Daikin RZQ100HY4A Manual de usuario

REMOVAL

PROCEDURE

SERVICE MANUAL

Outdoor Unit

Inverter

Pair Type

4/5/6 HP Class

Si281317

Service Manual

Removal Procedure

Outdoor Unit

Applicable Models

zHeat Pump

RZQ100HY4A

RZQ125HY4A

RZQ160HY4A

Si281317

Removal Procedure 1

Table of Contents

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

2. Procedure to Remove Propeller Fan and Fan Motor ..............................3

3. Procedure to Remove Switch Box ..........................................................4

4. Procedure to Remove PCB Assy (1).......................................................6

5. Procedure to Remove PCB Assy (2).......................................................7

6. Procedure to Remove PCB Assy (3).......................................................8

7. Procedure to Remove Low Pressure Sensor,

Electronic Expansion Valve, and Others.................................................9

8. Procedure to Remove Thermistor .........................................................10

9. Procedure to Remove Four Way Valve.................................................11

10.Procedure to Remove Compressor.......................................................12

Procedure to Remove Outside Panels Si281317

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

1For the suction grille,

pull the lower parts (in 7

places) frontward,

disengage the hooks at

the top of the grille with

a slotted screwdriver,

and then press the

overall grille downward

to disassemble it.

2For the front panel (side

front panel), unscrew a

single mounting screw

and then press this

panel downward to

remove it.

3For the top panel,

unscrew the 8 mounting

screws and then

remove this panel.

4For the front panel of

the piping cover,

unscrew a single

mounting screw and

then remove this panel.

5For the side panel of

the piping cover,

unscrew the 4 mounting

screws and then

remove this panel.

6For the side rear panel,

unscrew the 6 mounting

screws and then

remove this panel.

Hooks Suction grille

Top panel

Front panel of

piping cover

Front

panel Side panel of piping

cover

Side

rear

panel

Si281317 Procedure to Remove Propeller Fan and Fan Motor

Removal Procedure 3

2. Procedure to Remove Propeller Fan and Fan

Motor

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

supplies before disassembling work.

Step Procedure Points

Remove the front and top

panels in accordance with

the Procedure to remove

Outside Panels.

1. Remove the propeller fan

1Unscrew the 4 screws

that fix the air discharge

grille and disengage the

4 hooks at the top and

bottom of the grille, and

then remove this air

discharge grille.

2Unfasten the fan lock

nut that fixes the

propeller fan.

2. Remove the fan motor In order to disconnect the

connector, do not pull the

lead wire. Hold the

connector part and then

press the hooks.

Cautions in mounting the

motor

Be sure to fix the motor lead

wire with a clamp. Not

heeding this caution will

cause the entanglement of

the lead wire around the fan,

which will result in damage

to the fan.

1Remove the connector

for the fan motor from

the PCB.

(X206A, X207A)

2The lead wire is

clamped in 3 places.

(Click on partition

plate×3 places)

3Unscrew the 3 screws

that fix the front panel

and then pull up the

lead wire.

4Unfastening the 4 lock

bolts from the fan motor

enables the removal of

this fan motor.

Air discharge grille

Fan lock nut

Propeller fan

Hooks

Connector for fan motor

Screws

(3 numbers)

Clamp

Bolts (4 numbers)

Lead wire Propeller fan

Procedure to Remove Switch Box Si281317

4Removal Procedure

3. Procedure to Remove Switch Box

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

supplies before disassembling work.

Step Procedure Points

Remove the front and top

panels in accordance with

the Procedure to remove

Outside Panels.

If the top panel cannot be

removed, this switch box will

be able to be dismounted

without removing the top

panel.

1Remove all connectors

and Fasten terminals,

which have a

connection to the switch

box.

Remove the lead

wire from the

terminal of the high

pressure switch.

Remove the lead

wire of the

compressor from

the terminal cover of

this compressor.

Disconnect the relay

connector from the

lead wire of the

reactor.

Disconnect the relay

connector(s) from

the lead wire of the

fan motor(s).

Remove the lead

wire from the

terminal of the high

pressure switch and

low pressure

sensor.

Disconnect the

respective

connectors from the

following parts on

the PCB.

• Each thermistor

• Coil of four way

valve

• Coil of solenoid

valve

Fixing screw of

switch box

Si281317 Procedure to Remove Switch Box

Removal Procedure 5

2Unscrew the 2 screws

that fix the switch box.

3In order to remove the

switch box, disengage

the 3 hooks (1 on the

right and 2 on the left),

and then pull out this

switch box frontward or

upward.

Step Procedure Points

Hook

Procedure to Remove PCB Assy (1) Si281317

6Removal Procedure

4. Procedure to Remove PCB Assy (1)

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

supplies before disassembling work.

Step Procedure Points

Remove the front, top and

side panels in accordance

with the Procedure to

remove Outside Panels.

1. Remove the PCB (for

control)

1Disconnect all

connectors.

Remove the lead

wire from the

terminal cover of the

compressor.



Remove the lead

wire from the

terminal of the high

pressure switch and

low pressure sensor.

Disconnect the

respective

connectors from the

following parts on

the PCB.

• Each thermistor

• Four way valve

coil

• Solenoid valve

coil

2Unscrew a single

screw from the PCB

assy (for control

use).

Note:

The plastic casing and the PCB

are boned to each other.

Therefore, for the replacement

of these parts, replace by a set

of the PCB assy.

3In order to remove

the PCB (for control

use) from a fixing

plate, disengage the

3 hooks.

Fixing screw of PCB assy

(for control use)

Hooks

Plastic casing

PCB

Si281317 Procedure to Remove PCB Assy (2)

Removal Procedure 7

5. Procedure to Remove PCB Assy (2)

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

supplies before disassembling work.

Step Procedure Points

2. Remove the PCB (for

inverter)

1Disconnect all

connectors.

Unscrew the 3 screws

that fix the mounting

plate of electrical

components (for

control).

2Disengage the hooks in

2 places to remove the

mounting plate of

electrical components

(for control).

3In order to remove the

PCB assy (for inverter),

unscrew a single screw.

Note:

The plastic casing and the PCB are bonded to each

other. Therefore, for the replacement of these parts,

replace by a set of the PCB assy.

Hooks

Plastic casing

PCB

Fixing screw

Procedure to Remove PCB Assy (3) Si281317

8Removal Procedure

6. Procedure to Remove PCB Assy (3)

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

supplies before disassembling work.

Step Procedure Points

3. Remove the PCB unit (for

inverter).

1Unscrew the 4 screws

that fix the PCB and the

radiation fin.

2Disengage the 2 hooks,

and then while peeling

off silicon, remove the

PCB (for inverter).

3Disengage the 4

mounting screws to

remove the radiation

fin.

PCB mounting plate

Radiation fin

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