Haier AW07LC2VHA Technical Overview page 108

Within 3 minutes after the unit is supplied with
power and turned on with the remote control,
check to see if the compressor starts up.
YES
The compressor attempts
to start and then stops. The
LED1 on the outdoor PCB
blinks 18/19 times
PAGE 108
FLOW CHARTS
LED1 flashes 18 times
LED1 flashes 19 times
When the wiring of the compressor is wrong or the connection is poor or the
compressor is damaged
Caution: Be sure to turn power switch off before connecting or disconnecting the
connector, or parts may sustain damage.
REFERENCES
The wiring of the compressor is incorrect
NO or the connection is poor
Check the compressor windings, if they are
YES
OK, it is an IPM module issue
Replace the IPM Module