Haier N-Series, Service Manual

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Seivice diagnosis
Domestic air conditioner
11.4.6 Over-current of the compressor
Electrify the machine again and turn it on
with the remote controller, If malfunctions
are reported before or upon the compressor
being started up,
IPM Module is damaged and
needs replacing.
Repair the power supply
the system may have been over or under charged
with gas, which can be judged through the
pressure of the measuring system.
YES
NO
Yes
NO
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
NO
Method of
malfunction detection
Malfunction detection
conditions
Troubleshooting
he 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
Supposed causes
LED1 flash 3 or 24 or 25 times
Outdoor diplay
Ŷ
Faulty IPM Module
Ŷ
Faulty compressor
Ŷ
Faulty power supply
* Caution
Be sure to turn off power switch before connect or disconnect connector, or parts
damage may be occurred..
.
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