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Removal of Electrical Box

Si12-995

16

Removal Procedure

2. Removal of Electrical Box

Procedure

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 2 screws
to detach the earth /
ground wires.

2

Disconnect the
connector for the fan
motor [S70].

3

Release the fan motor
lead wire.

+

: When reassembling, do not

use these 2 hooks.

(R10396)

[S70]

(R10397)

(R17268)

Fan motor lead wire

+

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Содержание 4MXS100EV2C

Страница 1: ...REMOVAL PROCEDURE S E R V I C E M A N U A L Outdoor Unit Inverter Multi Type 8 0 8 5 10 0 kW Class 32000 Btu h Class Si12 995 ...

Страница 2: ...Service Manual Removal Procedure Outdoor Unit zHeat Pump 4MXS100EV2C 4MXS32GVJU 4MXS80HVLD PMXS4GV2C ...

Страница 3: ...of Outer Panels 2 2 Removal of Electrical Box 16 3 Removal of PCBs 22 4 Removal of Fan Motor 26 5 Removal of Coils Thermistors 27 6 Removal of Sound Blankets 32 7 Removal of Compressor 35 Note The illustrations may be slightly different depending on the model ...

Страница 4: ...10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Appearance features 1 Remove the suction grille The hooks are secured in the clearances of the outdoor heat exchanger fins 1 Unfasten the 2 hooks at the bottom first R6368 Hook Rear side R14612 Suction grille R6370 ...

Страница 5: ... Slide the suction grille downward to unfasten the 3 top hooks 3 Remove the suction grille 2 Remove the top panel 1 Remove the 4 screws on the back and the screw on the left side panel Step Procedure Points Hook R14613 R6372 Top panel Left side panel R6373 ...

Страница 6: ... Procedure 2 Remove the 2 screws on the front and the screw on the right side panel 3 Lift the top panel and remove it 3 Remove the right side panel 1 Remove the 5 screws Step Procedure Points R6374 Right side panel R6375 R6376 Right side panel ...

Страница 7: ...Si12 995 Removal of Outer Panels Removal Procedure 5 2 Slide the right side panel downward to unfasten the 2 hooks on the back side Step Procedure Points R6377 Hook R14614 Hook R14615 ...

Страница 8: ... 2 screws to remove the service lid The US model has a conduit mounting plate 4 Remove the front panel 2 This screw is M5 16 1 Remove the 2 screws 2 Slide the front panel 2 downward to unfasten the hook Step Procedure Points R10441 Service lid Screw R10372 Lock nut Conduit Knockout hole R17351 Conduit mounting plate R10629 Front Panel 2 Front Panel 1 R10374 ...

Страница 9: ...el 2 5 Remove the front panel 1 Remove the discharge grille and outdoor fan first to remove the front panel 1 1 Remove the 4 screws on the discharge grille 2 Pull the bottom of the discharge grille Step Procedure Points R6383 R10375 R10376 Front Panel 1 Discharge grille R10377 ...

Страница 10: ...rd to unfasten the 2 hooks at the top 4 Remove the discharge grille 5 Remove the nut and remove the outdoor fan Nut size M8 When reassembling align the mark of the outdoor fan with the D cut section of the motor shaft Step Procedure Points R17173 Hook R10380 R10381 Outdoor fan 13 mm R12301 ...

Страница 11: ...Removal Procedure 9 6 Remove the 2 screws on the partition plate 1 7 Remove the screw at the bottom left of the front panel 1 8 Remove the screw at the bottom of the left side Step Procedure Points R10382 Partition plate 1 R10383 R6393 ...

Страница 12: ... 9 Remove the screw at the bottom of the back side 10 The front panel 1 has a hook Lift the front panel 1 11 Remove the front panel 1 Be sure to detach the front panel 1 carefully so as not to deform it Step Procedure Points R6394 R17174 Hook R10385 R6396 ...

Страница 13: ...plate 2 2 Slide the partition plate 2 to the left and remove it U S models When reassembling bundle the wires with clamp When reassembling pass the wires through the partition plate 2 Step Procedure Points R11209 Rear panel Partition plate 2 R10386 Rear panel Partition plate 2 R11211 Room A Room C Room D Room B power supply Clamp Partition plate 2 R17353 ...

Страница 14: ...ews on the wire fixing plate upper The U S models have no wire fixing plates upper and lower 4 Remove the wire fixing plate upper 5 Remove the 3 screws on the wire fixing plate lower Step Procedure Points R11210 Wire fixing plate upper R11213 R11214 Wire fixing plate lower ...

Страница 15: ...ing plate lower 7 Pull out the holder of the outdoor temperature thermistor The holder is secured in the clearances of the outdoor heat exchanger fins 8 Release the thermistor wire from the groove Step Procedure Points R11215 R10388 Outdoor temperature thermistor Groove R10389 ...

Страница 16: ...2 995 14 Removal Procedure 9 Remove the 3 screws on the rear panel 10 Remove the screw on the bottom frame 11 Remove the screw on the stop valve mounting plate Step Procedure Points R10390 R10391 R10392 Stop valve mounting plate ...

Страница 17: ...Si12 995 Removal of Outer Panels Removal Procedure 15 12 Lift the rear panel upward to unfasten the 2 hooks 13 Remove the rear panel Step Procedure Points Hook Hook R12918 R10394 ...

Страница 18: ...minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the 2 screws to detach the earth ground wires 2 Disconnect the connector for the fan motor S70 3 Release the fan motor lead wire When reassembling do not use these 2 hooks R10396 S70 R10397 R17268 Fan motor lead wire ...

Страница 19: ...ronic expansion valve coil S20 white room A S21 red room B S22 blue room C S23 yellow room D Pull out the clamp When reassembling insert each clamp into the small hole 6 Disconnect the connector for the liquid pipe thermistor S93 Pull out the clamp Step Procedure Points S80 Clamp R11187 A B C D Clamp R11188 For the electronic expansion valve coil S93 R17266 Clamp S93 R10400 ...

Страница 20: ...thermistors S90 Pull out the clamp When reassembling insert the clamp of the thermistor ASSY into the hole as below 9 The wire harness of the thermistor is hooked under the electrical box Unhook it and pull out the clamp Step Procedure Points S92 R10537 Clamp S92 R17267 S90 Clamp R10538 Thermistor ASSY R17142 Clamp Hook R6420 Fixing position for the thermistor harness When reassembling insert the ...

Страница 21: ... 10 Disconnect the connector for the overload protector S40 11 The wire harness for the compressor is attached to the partition plate 1 by the clamp 12 Pull out the clamp with pliers Step Procedure Points S40 R10539 Clamp R12904 Partition plate Clamp R6423 ...

Страница 22: ...ure 13 Disconnect the relay connector of the compressor 14 Remove the screw on the stop valve mounting plate 15 Remove the screw on the partition plate 1 Step Procedure Points R6469 R10395 Electrical box Stop valve mounting plate R6411 Partition plate 1 ...

Страница 23: ...f Electrical Box Removal Procedure 21 16 Slide the electrical box leftward to unfasten the hook on the right side of the electrical box 17 Lift up the electrical box and remove it Step Procedure Points R10401 Hook R10402 ...

Страница 24: ...re after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the main PCB 1 Remove the cover of the electrical box Release the 4 hooks The hooks are marked with W 2 Remove the 3 screws 3 Unfasten the 4 hooks 4 Lift up the main PCB Hook Hook R14617 R6427 R10404 Main PCB R10405 R10406 ...

Страница 25: ...ission HR1 HR2 reactor AC1 AC2 terminal board power supply U V W compressor 6 Remove the main PCB 2 Remove the reactor 1 Remove the screw 2 Remove the 3 screws and lift the reactor upward to remove it Step Procedure Points R10407 S10 S101 S51 W blue V yellow U red HR2 blue HR1 white AC2 blue AC1 brown R10408 R10409 Reactor R6434 ...

Страница 26: ...e service monitor PCB 1 Disconnect the connectors S52 S102 from the service monitor PCB 2 Slightly lift the top hook to detach 3 Unfasten the bottom hook and remove the service monitor PCB Step Procedure Points R10410 S102 S52 Service monitor PCB R6436 R6437 ...

Страница 27: ...Si12 995 Removal of PCBs Removal Procedure 25 4 Remove the terminal board 1 Remove the screw 2 Unfasten the hook 3 Remove the terminal board Step Procedure Points R10411 Terminal board R10412 R10413 ...

Страница 28: ...ocedure Points 1 2 Remove the 2 lower screws of the fan motor Remove the 2 upper screws Be sure to remove the lower screws first If the upper screws are removed first the fan motor may tilt or fall because the center of its gravity is toward the front It may cause injuries 3 Remove the fan motor When reassembling be sure to place the wire harness lower R10414 R6442 2 1 R10542 Fan motor R6444 Harne...

Страница 29: ...rk Step Procedure Points 1 Remove the electronic expansion valve coils 1 Pull out the electronic expansion valve coils 2 Remove the thermistors Place the thermistor so that its edge comes up to the edge of the fixture Be careful not to lose the clips for the thermistors 1 Pull out the gas pipe thermistors Electronic expansion valve coil R10415 R6446 Gas pipe thermistor R17412 R6448 Gas pipe thermi...

Страница 30: ...ty and pull out the liquid pipe thermistors Be careful not to lose the fixtures for the thermistors 3 Pull out the outdoor heat exchanger thermistor Step Procedure Points Liquid pipe thermistor R17413 R6450 Liquid pipe thermistor Fixture R10541 Outdoor heat exchanger thermistor ...

Страница 31: ...4 Remove the clip from the outdoor heat exchanger thermistor Be careful not to lose the clip 5 Slightly open the sound blanket outer 6 Remove the sound blanket top upper Step Procedure Points R6452 Clip R10418 Sound blanket outer R10419 Sound blanket top upper ...

Страница 32: ...stors Si12 995 30 Removal Procedure 7 Remove the discharge pipe thermistor 8 Remove the fixture 3 Remove the four way valve coil 1 Remove the screw Step Procedure Points R10420 Discharge pipe thermistor R10430 Fixture R10431 ...

Страница 33: ...Si12 995 Removal of Coils Thermistors Removal Procedure 31 2 Remove the four way valve coil Step Procedure Points R10432 Four way valve coil ...

Страница 34: ...efore disassembling work Step Procedure Points 1 Open the sound blanket outer 2 Remove the sound blanket top upper The sound blanket is fragile Carefully pass the blanket through the discharge pipe 3 Remove the screw from the partition plate 1 and push the plate to the left slightly for easy work R10433 Sound blanket outer R10434 Sound blanket top upper R10435 Partition plate 1 ...

Страница 35: ...through the discharge pipe 5 Remove the sound blanket top inner 6 Open the sound blanket inner and pass it through the part of the mufflers The sound blanket is fragile Be careful of the notches of the compressor mount 3 locations Step Procedure Points R10436 Sound blanket outer R10437 Sound blanket top inner R10438 Mufflers Sound blanket inner ...

Страница 36: ...Removal of Sound Blankets Si12 995 34 Removal Procedure 7 Remove the sound blanket inner Step Procedure Points R10439 ...

Страница 37: ...to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the terminal cover 2 Disconnect the compressor lead wires U red V yellow W blue 3 Remove the overload protector R6466 Terminal cover R9471 W blue U red Overload protector V yellow ...

Страница 38: ...e oil inside the four way valve and the deterioration of the gaskets affected by heat Keep below 120 C For the sake of this wrap the four way valve with wet cloth and provide water so that the cloth does not dry In case of difficulty with gas brazing machine 1 Disconnect the brazed part where is easy to disconnect and restore 2 Cut pipes on the main unit with a tube cutter in order to make it easy...

Страница 39: ...Revision History Month Year Version Revised contents 02 2013 Si12 995 First edition ...

Страница 40: ...ries 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 z Read the User s Manual carefully before using this product The User s Manual provides important safety instructi...

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