LG LCN240CP Service Manual page 34

Troubleshooting Guide
Product doesn't operate with the remote controller.
Trouble 2
While the compressor has been stopped, the compressor does not operate
(When operated in the Sleeping Mode, the wind speed is set to the low speed as force.)
Caused by the remote controller.
When the mark (
screen, replace battery.
When the detect switch (double key) inside the
remote controller door is fault, it is impossible to
operate temperature regulating(L / M) and wind
speed selecting.
Check the Display PWB Ass'y
34 Ceiling Cassette Air Conditioner
Turn on main power.
owing to the delaying function for 3 minutes after stopped.
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.
) is displayed in LCD
Caused by other parts except
the remote controller
Check the contact of CN-DISP 1 connector
Check DISP PWB Ass'y
-Voltage between CN1 ➀ - ➆ : DC +5V
• Check receiver ass'y