LG LSC 27950SB, Service Manual

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2-8. Control of variable type freezing fan
1. To increase cooling speed and response to load, the MICOM will vary the speed of the freezer fan between low and high.
2. The MICOM runs the fan at high speed only at power-up and for ICE PLUS or JET FREEZING cycles, and runs at low
speed for all other settings.
3. If you open the freezer door, the refrigerator door, or the home bar door, and the freezer fan was running at high speed, it
will reduce to low speed. If it was running at low speed when a door was opened, it will turn off.
4. If the MICOM determines the BLDC fan motor is locked up, (no signal for 115 seconds) it will show a failure code on the
display and cut power to the fan. To power the fan again, unplug the refrigerator for a few seconds and plug it in again.
2-9. Control of cooling fan motor
1. The cooling fan motor performs ON/OFF control by linking with the COMPRESSOR.
2. It controls at the single RPM without varying RPM.
3. Failure sensing method is same as in fan motor of freezing fan motor (refer to failure diagnosis function table for failure
display).
2-10. Door opening alarm
1. The buzzer sounds when any door is held open for more than one minute.
2. After any door has been open for one minute, the buzzer sounds three times for second each, then it sounds three
times for second each every thirty seconds until the door is closed.
3. When all open doors have been closed, the buzzer stops.
2-11. Ringing of button selection buzzer
1. If pressing the front display button, Ding ~ sound rings.
MICOM FUNCTION
- 18 -
Doors of freezer,
refrigerator, or
home bar.
BUZZER
Closing Opening
Less than
one minute
One minute 30
seconds
30
seconds
30
seconds
Opening Closing Closing
3 Times 3 Times 3 Times 3 Times