LG General Wall Mounted-Inverter Type - Manual (Page 60)

60 Room Air Conditioner
Part 4 Trouble Shooting
5) Troubleshooting CH23, CH28
V
23
28
DC Link
Low voltage.
DC Link
High voltage
• DC link volt. is
140VDC .
• DC link volt. is
420VDC .
• Check the power source.
• Check the components.
• Check the power source.
• Check the components.
Error
code
Title Cause of error Check point & Normal condition
Check Point
1. Check the power source.
2. Check the components
(B/Diode, Reactor, PSC Parts )