LG TB-H488RSS5 Service Manual page 37

Possible Trouble 2
Is it in the HOT
START mode?
NO
Is IC01M operated
normally?
YES
Does Relay
malfunctions.
NO
Check the fan motor
and connector.(CN-MOTOR)
Possible Trouble 3
Is it in Heating Mode?
YES
Is the set temperature
all right?
YES
Is IC01M operated
normally?
YES
Is 4way-valve operated?
YES
Check the connector.
(CN-OUT)
: The indoor fan does not operate.
YES
NO
YES
: Ineffective Heating
NO
NO
NO
NO
–37–
It is normal operation.
Exchange IC01M.
Exchange Relay.
Adjust operation mode.
Adjust set temperature.
Change IC01M.
Check RY-4Way.