LG GR-459GTCA, Service Manual

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7) REFRIGERATOR LAMP AUTO OFF
(1) To protect the risk of lamp heat, when Refrigerator door opens for 7 min., refrigerator lamp is auto off.
8) DEFROSTING (REMOVING FROST)
(1) Defrosting starts each time the COMPRESSOR running time reaches 7 hours.
(2) For initial power on or for restoring power, defrosting starts when the compressor running time reaches 4hours.
(3) Defrosting stops if the sensor temperature reaches 10°C or more. If the sensor doesn’t reach 10°C in 2hours, the defrost
mode is malfunctioning. (Refer to the defect diagnosis function.)
(4) Defrosting won’t function if its sensor is defective(wires are cut or short circuited)
9) ELECTRICAL PARTS ARE TURNED ON SEQUENTIALLY
Electrical parts such as COMP. defrosting heater. freezer FAN. etc. are turned on in the following order to prevent noise and
parts damage. Several parts are started at the dame time at initial power on and are turned off together when TEST is
completed.
NOTE) (1) In the case of BEST/ BETTER model, dispenser heater is optional.
(2) Damper heater is only applied in the BEST model.
(3) Damper heater and Dispenser heater are not in the GOOD model.
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OPERATION STATE ORDER
Temperature of Defrosting
Sensor is 45°C or more
(when unit is newly
purchased or when moved)
Temperature of defrosting
sensor is lower than 45°C
(when power cuts, SERVICE)
Reset to normal operation from
TEST MODE
POWER
in 1/2 second
COMP
in 1/2 second
FREEZER FAN
ON ON ON
TOTAL LOAD
in 7 minute
COMP
in 1/2 second
FREEZER FAN
OFF ON ON
POWER
in 1/2 second
DEFROSTING
in 5 second
DEFROSTING
ON HEATER ON HEATER OFF
in 1/2 second
DAMPER
in 3 second
DAMPER
in 1/2 second
HEATER ON HEATER OFF
DISPENSER
in 3 second
DISPENSER
in 1/2 second
COMP
HEATER ON HEATER OFF ON
in 1/2 second
FREEZER
FAN ON
Initial power on