LG LRSPC2031BS Service Manual page 29

MICOM FUNCTION
Note 1) When open air temperature detecting sensor, refrigerator sensor 2, ice maker unit, ice making sensor are
abnormal, it is not indicated in the trouble code. But it is indicated while checking LED (press freezer and
refrigerator temperature control buttons for more than 1 second at the same time).
Room Temperature
Detection Sensor
Refrigerator Sensor 2
(lower shelf)
Home Bar Sensor
Ice Maker Unit
Note 2) When refrigerator sensor is abnormal, it opens for 10 minutes and closes for 15 minutes.
2-9. Test Function
1. Test function is to check the function of PWB and products and to find defective parts when the refrigerator is out of order.
2. Test button is on the main PWB of the refrigerator. Test mode completes after 2 hours in maximum and returns to normal
conditions.
3. Function control button does not work but button recognition sound is heard during the test mode.
4. When test mode is completed, unplug and replug the power cord to return to the normal conditions.
5. When sensor is abnormal in the test mode, test mode is released and trouble code is indicated.
6. Test mode does not work even test button is pressed when trouble code indicator is on.
Mode
Test 1 Press test button once
Test 2 Press test button once in
Test Mode 1
Test 3 Press test button once in
Test Mode 2
Normal Press test button onec in
test mode 3
Normal :
Abnormal :
Normal :
Abnormal :
Normal :
Abnormal :
Normal :
Abnormal :
Operation
1. Continuous compressor operation
2. Continuous freezer fan (high rpm) operation
3. Defrost heater off.
4. All display LEDs are on.
5. Electronic stepping motor damper open
1. Compressor off.
2. Freezer fan (high rpm) off.
3. Freezer fan (standard rpm) on.
4. Defrost heater off.
5. "Medium Weak" led in freezer and
6. Step motor damper open condition
1. Compressor is off.
2. Freezer fan off.
3. Defrost heater on.
4. "Medium" leds in freezer and refrigerator
5. Step motor damper closed condition
Return to initial conditions
A
LED On.
A
LED Off.
B LED On.
B LED Off.
LED On.
C
C
LED Off.
LED On.
D
D
LED Off.
Contents
(baffle is open).
refrigerator temperature indicators are on.
(baffle is open)
temperature indicators are on.
(baffle is open)
- 29 -
The rest of
LEDs are all on
Remarks
Forced start
Check fan in the freezer
compartment
• Return to normal
conditions when defrost
sensor is above 5 °C.
• Forced defrost.
Compressor starts after
seven minutes.