Haier D-Series Service Manual page 46

10.4.6 Over-current of the compressor
Outdoor Display
Method of
Malfunction Detection
Malfunction
Detection Conditions
Supposed Causes
Troubleshooting
Electrify the machine again and turn it on
with the remote controller, If malfunctions
are 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 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.
LED1 flash 3 or 24 or 25 times
The current of the compressor is too high
when the IPM Module is damaged or the compressor is damaged.
power supply voltage is too low or too high
■ Faulty IPM Module
■ Faulty compresso
■ Faulty power supply
* Caution Be sure to turn off power switch before connect or disconnect connector, or
NO
NO
NO
parts damage may be occurred.
YES
IPM Module is damaged and
needs replacing.
Yes
Repair the power supply
44
Seivice diagnosis
Domestic air conditioner