Daikin R21NUV1 User manual

REMOVAL

PROCEDURE

SERVICE MANUAL

Outdoor Unit

Non-Inverter

Pair Type

2.5 HP Class

Si241307

Service Manual

Removal Procedure

Outdoor Unit

Applicable Models

zCooling Only

R21NUV1

Si241307

Removal Procedure 1

Table of Contents

1. Procedure to Remove Outside Panels....................................................2

2. Procedure to Remove El. Compo. Box ...................................................3

3. Procedure to Remove Compressor.........................................................6

Procedure to Remove Outside Panels Si241307

2Removal Procedure

1. Procedure to Remove Outside Panels

Procedure Warning Be sure to wait for 10 minutes or more after turning off all power

supplies before disassembling work.

Step Procedure Points

1To dismount the top

panel, remove the 4

mounting screws (A).

2To dismount the front

panel, remove the 6

mounting screws (B).

3To dismount the service

cover, remove the 2

mounting screws.

4To dismount the side

panel, remove the 6

mounting screws.

Interconnecting

wire terminal

Power supply

terminal

Earth terminal

Top panel

(A)

Service cove

Side panel

(B)

Front panel

(B)

(A)

(B)

(C)

(C)(C)

Side plate

Si241307 Procedure to Remove El. Compo. Box

Removal Procedure 3

2. Procedure to Remove El. Compo. Box

Procedure Warning Be sure to wait for 10 minutes or more after turning off all power

supplies before disassembling work.

Step Procedure Points

1Remove the wire

harness connectors

from the PCB.

2Dismount the outdoor

air thermistor and the

heat exchanger

thermistor.

Attach to the 3rd

row of heat

exchanger pipe at

30mm from the left

end.

Route thermistor

wire through the

specified section to

prevent wire pinching.

Thermistor

Thermistor retaining spring

Procedure to Remove El. Compo. Box Si241307

4Removal Procedure

Step Procedure Points

Terminal code is printed. Do

not scorch the indication with

the flame of welder.

Also record terminal code

ON a memo paper in case

the indication becomes

illegible.

Connect the lead wires to

the proper fasten terminals.

S….Yellow

M….Red

C….Blue

3Remove the terminal

cover.

4Remove the

compressor protective

device and the 3

terminals together with

the mounting plate.

S yellow M red

C blue

Blue Yellow

Red

Si241307 Procedure to Remove El. Compo. Box

Removal Procedure 5

Step Procedure Points

5Remove the screw.

6Take off the el. compo.

box.

Procedure to Remove Compressor Si241307

6Removal Procedure

3. Procedure to Remove Compressor

Procedure Warning Be sure to wait for 10 minutes or more after turning off all power

supplies before disassembling work.

Step Procedure Points

Make sure that refrigerant

is completely empty in the

circuit before

disassembling. Warning

If refrigerant gas leaks during

servicing work, ventilate the

area. (If refrigerant gas

contacts flames, hazardous

gas can be generate.)

1Disconnect the suction

pipe and the discharge

pipe of the compressor

at brazed sections.

Discharge

pipe

Suction pipe

Si241307 Procedure to Remove Compressor

Removal Procedure 7

Step Procedure Points

2After disconnecting the

refrigerant pipes,

remove the 3 washer

nuts that secure the

compressor. Use open-

end washer nut (a)

located on the right

front side.

3Use T-handle box

wrench to loosen the

nuts (b) and (c).

(a)

(c)

(b)

Open-end

wrench

T-handle box wrench

Revision History

Month / Year Version Revised contents

01 / 2013 Si241307 First edition

Table of contents

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