LG LTCS20020 Series Service Manual page 28

8-1-4 CONTROL OF FAN IN THE FREEZER COMPARTMENT
1. When the freezer or refrigerator door is opened, the Freezer Fan ON, but if door not close within 1 min. then freezer fan turn off.
2.- Freezer fan is turn on when compressor is operating or TEST MODE 1 is activate.
3.- Freezer fan not working when defrosting is operating or TEST MODE 2 is activate.
8-1-5 ALARM FOR OPEN DOOR
1. This feature is to alarm by the buzzer when the door of the freezer or the refrigerator is not closed in 1 minute after it is opened.
2. In 1 minute after the door is opened, the buzzer sounds three times at the interval of 0.5 second. After that, every 30 seconds, the
buzzer sounds three times with 0.5 sec ON/OFF.
3. The alarming is cancelled when the door of the freezer or the refrigerator is closed while the buzzer sounds.
(EX.)
FREEZER DOOR
REFRIGERATOR
DOOR
BUZZER
8-1-6 BUZZER SOUND
1. When the button on the front Display is pushed, "Ding-" sound is produced and it works as follows.
8-1-7 DEFROSTING
1. Defrosting starts each time the compressor running time reaches between 7~50 hours and 50 hours according to door open time.
2. For initial power on or for restoring power, defrosting starts when the compressor running time reaches 4 hours.
3. Defrosting stops if the sensor temperature reaches 10°C or more. If the sensor doesn't reach 10°C in 2 hours, the defrost mode is
malfunctioning.
4. Defrosting won't function if its sensor is defective (wires are cut or short circuited)
8-1-8 SEQUENTIAL OPERATION OF ELECTRIC COMPONENTS
The electric components, such as the comp, defrosting heater, and cooling fan, start sequentially to avoid the noise and
damage to the part, which may result from the simultaneous start of various components on turning the power on or after
the completion of a test.
OPERATING
Temperature of defrost Temperature of defrost
sensor is 113°F (45°C) sensor is 113°F (45°C)
or more . or
Temperature of defrost Temperature of defrost
sensor is lower than sensor is lower than
113°F (45°C . 113°F (45°C)
CLOSE OPEN CLOSE
within
1 minute
ORDER
0.5 0.5
POWER POWER
Sec
ON ON
0.5 0.5
Def- Def-
POWER POWER
Sec Sec
Heater Heater
ON ON
ON ON
COMP, COMP,
10 Sec
F-FAN F-FAN
ON ON
OPEN
three three three
times times times
1 minute 30 30
seconds seconds
COMP, COMP,
F-FAN F-FAN
ON ON
Def- Def-
Heater Heater
5 Sec
OFF OFF
28
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Only training and service purposes.
CLOSE
three
times
REMARKS