Daikin 4MKS80ESG User manual

REMOVAL

PROCEDURE

SERVICE MANUAL

Outdoor Unit

Inverter

Multi Type

8.0/9.0/10.0 kW Class

Si121292EC

Service Manual

Removal Procedure

Outdoor Unit

zCooling Only zHeat Pump

4MKS80ESG 4MXS80KVM

4MXS100KVM

4MKS80FSG

4MXS80LVMA

4MKS80KVM 4MXS80LVMA9

4MKS100KVM

4MXS80E3V3B

4MKS80LVMA 5MXS90E3V3B

4MKS80LVMA9

Si121292EC

Removal Procedure 1

Table of Contents

1. Outer Panels ...........................................................................................2

2. Electrical Box ..........................................................................................6

3. PCBs .....................................................................................................11

4. Fan Motor..............................................................................................14

5. Coils / Thermistors ................................................................................15

6. Sound Blankets .....................................................................................18

7. Compressor...........................................................................................19

Note: The illustrations may be slightly different depending on the model.

The illustrations are for heat pump models as representative.

Outer Panels Si121292EC

2Removal Procedure

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

1. Remove the suction grille.

Unfasten the 5 hooks.

Remove the suction

grille.

2. Remove the top panel.

Remove the 8 screws.

Lift the top panel and

remove it.

3. Remove the right side

panel.

1Remove the 5 screws.

(R17585)

Hook

Suction grille

(R18781)

Top panel

(R17071)

Right side panel

Si121292EC Outer Panels

Removal Procedure 3

2Remove the right side

panel.

Slide the right side panel

downward to unfasten the 2

hooks on the rear side.

4. Remove the front panel

(2).

+: This screw is M5(3) × 16

Slide the front panel (2)

downward to unfasten the

hook.

1Remove the 2 screws

and remove the front

panel (2).

5. Remove the front panel

(1).

Remove the discharge grille

and the outdoor fan before

removing the front panel (1).

Remove the 4 screws

on the discharge grille.

Unfasten the 2 hooks at

the top and remove the

discharge grille.

Step Procedure Points

(R18911)

Hook

Front Panel (2)

Hook

(R18782)

(R18784)

Discharge grille

Front

Panel (1)

Hook

Outer Panels Si121292EC

4Removal Procedure

3Remove 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.

4Remove the 5 screws.

5Release the hook and

remove the front panel

(1).

6. Remove the rear panel. Disconnect the connecting

wires and power supply

wires.

1Remove the screw on

the partition plate (2).

2Slide the partition plate

(2) to the left and

remove it.

Step Procedure Points

Outdoor fan

(R16736)

13 mm

(0.51 inch)

(R18965)

(R18785)

(R17716)

(R17801)

Rear panel

Partition plate (2)

Room A Room B Power supply

Room C Room D

(R17903)

Si121292EC Outer Panels

Removal Procedure 5

3Remove the 5 screws

on the wire fixture

(upper).

4Remove the wire fixture

(upper).

5Remove the 3 screws

on the wire fixture

(lower).

6Remove the wire fixture

(lower).

7Release the holder and

harness of the outdoor

temperature thermistor.

8Remove the 5 screws.

9Unfasten the 2 hooks

and remove the rear

panel.

Step Procedure Points

(R17902)

Wire fixture

(upper)

(R17936)

Wire fixture

(lower)

Holder

(R17717)

Outdoor

temperature

thermistor

Hook

(R17718)

Electrical Box Si121292EC

6Removal Procedure

2. Electrical Box

Warning Be sure to wait for 10 minutes or more after turning off all power supplies before

disassembling work.

Step Procedure Points

1Remove the 2 screws

to detach the earth /

ground wires.

2Disconnect the

connector [S70].

[S70]: fan motor

3Release the fan motor

lead wire from the 5

hooks.

+: When reassembling, do not

use these 2 hooks.

(R20764)

Earth /

ground

wire

[S70]

(R10397)

(R17268)

Fan motor lead wire

Si121292EC Electrical Box

Removal Procedure 7

4Disconnect the

connector [S80] and

pull out the clamp.

[S80]: four way valve coil

The cooling only models

have no harness for [S80].

5Disconnect the 4

connectors for the

electronic expansion

valve coil and pull out

the clamp.

[S20] (white): room A

[S21] (red): room B

[S22] (blue): room C

[S23] (yellow): room D

5-room models also have

[S24] (green) for room E.

When reassembling, insert

each clamp into the hole.

6Disconnect the

connector [S93] and

pull out the clamp.

[S93]: liquid pipe thermistor

Step Procedure Points

[S80]

Clamp

(R11187)

[S20] [S21] [S22] [S23]

Clamp

(R20765)

For the electronic

expansion valve coil

For [S93]

(R17904)

Clamp

[S93]

(R10400)

Electrical Box Si121292EC

8Removal Procedure

7Disconnect the

connector [S92] and

pull out the clamp.

[S92]: gas pipe thermistor

When reassembling, insert

the clamp into the hole.

8Disconnect the

connector [S90] and

pull out the clamp.

[S90]: thermistor ASSY

When reassembling, insert

the clamp into the hole.

Release the thermistor

harness from the hook

at the bottom of

electrical box.

Pull out the clamp of the

thermistor harness from

the hole of the electrical

box.

Step Procedure Points

[S92]

(R10537)

Clamp

For [S92]

(R17905)

[S90]

Clamp

(R10538)

For thermistor ASSY

(R17906)

Clamp

Hook

(R6420)

Fixing position for the

thermistor harness

When reassembling, insert

the clamp into the hole.

This manual suits for next models

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