Service diagnosis
7.4.13
High work-intense protection
Domestic air conditioner
Method of
malfunction
detection
Malfunction
detection
conditions
Supposed
causes
Troubleshooting
'
Be sure to turn off power switch before connect or disconnect connector, or
else
parts damage may be caused
High work-intense control is activated in the heating mode if the temperature
being sensed by the heat exchanger thermistor exceeds the limit.
Outdoor display˖ LED1 flash 6 times
Activated when the temperature being sensed by the heat exchanger exceeds
65ć twice in 30 minutes.
■ Faulty electronic expansion valve˗
■ Dirty heat exchanger˗
■ Faulty heat-exchange sensor˗
■ Insufficient gas
Electrify the machine again and turn it
on with the remote controller, check
whether the wind temperature is below
65 (EEPROM)ć
The malfunction is reported
after the machine has run for
some time?
1ǃ Check whether room temperature
and pipe temperature sensor is in
good condition .
2ǃ the temperature monitoring circuit
YES
NO
The indoor unit blows poorly
due to blocked filters or poor
condition of the fan?
YES
1ǃ Clean the filters
2ǃ Replace the fan motor
NO
Use piezometer to measure the
pressure of system
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