LG LB-H1860HL Service Manual page 45

Possible Trouble 2
Is it the HOT
START mode?
NO
Is IC01M operated
normally?
YES
Is the each Relay
any problem?
NO
Check the fan motor
and connector.(CN-MOTOR)
Possible Trouble 3
Is it Heating Mode?
YES
Does the temperature
set all right?
YES
Is IC01M operated
normally?
YES
Is 4way-valve operated?
YES
Check the connector.
(CN-OUT)
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Only for training and service purposes
: The indoor fan does not operate.
YES
NO
YES
: Ineffective Heating
NO
NO
NO
NO
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It is normal operation.
Exchange IC01M.
Exchange Relay.
Adjust operation mode.
Adjust set temperature.
Change IC01M.
Check RY-4Way.
LGE Internal Use Only