LG LV-B1864HL - Operation Limit; Cooling Operation Limits; Heating Operation Limits; Power Source and Starting Voltage Limits

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Possible Trouble 5
: Ineffective Heating
Possible Trouble 6
: The unit does not operate by forced operation switch.
YES
YES
NO
Is 4way-valve operated?
Check the RY-4WAY
and 4way-valve
Exchange IC02M
NO
Check RY-4WAY
NO
YES
Is the F/OP key
any problem?
Check P.C.B pattern check
Exchange F/OP key
Is IC02M operated
normally?