Daikin Indoor Unit Wall Mounted Type FTXS35D3VMW

Warning: Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work.

Remove the fan motor fixing plate.

Remove the outer panels and plates.

Take out the fan motor fixing plate toward yourself.

Loosen the washer fitted nut to remove the propeller fan.

Undo the 2 fixing hooks of the lead wire.

Loosen the 4 screws of the fan motor.

Detach the 4 screws and 4 rubber vibration isolators.

2. Check motor power supply voltage output (pins 4-7 and 4-8).

3. Check motor control voltage (pins 4-3).

4. Check rotation command voltage output (pins 4-2).

5. Check rotation pulse input (pins 4-1).

2. Check motor control voltage output (pins 2-1).;

Warning: Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work.

Take care not to cut your finger by the fins of the heat exchanger.

Loosen the 4 screws (2 on both sides) of the top panel.

Loosen the 6 screws of the front panel.

Loosen the 2 screws (each 1 in front and back) of the clamp plate.

Slide the clamp plate to the left to undo the hooks and remove the plate.

Undo the upper 2 hooks to remove the front panel. Align the position of hole of the upper hook to pull the front panel out.

Lift the front panel up to remove the left side hooks and open the panel.

Conduct the followings to check the electronic expansion valve (EV).

1. Check to see if the EV connector is correctly inserted in the PCB. Compare the EV unit and the connector number.

2. Turn the power off and back on again, and check to see if all the EVs generate latching sound.

3. If any of the EVs does not generate latching noise in the above step 2, disconnect that connector and check the conductivity using a tester.

Check the conductivity between pins 1, 3 and 6, and between pins 2, 4 and 5. If there is no conductivity between the pins, the EV coil is faulty.

4. If no EV generates latching sound in the above step 2, the outdoor unit PCB is faulty.

5. If the conductivity is confirmed in the above step 2, mount a good coil (which generated latching sound) in the EV unit that did not generate latching sound, and check to see if that EV generates latching sound.

∗If latching sound is generated, the outdoor unit PCB is faulty.

Warning: Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work.

1 External appearance of model. the service PCB and the terminal board.

2 Loosen the 1 screw of the terminal board and open it.

3 Disconnect the connector [S52] and [S102] from the service PCB.

4 Widen the upper hook and pull the service PCB upward to remove.

1 Disconnect the each connectors on the terminal board.