groove. Groove Clamp (R20933) Remove the 3 screws Mounting plate for terminal board of the mounting plate for terminal board. (R20934) Remove the 7 screws of the PCB.
- Page 15 Si001419E Step Procedure Points Unfasten the 6 hooks. Hook Hook (R20936) Remove the PCB. (R20937) Removal Procedure...
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Page 16: Thermistor Assy / Partition Plate
Thermistor ASSY / Partition Plate Si001419E 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. Remove the screw of the stop valve cover. - Page 17 Si001419E Thermistor ASSY / Partition Plate Step Procedure Points Unfasten the 3 hooks and remove the right side panel. Right side panel Hook Hook (R20942) 2. Remove the thermistor Be careful not to lose the clip ASSY. for the thermistor. Cut the clamp and pull out the outdoor heat Clamp...
- Page 18 Thermistor ASSY / Partition Plate Si001419E Step Procedure Points Remove the thermistor ASSY. Thermistor ASSY (R20945) 3. Remove the partition When reassembling, fit the plate. lower hook into the bottom frame. Remove the 2 screws and remove the partition plate. Partition plate Hook Bottom frame...
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Page 19: Sound Blankets
Si001419E 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 blanket (top). Sound blanket (top) (R20948) Open and pull up the Sound blanket sound blanket (outer). -
Page 20: Electronic Expansion Valve Coil / Four Way Valve
Electronic Expansion Valve Coil / Four Way Valve Si001419E 7. Electronic Expansion Valve Coil / 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 21 Si001419E Electronic Expansion Valve Coil / Four Way Valve Step Procedure Points Remove the screw and remove the four way valve coil. Four way valve coil (R20952) Remove the terminal cover. Terminal cover (R20953) Remove the protection Overload Protection bushing U (red) bushing.
- Page 22 Electronic Expansion Valve Coil / Four Way Valve Si001419E Step Procedure Points Heat up the 4 brazed Brazed part Four way valve parts and remove the four way valve. (R20955) Removal Procedure...
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Page 23: Compressor
Si001419E Compressor 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 24 Compressor Si001419E Step Procedure Points Remove the terminal cover. Terminal cover (R20953) Remove the protection Overload Protection bushing U (red) bushing. protector Disconnect the compressor lead wires and the overload protector. V (yellow) W (blue) (R20954) Heat up the brazed part Brazed part of the Brazed part of the of the discharge side...
- Page 25 Revision History Month / Year Version Revised contents 01 / 2015 Si001419E First edition...
- Page 26 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.