Service diagnosis
40
Domestic air conditioner
The Discharge temperature control is checked with the temperature being detected
by the Discharge pipe thermistor
when the compressor discharge temperature is above 110ć
Ŷ
Electronic expansion valve defective
Ŷ
Faulty thermistor
Ŷ
Faulty PCB
* Caution
Be sure to turn off power switch before connect or disconnect connector, or
else parts damage may be occurred.
Turn on the unit.
Test WHETHER the compressor running normal.
the temperature exceeds
110 ć shortly after the
machine starts u
?
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.
Malfunctions occur after running for some time even
though the measured temperature is below 110ć. Pull
out the exhaust sensor and measure its resistance at
standard temperatures according to the
resistance-temperature table
the results deviate
much?
The sensor is damaged. Replace the sensor
with a new one.
The outdoor mainboard is damaged and needs be
re
laced
YES
NO
NO
YES
Method of
Malfunction
Malfunction
Detection
Conditions
Troubleshooti
ng
Supposed
Causes
To Next Page
Loading...
Need help?
General
