LG Electronics LCN240CP Air Conditioner User Manual


 
40 Ceiling Cassette Air Conditioner
Troubleshooting Guide
Troubleshooting CH03
Check the Volt.
Indoor Unit
V
12Vdc
12V S GND
Check the Volt.
Wired R/C
V
12Vdc
12V S GND
03
Communication
Wired R/C
Open / Short
Wrong connection
Connection of wire
Main PCB Volt. DC12V
Noise interference
Display
code
Title Cause of error Check point & Normal condition
Check Point
1. Check the wire connection. (Open / Short) Repair the connection
2. Check the soldering state of connector. (Soldered poorly) Repair or Change the PCB.
3. Check the volt. Of main PCB power source. (DC 12V, DC 5V) Repair or Change the main PCB.
4. Check the installation of wired remote controller. (Noise interference) Adjust the state of installation