Overheat Protection For Exhaust Temperature - Haier HSU09VHJ Service Manual

7. .6 Overheat Protection For Exhaust Temperature

the exhaust temperature control is checked with the temperature being detected
by the exhaust pipe thermistor
when the compressor discharge temperature is above 117
Electrify the machine again and turn it on with
the remote controller, then measure the
temperature at the exhaust temperature sensor
of the compressor on the outdoor unit
the temperature
exceeds 110
after the machine
Measure the temperature at the exhaust temperature
sensor of the compressor on the outdoor unit
Malfunctions occur after running
for some time? even though the
asured temperature is below
117
.
HSU09VHJ DB -SM
LED1 flash 8 times
Electronic expansion valve defective
Faulty thermistor
Faulty PCB
Be sure to turn off power switch before connect or disconnect connector,
else parts damage may be occurred.
shortly
NO
NO
1) The cryogen may have been leaked during
installation, or there may be leakage in the
YES
piping system.
2) There may be other causes to make the
exhaust temperature too high.
YES
57
Service Diagnosis
Exhaust temperature
sensor is broken and
needs be replaced
Domestic Air Conditioner
or