TROUBLESHOOTING
1-29
“RUN” light flickers and “ALARM” is indicated on the remote control switch.
The unit No., alarm code and the unit code is alternately indicated on the set temperature section,
and the alarm code is indicated on the display of the outdoor unit PCB.
This alarm is indicated when the following conditions occurs three times within one hour;
(1) The temperature of the thermistor on the top of the compressor is maintained higher than 127°C
for 10 minutes, or the temperature of the thermistor on the top of the compressor is maintained
higher than 140°C for 5 seconds during cooling.
(2) The temperature of the thermistor on the top of the compressor is maintained higher than 120°C
for 10 minutes, or the temperature of the thermistor on the top of the compressor is maintained
higher than 140°C for 5 seconds during heating.
Alarm
Code
Excessively High Discharge Gas Temperature
at the Top of Compressor Chamber
Is the thermistor on top
of compressor good?
Yes
Faulty Thermistor
See page 1-35 for the
thermistor resistance.
No
Is the thermistor
installed correctly
on the compressor?
Install it correctly.
No
Yes
No
Yes
Is gas leaking? Repair leaks of gas.
Recharge refrigerant.
Thermistor on Top
of Compressor
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