LG LB-E608HL - Heating Ineffectiveness Diagnosis; Heating Performance Troubleshooting

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Possible Trouble 4
: Ineffective Heating
YES
YES
NO
YES
Is it Heating Mode?
Does the temperature
set all right?
Change IC01M.
NO
NO
Adjust operation mode.
Adjust set temperature
Is IC01M operated
normally?
YES
Check the connector
(CN-OUT, CN-AC1.2)
Check RY-4Way
NO
Is 4way-valve operated?