Daikin FCQ71KVLT User manual

REMOVAL

PROCEDURE

SERVICE MANUAL

Indoor Unit

Inverter

Pair Type

3/4/5/6 HP Class

Si281312E

Service Manual

Removal Procedure

Outdoor Unit

Applicable Models

zHeat Pump

FCQ71KVLT

FCQ100KVLT

FCQ125KVLT

FCQ140KVLT

Si281312E

Removal Procedure 1

Table of Contents

1. Procedure to Remove Air Filter and Suction Grille .................................2

2. Procedure to Remove Decoration Panel.................................................3

3. Procedure to Remove Horizontal Blade..................................................4

4. Procedure to Remove Swing Motor ........................................................6

5. Procedure to Remove Switch Box ..........................................................7

6. Procedure to Remove PCB.....................................................................8

7. Procedure to Remove Bell Mouth and Drain Pan ...................................9

8. Procedure to Remove Fan Motor..........................................................10

9. Procedure to Remove Drain Pump, Float Switch..................................11

10.Procedure to Remove Humidity Thermistor and

Air Temperature Thermistor ..................................................................12

11.Procedure to Remove Heat Exchanger Temperature Thermistor.........13

Procedure to Remove Air Filter and Suction Grille Si281312E

2Removal Procedure

1. Procedure to Remove Air Filter and Suction Grille

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

supplies before disassembling work.

Step Procedure Points

1. Removing the air filter Clean stains off the air filter

with a vacuum cleaner or

wash them off with water.

(Do not use hot water of

50°C or more temperature

for this purpose.)

After cleaning the air filter,

press the

button on the remote

controller.

(The message “Clean Filter”

will disappear from the

remote controller display.)

1Press the 2 buttons

simultaneously and pull

the suction grille down

slowly.

2Pull down the bottom

part of the air filter

once, and then

disengage the hole (2

places) for latch from

the protrusion

respectively.

3Hold up the air filter,

and then disengage the

hole (2 places) for latch

from the protrusion

located at the top end

respectively.

2. Removing the suction

grille

1Disengage the strings

(2 places) located at the

top of the suction grille

from the panel.

2Open the suction grille

to an angle of 45

degrees, and then hold

it up to unlatch the

latches located in 3

places.

Clean stains off the suction

grill using a soft brush with

water or mild detergent.

(Do not use hot water of

50°C or more temperature

for this purpose.)

Protrusion

Top of air filter

String

Protrusion

Bottom of

air filter

Bracket

String

Latches located in 3 places

Panel latches

Suction grille

Filter Sign Reset

Si281312E Procedure to Remove Decoration Panel

Removal Procedure 3

2. Procedure to Remove Decoration Panel

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

supplies before disassembling work.

Step Procedure Points

Removing the suction

grille according to

procedure for removing

the suction grille.

Relay connector

Corner cover string

Screw fixing the decoration

panel

According to the

procedure for the removal

of PCB, remove the lid

from the switch box and

disconnect the relay

connector for the swing

motor.

1. Removing the decoration

panel

1Pull down the corner

covers on the inner side

(i.e., the suction grille

side) to remove them.

2Remove the corner

cover strings.

3Unfasten the 4 screws

that fix the decoration

panel to the extent that

the panel is loosely

fixed.

4Unlatch the 4 outer

latches (A).

(At this time, make sure

the 2 inner latches (B)

are latched.)

5While holding the

decoration panel with

both hands, unlatch the

2 inner latches (B), and

then remove the

decoration panel.

Corner cover

Mounting screws

Mounting

screws

Hook

Outer latch (A)

(located in 4 places)

Hook

Inner latch (B)

(located in 2 places)

Relay connector

String Corner cover

Latch

Mounting screws

Hook

Procedure to Remove Horizontal Blade Si281312E

4Removal Procedure

3. Procedure to Remove Horizontal Blade

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

supplies before disassembling work.

Step Procedure Points

Removing the decoration

panel according to

procedure for removing

the decoration panel.

1. Remove the inner frame

from the decoration panel

1Unscrew the 4 screws

from the back of the

decoration panel.

2Remove the 4 seal

parts (A) from the back

of the decoration panel.

3Unscrew the 4 screws

from the front of the

decoration panel.

4Pull out the inner frame

straight from the

decoration panel.

2. Remove parts related to

heat insulation

1Remove heat insulation

from the 4 inner frames.

2Remove heat insulation

from the 4 corners.

3Remove a total of 8

bearing mounting

plates by unscrewing

screw, respectively.

Screw on the back side

(located in 4 places)

Seal part (A)

(located in 4 places)

Inner frame of

decoration panel Screw on the front side

(located in 4 places)

Heat insulation of corner

(located in 4 places)

Bearing mounting plates

(located in 8 places)

Heat insulation of inner frame

(located in 4 places)

Si281312E Procedure to Remove Horizontal Blade

Removal Procedure 5

3. Removing the horizontal

blade

1Remove the horizontal

blade assembly.

2To remove the

horizontal blade, put a

screwdriver in the

connection and apply

the “principle of

leverage”.

Step Procedure Points

Horizontal blade

assembly

Procedure to Remove Swing Motor Si281312E

6Removal Procedure

4. Procedure to Remove Swing Motor

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

supplies before disassembling work.

Step Procedure Points

According to the

procedure for the removal

of decoration panel,

remove the decoration

panel.

1Take the anti-sweat

part from the motor

casing.

2Unscrew the 2 screws

that fix the motor

casing, and then

remove the motor

casing.

3Disconnect the relay

harness connector from

the swing motor.

4Unscrew the 2 screws

that fix the swing motor,

and then remove the

swing motor.

Anti-sweat part

Screws fixing the motor

casing

Swing motor casing

Swing motor

Screws fixing the switch motor

Relay harness

connector

Swing motor

Si281312E Procedure to Remove Switch Box

Removal Procedure 7

5. 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

According to the

procedure for the removal

of decoration panel,

remove the decoration

panel.

1Unfasten the 2 screws

that fix the lid of the

switch box, and then

slide to remove the lid.

Disconnect every connector

while holding down the tab

beside the connector.

2Disconnect connectors

shown below from the

inside of the switch box.

·Flow switch connector

(X15A, white)

·Heat exchanger

thermistor connector

(X18A, red)

·Fan motor connector

(X20A, white)

·Drain pump connector

(X25A, white)

3Unscrew the 2 screws

that fix the switch box,

and then remove the

switch box.

Fixing screws

Switch box lid

X15AX20AX25A X18A

Fixing screws

Switch box

Procedure to Remove PCB Si281312E

8Removal Procedure

6. Procedure to Remove PCB

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

supplies before disassembling work.

Step Procedure Points

According to the

procedure for the removal

of decoration panel,

remove the decoration

panel.

1Unfasten the 2 screws

that fix the lid of the

switch box, and then

slide to remove the lid.

2Disconnect connectors

and others from the

PCB.

3Unscrew the 1 screw

that fixes the ground

cable (green).

4Press the 3 tabs to

remove the PCB.

Fixing screws

Switch box lid

Heat exchanger

thermistor

(X18A : Red)

Screw that fixes

the ground cable

Power supply

terminal block

(X27A : Black)

Float switch

(X15A : White)

Humidity thermistor

(X16A : White)

Swing motor

(X36A : Red)

Drain pump

(X25A : White)

Fan motor

(X20A : White)

Wired remote controller

(X30A : White)

Ta b

PCB

A-A View

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