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Daikin RX15RMVJU, Руководство по обслуживанию

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Electronic Expansion Valve / Four Way Valve

Si001555EC

20

Removal Procedure

2

Remove the screw and 
remove the four way 
valve coil.

The cooling only models 
have no four way valve coil.

3

Remove the terminal 
cover.

4

5

Remove the protection 
bushing.

Disconnect the 
compressor lead wires 
and the overload 
protector.

Step

Procedure

Points

Four way valve coil

(R21991)

Terminal cover

(R21992)

Protection bushing

Overload 
protector

V (yellow)

W (blue)

U (red)

(R21993)

Содержание RX15RMVJU

Страница 1: ...REMOVAL PROCEDURE S E R V I C E M A N U A L Outdoor Unit Inverter Pair Type 15000 18000 24000 Btu h Class Si001555EC ...

Страница 2: ...e Manual Removal Procedure Outdoor Unit Cooling Only Heat Pump RK18NMVJU RX18NMVJU RK24NMVJU RX24NMVJU RKN24NMVJU RX15QMVJU RX18QMVJU RX15RMVJU RX18RMVJU RX18RMVJU9 RX24RMVJU RXN18NMVJU RXN24NMVJU RXL15QMVJU ...

Страница 3: ...otor 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 Compressor 22 Note The illustrations may be slightly different depending on the model The illustrations are for heat pump models as representative ...

Страница 4: ...r turning off all power supplies before disassembling work Step Procedure Points 1 Remove the 6 screws and remove the top panel 2 Remove the 8 screws of the front panel 3 Slide the fan motor fixing frame to the left and unfasten the 2 hooks Top panel R21947 Front panel R21948 Hook Fan motor fixing frame R21949 ...

Страница 5: ... 4 5 Unfasten the 2 hooks on the right side Remove the front panel 6 Remove the 4 screws of the discharge grille 7 Unfasten the 2 hooks and remove the discharge grille Step Procedure Points Hook Front panel R21950 Discharge grille R21951 R21952 ...

Страница 6: ... or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the drip proof cover 2 Remove the 2 screws of the terminal cover 3 4 Open the terminal cover and pull down to unfasten the 2 hooks Remove the terminal cover Drip proof cover R21953 Terminal cover R21954 Hook R21955 ...

Страница 7: ... side of the electrical box 7 Release the fan motor lead wire from the groove and unfasten the 2 hooks When reassembling fit the fan motor lead wire into the slit at the back of the fan motor fixing frame Step Procedure Points S70 R21956 Top view Clamp Fan motor lead wire Clamp R21957 Hook Fan motor lead wire Groove R21958 Fan motor fixing frame Slit R21959 ...

Страница 8: ...frame When reassembling fit the 2 lower hooks into the bottom frame 10 Unfasten the 3 hooks on the fan motor fixing frame and release the fan motor lead wire 11 Remove the 4 screws and remove the fan motor Step Procedure Points Outdoor fan Nut R21960 13 mm 0 51 inch R18965 Fan motor fixing frame R21961 Hook R20916 Hook Fan motor lead wire R21962 Fan motor R21963 ...

Страница 9: ...d disconnect the connecting wire and power supply wire Loosen the 2 nuts of the conduits and remove the connecting wire and power supply wire 3 Remove the 2 screws and remove the conduit mounting plate When reassembling fit the 2 hooks of the conduit mounting plate to the right side panel 4 Remove the 2 screws Power supply wire Connecting wire Nut Conduit Terminal board R21964 Conduit mounting pla...

Страница 10: ...ad wires into the appropriate holes 1 S90 Hole No 15 14 13 7 3 2 S40 Hole No 16 2 3 S20 Hole No 11 4 S80 Hole No 1 6 Disconnect the connector S20 and pull out the clamp Hole No 11 S20 electronic expansion valve coil 7 8 Pull out the clamp Hole No 16 and disconnect the connector S40 Pull out the clamp Hole No 2 Step Procedure Points S80 Clamp R21967 14 15 16 17 13 Hole No for wiring clamps 1 3 5 7 ...

Страница 11: ...ull out the clamp from the Hole No 14 and release the outdoor temperature thermistor harness from the slit 12 Remove the outdoor temperature thermistor The design of the outdoor temperature thermistor varies depending on the model Step Procedure Points S90 Clamp R21999 Clamp R21969 Outdoor temperature thermistor harness Slit Clamp R21970 Outdoor temperature thermistor R20927 ...

Страница 12: ...rical Box Si001555EC 10 Removal Procedure 13 Disconnect the relay connector for compressor 14 Remove the screw and remove the electrical box Step Procedure Points Relay connector R21971 Electrical box R21972 ...

Страница 13: ...s or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the screw of the terminal board 2 Remove the earth ground screw 3 Pull out the clamp 1 and cut the clamp 2 Terminal board R21973 Earth ground screw R21974 Clamp 2 Clamp 1 R21975 ...

Страница 14: ...p 1 Hole No 5 pull out the clamp 2 Hole No 12 and release the relay harness from the hook 6 Remove the 3 screws of the mounting plate for terminal board Step Procedure Points Earth ground screw R21976 Relay harness Hook Clamp 1 Clamp 2 R21977 Mounting plate for terminal board R21978 ...

Страница 15: ...Si001555EC PCB Removal Procedure 13 7 Remove the 7 screws of the PCB 8 Unfasten the key hook and then the other 5 hooks 9 Remove the PCB Step Procedure Points PCB R20935 Hook Key hook R21997 PCB R20937 ...

Страница 16: ...off all power supplies before disassembling work Step Procedure Points 1 Remove the right side panel 1 Remove the screw of the stop valve cover 2 Slide the stop valve cover downward and remove it When reassembling make sure to fit the 3 hooks 3 Remove the 4 screws of the right side panel Stop valve cover R21979 R21980 Hook Hook R20940 Right side panel R20941 ...

Страница 17: ...se the clip for the thermistor 1 Cut the clamp and pull out the outdoor heat exchanger thermistor 2 Open the sound blanket top and detach the discharge pipe thermistor Be careful not to lose the fixture for the thermistor Step Procedure Points Right side panel Hook Hook Hook R21981 Hook R21317 Clamp Outdoor heat exchanger thermistor R21982 R20852 Clip Sound blanket top Discharge pipe thermistor R2...

Страница 18: ...ermistor ASSY 3 Remove the partition plate 1 Pull out the clamp 2 Remove the 2 screws and remove the partition plate When reassembling fit the lower hook into the bottom frame Step Procedure Points Thermistor ASSY R20945 Clamp R21984 Partition plate R21985 Hook Bottom frame R20947 ...

Страница 19: ...ff all power supplies before disassembling work Step Procedure Points 1 Remove the sound blanket back Since the piping ports are torn easily remove the sound blanket carefully 2 Remove the sound blanket top 3 Open and pull up the sound blanket outer Sound blanket back R21986 Sound blanket top R21987 Sound blanket outer R21988 ...

Страница 20: ...kets Si001555EC 18 Removal Procedure 4 Remove the sound blanket inner When reassembling fit the sound blankets in the following order 1 inner 2 outer 3 back 4 top Step Procedure Points Sound blanket inner R21989 ...

Страница 21: ...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 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 means because the sawdust comes into the circu...

Страница 22: ...e coil The cooling only models have no four way valve coil 3 Remove the terminal cover 4 5 Remove the protection bushing Disconnect the compressor lead wires and the overload protector Step Procedure Points Four way valve coil R21991 Terminal cover R21992 Protection bushing Overload protector V yellow W blue U red R21993 ...

Страница 23: ...parts and remove the electronic expansion valve Heat up the 4 brazed parts and remove the four way valve When reassembling make sure that the four way valve is not inclined The cooling only models have no four way valve Step Procedure Points Four way valve Electronic expansion valve Putty Brazed part Brazed part R25444 ...

Страница 24: ...Restore the piping by non oxidation brazing 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 means because the sawdust comes into the circuit When withdrawing the pipes be careful not to pinch them firmly with pliers The pipes may get deformed Provide ...

Страница 25: ...e brazed part of the discharge side pipe and disconnect it Heat up the brazed part of the suction side pipe and disconnect it Remove the 3 nuts Lift up the compressor and remove it Step Procedure Points Terminal cover R21992 Protection bushing Overload protector V yellow W blue U red R21993 Brazed part of the discharge side pipe Brazed part of the suction side pipe Compressor Nut R22759 ...

Страница 26: ...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 ...

Страница 27: ...ssories 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 Read the user s manual carefully before using this product The user s manual provides important safety instruct...

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