Service Manual 37
Electronic Parts Troubleshooting Guide
3. When cooling does not operate
Turn on Main Power
Operate "Cooling Mode(
)" by setting the desired temperature of the
remote controller is less than one of the indoor temperature by 1°C at least.
When in Air Circulation Mode, Compressor/Outdoor Fan is stopped.
Check the sensor for indoor temperature is attached as close as to be
effected by the temperature of Heat Exchanger(EVA).
When the sensor circuit for indoor temperature and connector are in bad
connection or are not engaged, Compressor/Outdoor Fan is stopped.
• Check the related circuit of R02H(12.1K), R01H(1.0K), R04H(6.2K),
R03H(1.0K) (Indoor unit).
• Check the indoor temperature sensor is disconnected or not(About 10k
Ω
/ at 25°C).
Check if connection line (Indoor/Outdoor) is complied with Wiring Diagram.
Check Outdoor Unit
(PCB Ass'y)
Correct connection line
Good connection
Bad connection
