HSU12HG(DB)-SM Service Diagnosis
63
Domestic Air Conditioner
7.3.11 Over-current of the compressor
Outdoor Display
LED1 flash 3
Indoor Display
F22
LED1 flash 24
Indoor Display
F2
LED1 flash 25
Indoor Display
F23
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
Faulty IPM Module
Causes
Faulty compressor
Faulty power supply
Troubleshooting
* Caution
Be sure to turn off power switch before connect or disconnect connector, or
parts damage may be occurred.
YES
NO
YES
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.
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