Haier HSU-18HEA03/R2(DB)-I User Manual

66
Domestic air conditioner
HSU-18HEA03/R2(DB)-I
Service Diagnosis
7.3.7 Overheat Protection For Exhaust Temperature
outdoor display LED1 flash 8 times
Method of
the exhaust temperature control is checked with the temperature being detected
Malfunction by the exhaust pipe thermistor
Detection
Malfunction
when the compressor discharge temperature is above 117ć
Decision
Conditions
Supposed
Ƶ Electronic expansion valve defective
Causes Ƶ Faulty thermistor
Ƶ Faulty PCB
Troubleshooting
* Caution Be sure to turn off power switch before connect or disconnect connector, or
else parts damage may be occurred.
YES
NO
the temperature
exceeds 117 shortly ć
after the machine
starts up?
1) The cryogen may have been leaked during
installation, or there may be leakage in the
piping system.
2) There may be other causes to make the
exhaust temperature too high.
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
Measure the temperature at the exhaust
temperature sensor of the compressor on the
outdoor uni
t
YES
Malfunctions occur after
running for some time? even
though the asured
temperature is below 117ć.
Exhaust temperature sensor is broken and
needs be replaced
NO

Haier HSU-18HEA03/R2(DB)-I Specifications

General

Brand	Haier
Model	HSU-18HEA03/R2(DB)-I
Category	Air Conditioner
Language	English