LG L2-C242GL0, Service Manual

Page: 40 / 75

40 Multi Air Conditioner
Electronic Parts Troubleshooting Guide
Turn on Main Power
While the compressor has been stopped, the compressor does not
operate owing to the delaying function for 3 minutes after stopped.
Caused by other parts except the remote control
Cause by the remote control
When the mark( ) is displayed in LCD screen, replace
battery.
Check the contact of CN-DISPI connector.
When the compressor stopped Indoor Fan is driven by a low speed.
At this point the wind speed is not controlled by the remote controller.
(When operated in the Sleeping Mode, the wind speed is set to the
low speed by force.)
Check DISP PWB Ass'y
- Voltage between CN DISP1
①
-
⑦
: DC +5V
When the detect switch(double key) inside the remote
controller door is fault, it is impossible to operate
temperature regulating(
▲ / ▼ ) and wind speed selecting.
Check the connecting circuit between the remote con-
troller MICOM (No. ) - R17(2
Ω
) - IR LED - Q1 -
R16(2.2K
Ω
).
Check point
• Check the connecting circuit between PIN ② -
R01L(1K) - C01L(680PF) - MICOM PIN
• Check Receiver Ass'y
2. The product is not operate with the remote controller.