Daikin Indoor Unit Wall Mounted Type FDXS25CAVMB

Warning: Check the main circuit for short-circuit before proceeding

Main circuit checked for short-circuit?

Warning: Be careful never to touch any live parts.

Measure the voltage according to the model's drawing

Upload a photo of the voltage reading

Sign off on the capacitor voltage check

Voltage of 320±30V is being applied

Stop the operation first and then the power, and disconnect the connector S70

DC voltage between pins 4 and 7

With the system and the power still off, reconnect the connector S70

Turn of the fan motor with a hand, and make sure the pulse (0-15 V) appears twice at pins 1 and 4

Is the fan motor protection fuse blown out?

If the fan motor protection fuse is blown out, the outdoor-unit fan may also be in trouble. Check the fan too

Is the voltage in Step (2) not applied?

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

Warning: Since it may happen that refrigeration oil in the compressor will catch fire, prepare wet cloth so as to extinguish fire immediately.

Warning: Ventilate when refrigerant leaks during the work. (If refrigerant contacts fire, it will cause to arise toxic gas.)

Caution: Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas welding rod.

Disconnect the flagshaped terminals.

Detach the compressor lead wire.

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.

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).;