LG LRTN19320, Service Manual

Page: 22 / 40

OPERATING ORDERS
Temperature of Defrost
Sensor is 113°F(45°C) or
more (when unit is newly
purchased or when moved)
Temperature of defrost
sensor is lower than
113°F(45°C) (when power
cuts, SERVICE)
Reset to normal operation
from TEST MODE
8-1-5 Alarm for Open Door
1. This feature sounds a buzzer when the freezer or refrigerator door is not closed within 1 minute after it is opened.
2. One minute after the door is opened, the buzzer sounds three times each for 0.5 seconds. These tones repeat every 30
seconds.
3. The alarm is cancelled when the freezer or the refrigerator is closed while the buzzer sounds.
8-1-6 Buzzer Sound
When the button on the front Display is pushed, a "Ding~" sound is produced.
8-1-7 Defrost Cycle
1. A defrost cycle will be initiated after 4 hours of accumulated compressor run time after the initial power up or a power
failure.
2. After the initial defrost, the defrost cycle is initiated after 7 hour of accumulated compressor run time.
3. The defrost cycle will be terminated once the defrost sensor reaches 50°F(10°C).
8-1-8 Electrical Parts Operates in Orders
Electrical parts such as COMP, defrost heater, freezer FAN, etc. operate in the following order to prevent noise and parts
damage. Several parts are started at the same time at initial power on and are turned off together when TEST is
completed.
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Closed Open Closed Open
3 Times 3 Times 3 Times 3 Times
Closed
Within 1 min. 1 min.
30 sec 30 sec 30 sec
Freezer Door
or Refrigerator
Door
Buzzer
in 1/2 second
Freezer FAN
ON
in 1/2 second
Freezer FAN
ON
Freezer FAN
ON
in 1/2 second
Initial power on
POWER
ON
in 1/2 second
Total load
OFF
COMP
ON
in 7 minute
COMP
ON
POWER
ON
COMP
ON
Defrost
heater ON
Defrost
heater OFF
in 1/2 second
in 1/2 second
in 10 second