Haier HSU-09RS03/R2(SDB) Service Manual page 68

7.4.12 Over-current of the compressor
Outdoor Display LED1 flash 3 or 24 or 25 times
Method of The current of the compressor is too high
Malfunction
Detection
Malfunction when the IPM Module is damaged
Decision or the compressor is damaged
Conditions power supply. voltage is too low or too high
Supposed
Causes
Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or parts
Electrify the machine again and
turn
controller,
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
HSU-09/12RS03/R2(SDB)
Faulty IPM Module
Faulty compressor
Faulty power supply
damage may be occurred.
it on with the remote
If malfunctions
No
are
Yes
65
Service Diagnosis
Yes
IPM Module is damaged
and needs replacing.
Repair the power supply
Domestic air conditioner