LG FM21AH UE3 - Page 79

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5. Trouble Shooting
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.
Display
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 )