Haier 1U25BEEFRA Service Manual page 41

Wall mounted type dc inverter
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10.3.6 Over-current of the compressor
Outdoor Display:
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 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.
F2 LED1 flash 3 or 24 or 25 times
Faulty IPM Module
Faulty compressor
Faulty power supply
damage may be occurred.
NO
NO
NO
YES
IPM Module is damaged and
needs replacing.
Yes
Repair the power supply
Domestic air conditioner
39
Service diagnosis

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