LG THERMA V AHNW16606B0 Service Manual page 49

Check Point
1. Check the WCN_P(L),P(N) Connection condition at the main PCB(Heater). (Refer to 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(AHUW**6A2): 2.4~2.8V (Refer the Picture)
5. Check DC Link Sensing Signal(AHUW**8A2): 0.4~0.6V (Refer the Picture)
* AHUW096A3
IN/I
GND
Black
Red
Vdc
<CT Sensing Check Point>
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