Daikin FDXS25EV2C User manual

REMOVAL

PROCEDURE

SERVICE MANUAL

Indoor Unit

Inverter

Duct Connected Type

2.5/3.5/5.0 kW Class

Si07-863

Service Manual

Removal Procedure

Indoor Unit

zHeat Pump

FDXS25EV2C

FDXS35EV2C

FDXS50EV2C

PDXS25EV2C

PDXS35EV2C

Si07-863

Removal Procedure 1

Table of Contents

1. Removal of Air Filter................................................................................2

2. Removal of PCB (Room Air Conditioner Type).......................................4

3. Removal of Drain Pan.............................................................................6

4. Removal of Heat Exchanger ...................................................................7

5. Removal of Fan Rotor / Fan Motor........................................................10

6. Removal of Drain Pump Cover .............................................................14

7. Removal of Drain Pump ........................................................................15

8. Removal of Heat Exchanger Thermistors .............................................18

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

Removal of Air Filter Si07-863

2Removal Procedure

1. Removal of Air Filter

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

before disassembling work.

Step Procedure Points

1. Remove the air filter

Appearance

There are cases of rear

suction type and the bottom

suction type filters.

1Appearance

2. Remove the rear suction

type air filter

Rear suction type air filter

(The figure shows the view from the rear side.)

Details of the hook in the air

filter upper area

1Undo 2 top hooks and

pull the filter toward

your side.

2Lift up the filter and

undo the 2 bottom

hooks to remove the air

filter.

Details of the hook in the air

filter lower area

Top hooks

Si07-863 Removal of Air Filter

Removal Procedure 3

3. Remove the bottom

suction type air filter

Appearance (Bottom suction type air filter)

1Undo 2 hooks as shown

in the figure of the rear

suction type (previous

page).

2Undo the 2 positions in

the opposite side of the

hooks above. After that,

remove the air filter.

Step Procedure Points

Air filter

Removal of PCB (Room Air Conditioner Type) Si07-863

4Removal Procedure

2. Removal of PCB (Room Air Conditioner Type)

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

before disassembling work.

Step Procedure Points

1. Remove the electrical box

cover

1Remove the 2 screws

from the upper area.

2Lift up the electrical box

cover to undo the hooks

and remove the cover.

3Appearance of the

PCB. S1(White)

S21(White)

S7(White) S32(White) S26(White) Black White Red Green / Yellow

Si07-863 Removal of PCB (Room Air Conditioner Type)

Removal Procedure 5

2. Remove the PCB

1Pull the Faston

terminals out from the

terminal board with

pliers to remove them.

1: Black

2: White

3: Red

Earth cable: Green /

Yellow

2Disconnect the

connectors.

S1 (White): Fan motor

S7 (White): Fan motor

(For feedback)

S32 (White): Heat

exchanger thermistor

S26 (White): Photo

detector unit assembly

3Release the 3 bottom

hooks to remove the

PCB.

4Pull the lower part of

the PCB toward your

side and undo the 2 top

hooks.

5Remove the PCB.

Step Procedure Points

Black

White

Red

Green / Yellow

S1(White)

S7(White)

S32(White) S26(White)

Hooks

Removal of Drain Pan Si07-863

6Removal Procedure

3. Removal of Drain Pan

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

before disassembling work.

Step Procedure Points

1. Remove the bottom plate

1Remove the 11 screws

from the bottom plate.

2Slide the bottom plate

to your side and

remove the plate.

2. Remove the drain pan

1Remove the drain

socket cap.

2Grip the drain socket

area with your right

hand.

3Support the drain pan

with your both hands to

lower the pan and

remove it.

Si07-863 Removal of Heat Exchanger

Removal Procedure 7

4. Removal of Heat Exchanger

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

before disassembling work.

Step Procedure Points

1. Remove the heat

exchanger Warning

When any gas leakage is found,

repair the gas leakage points.

After that, collect all refrigerants

in the air conditioner, vacuum

dry the inside and then fill it with

refrigerant.

Warning

Do not entrain air or the like

other than the specified

refrigerant (R-410A) in the

refrigerating cycle. (If air is

entrained into the refrigerant

cycle, the inside of the

refrigerating cycle is

extraordinarily raised and will

cause an explosion or result in

injury.)

Caution

If any gas is leaked during the

operation, ventilate the room. (If

the refrigerant gas is exposed to

any flammable material, toxic

gas may occur.)

Caution

To prevent the heat exchanger

from dropping, be sure to

support it while you remove the

screws.

Make sure that the gases

are removed after the

pump down work. After

that, start the removal of

the heat exchanger.

Remove the drain pan

and the like before

starting the removal of the

heat exchanger.

1Cut one part in the

clamp to remove the

Faston terminal (earth

wire).

2Remove the 4 screws

from the heat

exchanger supporting

plate.

3Remove the heat

exchanger supporting

plate.

Heat exchanger

supporting plate

Removal of Heat Exchanger Si07-863

8Removal Procedure

4Cut one part in the

clamp in the heat

exchanger thermistor

area.

5Remove the heat

exchanger thermistor.

6Support the heat

exchanger to prevent it

from dropping while you

remove the 2 screws

from the left side of the

heat exchanger.

Note:

The Heat exchanger is fixed

with these 4 screws (2 in the

heat exchanger left side and

2 in the pipe line supporting

plate). Always support the

heat exchanger to prevent it

from dropping off while

removing the screws.

Step Procedure Points

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