LG AMNH076LQL0 Service Manual page 184

Troubleshooting Guide
7) Troubleshooting CH23
Display
Title
code
DC Link Low voltage
23
Check Point
1. Check the Tab1 connection condition. (Refer to outdoor wiring diagram)
2. Check the CN_COIL(IN), CN_COIL(OUT) connection condition.
3. Check the DC Link voltage at not operating(260V )
4. Check the DC Link voltage at Comp operating(500V )
190 Multi type Air Conditioner
Cause of error
• DC Link volt is below
300V
Check point & Normal condition
• Check point & Normal condition
• Check the TAB1 is connect.
• At not operating : DC Link voltage(260V )
• At Comp operating : DC Link voltage(500V )