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Si121557E

Water Heater

Removal Procedure

2. Water Heater

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 heater
cover.

Pull out the water
heater thermistor.

Disconnect the
connector of the water
heater cable.

Heater cover

(R13719)

(R13720)

Water heater
thermistor

(R13721)

(R13722)

Содержание 3MWKS80LV1

Страница 1: ...REMOVAL PROCEDURE S E R V I C E M A N U A L 80 kW Class Outdoor Unit Inverter Multi Type Si121557E...

Страница 2: ...Service Manual Removal Procedure Outdoor Unit zCooling Only 3MWKS80LV1 zWater Heater TUL 55KVM TUL 75KVM TUL 100KVM TUR 55KVM TUR 75KVM TUR 100KVM...

Страница 3: ...Unit 2 1 1 Outer Panels Outdoor Fan 2 1 2 Fan Motor 10 1 3 Electrical Box 12 1 4 PCBs 18 1 5 Reactor 24 1 6 Coils Thermistors 25 1 7 Sound Blankets 27 1 8 Compressor 29 2 Water Heater 31 Note The illu...

Страница 4: ...ocedure Points 1 Remove the suction grille The hooks are secured in the clearances of the outdoor heat exchanger fins 1 2 Unfasten the 5 hooks Remove the suction grille 2 Remove the top panel 1 2 Remo...

Страница 5: ...t Removal Procedure 3 2 Slide the front panel 2 downward to release the hook 3 Remove the front panel 2 4 Remove the right side panel 1 Remove the 2 screws Step Procedure Points R21942 Hook R13639 Rig...

Страница 6: ...Outdoor Unit Si121557E 4 Removal Procedure 2 Slide the right side panel downward to unfasten the 2 hooks on the back side Step Procedure Points R13645 Hook R6378 Hook R13646...

Страница 7: ...on the discharge grille 2 3 Slide the discharge grille downward to unfasten the 2 hooks at the top Remove the discharge grille 4 Remove the nut and remove the outdoor fan Nut size M8 When reassembling...

Страница 8: ...he 5 screws on the front panel 1 6 Release the hook and remove the front panel 1 6 Remove the rear panel 1 Remove the screw on the partition plate 2 and remove the partition plate 2 Step Procedure Poi...

Страница 9: ...emoval Procedure 7 2 Remove the 5 screws and remove the wire fixture 3 Disconnect the connecting wires 4 Disconnect the connector S402 S402 water heater thermistor Step Procedure Points R21944 Wire fi...

Страница 10: ...lamp as below 6 Remove the water heater thermistor 7 Pull out the holder of the outdoor temperature thermistor The holder is secured in the clearances of the outdoor heat exchanger fins Step Procedure...

Страница 11: ...moval Procedure 9 8 Release the thermistor wire from the groove 9 Remove the 5 screws 10 11 Lift the rear panel upward to unfasten the 2 hooks Remove the rear panel Step Procedure Points Groove R10389...

Страница 12: ...more after turning off all power supplies before disassembling work Step Procedure Points 1 Cut the 2 clamps 2 Disconnect the connector S70 S70 fan motor 3 Release the fan motor lead wire from the 5...

Страница 13: ...remove the lower screws first If the upper screws are removed first the fan motor may tilt or fall because its centre of gravity shifts to the front It may cause injuries 6 Remove the fan motor When...

Страница 14: ...ad wire from the 5 hooks When reassembling do not use these 2 hooks 3 Disconnect the connectors for the electronic expansion valve coils S20 S21 S22 Pull out the clamp S20 white room A S21 red room B...

Страница 15: ...out the clamp S80 four way valve coil 5 Disconnect the connector S92 Pull out the clamp S92 gas pipe thermistors each room water heater 6 Disconnect the connector S90 Pull out the clamp S90 thermisto...

Страница 16: ...of the electrical box Pull out the clamp 8 Disconnect the connector S40 Pull out the clamp S40 overload protector high pressure switch 9 Disconnect the relay connector for the compressor 10 Pinch the...

Страница 17: ...5 11 Remove the screw on the stop valve mounting plate 12 Remove the screw on the partition plate 1 13 Remove the 2 screws to detach the earth ground wires Step Procedure Points Stop valve mounting pl...

Страница 18: ...16 Removal Procedure 14 Cut the clamp 15 Pull out the outdoor heat exchanger thermistor Be careful not to lose the clip for the thermistor Step Procedure Points R13677 R13678 Outdoor heat exchanger t...

Страница 19: ...harge pipe thermistor under the sound blanket top upper Be careful not to lose the clip for the thermistor 17 Lift up the electrical box and remove it Step Procedure Points R13679 Sound blanket top up...

Страница 20: ...mbling work Step Procedure Points 1 Remove the electrical box cover 1 Peel off the filament tape 2 Unfasten the 4 hooks and remove the electrical box cover The hooks are marked with 2 Remove the filte...

Страница 21: ...Remove the screw and release the earth ground wire 4 Pull out the 6 spacers with pliers and remove the filter PCB Step Procedure Points 1 2 3 1 2 3 1 2 3 A L N POWER SUPPLY B C S404 R13684 1 2 3 1 2 3...

Страница 22: ...isconnect the connector S102 2 Disconnect the connector S52 S52 to main PCB 3 Unfasten the 2 hooks and remove the service monitor PCB 4 Remove the main PCB 1 Remove the screw Step Procedure Points 1 2...

Страница 23: ...door Unit Removal Procedure 21 2 Unfasten the hook 3 Open the terminal board 4 Disconnect the connectors Step Procedure Points R13691 Terminal board R13692 R15742 blue blue white black brown red white...

Страница 24: ...ocedure 5 Disconnect the 2 connectors for the reactor HR1 HR2 HR1 white HR2 blue 6 Release the harnesses from the hook 7 Release the harnesses from the hook 8 Remove the 3 screws Step Procedure Points...

Страница 25: ...Si121557E Outdoor Unit Removal Procedure 23 9 Unfasten the 4 hooks and remove the main PCB Step Procedure Points Main PCB S51 S40 S20 S70 S90 S21 S22 S92 S93 S10 S80 HR2 HR1 R13698...

Страница 26: ...g Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the screw of the resin clamp 2 Remove the 3 screws of the reactor...

Страница 27: ...ies before disassembling work Step Procedure Points 1 Remove the screw and remove the four way valve coil 2 Disconnect the relay connector for the high pressure switch lead wire 3 Remove the high pres...

Страница 28: ...electronic expansion valve coils 5 Cut the clamps of the gas pipe thermistor 6 Pull out the gas pipe thermistors Step Procedure Points R13704 Electronic expansion valve coil R13705 Gas pipe thermistor...

Страница 29: ...pplies before disassembling work Step Procedure Points 1 Remove the 2 sound blankets top upper top lower The sound blanket is fragile Carefully pass the blanket through the discharge pipe 2 Open the s...

Страница 30: ...57E 28 Removal Procedure 4 Remove the sound blanket inner through the mufflers The sound blanket is fragile Be careful of the notches of the compressor mount 3 locations Step Procedure Points Sound bl...

Страница 31: ...e refrigerant gas 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 b...

Страница 32: ...e bushing 5 Remove the 3 nuts 6 7 8 Heat up the brazed part of the discharge side and disconnect the part a Heat up the brazed part of the suction side and disconnect the part b Lift up the compressor...

Страница 33: ...r more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the 2 screws and remove the heater cover 2 Pull out the water heater thermistor 3 Disconnect the co...

Страница 34: ...Revision History Month Year Version Revised contents 05 2015 Si121557E First edition...

Страница 35: ...sories 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 ac...

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