Daikin Indoor Unit Wall Mounted Type FTXG25EV1BW

With the power ON, operation OFF, and the connector connected, check the following

Output voltage between pins 1 and 3

Number of pulses between pins 2 and 3 when the fan motor is operating

If failure, identify the faulty part

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.

When assembling, fit the lower hooks.

Loosen the washer fitted nut to remove the propeller fan.

When assembling, align mark of the propeller fan with D-cut section of the motor shaft.

When assembling, make sure ! mark of the fan motor goes up.

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

1. Remove the electronic expansion valve coil

★ Illustrations are for 3 room model.

1 Remove the each electronic expansion valve coil.

2. Remove the four way valve coil

1 Loosen the 1 screw to remove the four way valve coil.

3. Remove the liquid/gas pipe thermistor

Meet the edge of the thermistor and clip.

The number of ports is different according to the models.

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.

Sign off on the capacitor voltage check

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

Be sure to apply nitrogen replacement when heating up the brazed part.

1. Restore the piping by nonoxidation brazing.

In case of you cannot use the nitrogen gas, restore as quickly as possible.

2. It is required to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat. For the sake of this, wrap the four way valve with wet cloth and provide water so that the cloth will not be dried and avoid excessive heating. (Keep below 120°C)

Be careful so as not to break the pipes by pressing it excessively by pliers when withdrawing it.

In case of the difficulty with gas brazing machine

1. Disconnect the brazed part where is easy to disconnect and restore.