Troubleshooting ch03, Check point – LG LCN240CP User Manual
Page 40
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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
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