LG LBNG3061YL - Unit and Fan Operation Issues

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Only for training and service purposes
LGE Internal Use Only
Electronic Parts Troubleshooting Guide
: The unit does not operate.
Possible Trouble 1
YES
NO
YES
Is the input voltage�
of CN-POWER AC230V?
Check the wiring diagram.
Exchange MICOM.
YES
NO
Check the main P.C.B�
pattern.
Is the voltage DC 5V �
between L02K and J09?
NO
Exchange Main PCB.
Is the voltage DC 12V �
between L02K and J14?
NO
NO
Is it the HOT�
START mode?
Is Q01C operated�
normally?
Check the fan motor�
and connector.(CN-MOTOR)
YES
Is the SSR any problem?
YES
NO
YES
It is normal operation.
Exchange Q01C.
Exchange Triac.
Possible Trouble 2
: The indoor fan does not operate.