5. Trouble Shooting
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Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Check Point
1. Check the WCN_P(L),P(N) Connection condition at the Main PCB.(Refer to outdoor wiring diagram)
2. Check the DC Link voltage at not operating(280V )
3. Check the DC Link voltage at Comp operating(340V )
4. Check DC Link Sensing Signal :2.4~2.8V (Refer the Picture)
Vdc
< Main PCB>
<DC Link Voltage Check Point>
<DC_LINK Sensing Check P
oint>
< Input Power Source Check Point >
27/30/40k
Vdc
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