Haier N Series Service Manual page 43

10.4.6 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
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.
Faulty IPM Module
Faulty compressor
Faulty power supply
parts damage may be occurred.
NO
NO
NO
YES
Yes
41
Service diagnosis
IPM Module is damaged and
needs replacing.
Repair the power supply
Domestic air conditioner