Daikin RX18N5VL User manual

REMOVAL

PROCEDURE

SERVICE MANUAL

18000 Btu/h Class

Outdoor Unit

Inverter

Pair Type

Si001419E

Service Manual

Removal Procedure

Outdoor Unit

zHeat Pump

RX18N5VL

Si001419E

Removal Procedure 1

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. Compressor...........................................................................................21

Outer Panels Si001419E

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

1Remove the 6 screws

and remove the top

panel.

2Remove the 8 screws

of the front panel.

3Slide the fan motor

fixing plate to the left

and unfasten the 2

hooks.

Top panel

(R20902)

Front panel

(R20903)

Hook

Fan motor fixing plate

(R20904)

Si001419E Outer Panels

Removal Procedure 3

Unfasten the 2 hooks

on the right side.

Remove the front panel.

6Remove the 4 screws

of the discharge grille.

7Unfasten the 6 hooks

and remove the

discharge grille.

Step Procedure Points

Hook

Front panel

(R20905)

Discharge grille

(R20906)

Discharge grille

(R20907)

Outdoor Fan / Fan Motor Si001419E

4Removal Procedure

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

1Remove the drip proof

cover.

2Remove the 2 screws

of the terminal cover.

Open the terminal cover

and pull down to

unfasten the 2 hooks.

Remove the terminal

cover.

Drip proof cover

(R20908)

Terminal

cover

(R20909)

Hook

Terminal cover

(R20910)

Si001419E Outdoor Fan / Fan Motor

Removal Procedure 5

5Disconnect the

connector [S70].

[S70]: fan motor

6Unfasten the clamp of

the fan motor lead wire

(on the outer side of the

electrical box).

7Release the fan motor

lead wire from the

groove and unfasten

the 2 hooks.

Step Procedure Points

[S70]

(R20911)

Fan motor

lead wire

Clamp

(R20912)

Top view

Fan motor lead wireGrooveHook

(R20913)

Outdoor Fan / Fan Motor Si001419E

6Removal Procedure

8Remove the nut and

remove the outdoor fan.

Nut size : M8

9Remove the 2 screws

and remove the fan

motor fixing frame.

When reassembling, fit the

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

Nut Outdoor fan (R20914)

13 mm

(0.51 inch)

(R18965)

Fan motor fixing frame

(R20915)

Hook (R20916)

Hook

Fan motor lead wire

(R20917)

Fan motor (R20918)

Si001419E Electrical Box

Removal Procedure 7

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

1Remove the 3 screws

and remove the wire

fixture.

2Remove the 7 screws

on the terminal board

and disconnect the

connecting wire and

power supply wire.

3Remove the 2 screws.

Wire fixture

(R20919)

Connecting wire Power supply wire

Terminal board

(R20920)

(R20921)

Electrical Box Si001419E

8Removal Procedure

4Disconnect the

connector [S80] and

pull out the clamp (Hole

No.5).

[S80]: four way valve coil

When reassembling,

connect the connectors in

the following order. Be sure

to insert the wiring clamps of

lead wires into the

appropriate holes.

(1) [S90]: Hole No.15,

14, 13, 7, 3

(2) [S40]: Hole No.16, 2

(3) [S20]: Hole No.10

(4) [S80]: Hole No.5

5Disconnect the

connector [S20] and

pull out the clamp (Hole

No.10).

Step Procedure Points

[S80]

Clamp

(R20922)

1516

Hole No. for wiring clamps

135 7 911

2 4 6 8 10 12

(R20993)

[S20]

Clamp

(R20923)

[S20]: electronic expansion

valve coil

Table of contents

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