LG TM-1830C2L Svc Manual page 46

3. When cooling does not operate
Operate "Cooling Mode(
controller is less than one of the indoor temperature by 1°C(1.8°F) 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 10kΩ / at 25°C[77°F]).
Check if connection line (Indoor/Outdoor) is complied with Wiring Diagram.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Turn on Main Power
)" by setting the desired temperature of the remote
Good connection
Check Outdoor Unit
(PCB Ass'y)
Bad connection
Correct connection line
- 46 -
LGE Internal Use Only