Haier HSU12VHG-B Service Manual page 66

7.3.11 Over-current of the compressor
Outdoor Display LED1 flash 3
LED1 flash 24
LED1 flash 25
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
Electrify the machine again and turn it on
with the remote controller, If malfunctions
are reported
compressor being started up
The compressor is started normally,
but malfunctions are reported after it
has run for some time. Check the
power supply is too low or too high
The system may have been over or under
charged with gas, which can be judged through
the pressure of the measuring system.
HSU129HG(DB)-SM
Indoor Display F22
Indoor Display F2
Indoor Display F23
Faulty IPM Module
Faulty compressor
Faulty power supply
parts damage may be occurred.
before or upon
NO
NO
YES
the
YES
63
Service Diagnosis
IPM Module is damaged and
needs replacing.
Repair the power supply
Domestic Air Conditioner