1
0
.3.9 Overheat Protection For Discharge Temperature
Outdoor display: LED1 flash 8 times
Method of The Discharge temperature control is checked with the temperature being detected
Malfunction by the Discharge pipe thermistor
Detection
Malfunction when the compressor discharge temperature is above 110
℃
Decision
Conditions
Supposed
■
Electronic expansion valve defective
Causes
■
Faulty thermistor
■
Faulty PCB
Troubleshooting * 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
℃
shortly 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.
Malfunctions occur after running for some time even
though the measured temperature is below 110
℃
. 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
replaced
YES
NO
NO
YES
Seivice diagnosis
Domestic air conditioner
42
Содержание 1U53RA1ERA
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