Haier AS09/12GS2ERA Service Manual page 69

Conditions power supply. voltage is too low or too high
Supposed
Causes Faulty compressor
Faulty power supply
Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or
Electrify the machine again and
turn
controller,If
reported before or upon the
compressor being started up,
The compressor is started normally,
but malfunctions are reported after it
has run for some time. Check the
power supply. If the voltage is too low
or too high
AS09/12GS2ERA 1U09/12BS1ERA-SM
Faulty IPM Module
parts damage may be occurred.
it on with the remote
malfunctions are
No
Yes
Yes
Repair the power supply
66
Servive Diagnosis
IPM Module is damaged
and needs replacing.
Domestic air conditioner