24
7.2.3 Only outdoor unit does not work.
7.2.4 Indoor unit does not work.
7.3 Some parts of the air conditioner do not work
7.3.1 Only indoor fan does not work.
7.3.2 Only louver motor does not run.
No
Yes
Check the set
temperature
1. The set temperature is too high in cooling.
2. The set temperature is too low in heating.
Adjust the set
temperature
Measure the voltage between terminal No.1 and
No.2 on the terminal block (220-240V)
PCB Ass’ y of indoor unit is defective.
Outdoor unit
is defective.
Ok
No voltage indication
Indoor PCB Ass’ y is defective.
Check the fan rotation
Check if foreign matter is in
the fan cover.
Check if fan motor is broken
or foreign matter in bearing.
Measure the resistance of motor coil.
Check the capacitor of fan motor.
Ok
Ok
Not rotate
Measure the resistance of the louver motor coil.
Replace louver motor.
To check whether the butt plugs of louver motor
are connected well.
Integrate circuit ‘ULN2003’ is defective.
Plug well.
Ok
Ok
No
No
