Haier AW07LC2VHA Technical Overview page 99

Turn off the power supply and rotate
the fan by hand
Does fan rotate smoothly?
YES
Turn power on and operate fan
Does it run?
YES
Is the feedback command pulse
generated?
YES
Replace indoor fan motor PCB
Replace fan motor
FLOW CHARTS
NO
NO
Check output of fan motor connector
Is motor power voltage DC310V
Is motor control power DC15V
NO
Is feedback command voltage
1-6VDC generated?
REFERENCES
Replace fan motor
YES
generated?
YES
generated?
YES
Replace indoor unit PCB
YES
Replace indoor unit PCB
NO
Replace indoor unit PCB
NO
NO
Replace fan motor
PAGE 99