LG GR-K192AF Service Manual - Page 15

Test function

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MICOM function and circuit description 5-1-11. Test function 1. The test function checks the functions of the PCB and the refrigerator, searching for errors in parts. 2. The test switch on the PCB operates the test mode. The refrigerator reverts to the normal mode after 2 hours if you forget to end it manually. 3. When the test mode is active, the buttons on the control panel are disabled but the buzzer still sounds a ding if one is pressed. 4. When the test mode is completed, unplug the refrigerator briefly and plug it in again to reset it and allow normal operation. 5. If a sensor failure or other failure is detected during the test mode, release the test mode to display the failure code. 6. During the display of the error code, test mode does not work even if you press the Test switch. Mode Operation TEST1 Press the test switch once COMP fan motor VALVE ON Left compartment 20minute / Right compartment 20 minute Left and Right seasoning heater OFF DIAPLAY LED Error code display "11" Remarks This test checks the refrigeration system for the left and right compartments. TEST2 Press the test switch once when Test 1 indicates it is completed. ON Right compartment valve OPEN OFF Error code display "22" This test checks the refrigeration system for the right compartment only. TEST3 Press the test switch once when Test 2 indicates it is completed. ON Left compartment valve OPEN OFF Error code display "33" This test checks the refrigeration system for the left compartment only. TEST4 Press the test switch once when Test 3 indicates it is completed. OFF ON Error code display "44" This test checks the seasoning heaters. Normal Press the test recovery switch once when Test 4 indicates it is completed. After a maximum of 30 minutes or when the temperature of the compartments is higher than 40C , the storage will default to its initial status. The compressor operates after a delay of 7 minutes. LED CHECK function All LEDs are turned ON by pressing and holding "Kimchi store" button on the left chamber and "Kimchi store" button on the right chamber together for one second or longer. When these buttons are released, the LED returns to the previous state. - 15 -

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5-1-11. Test function
1. The test function checks the functions of the PCB and the refrigerator, searching for errors in parts.
2. The test switch on the PCB operates the test mode. The refrigerator reverts to the normal mode after 2 hours if you forget
to end it manually.
3. When the test mode is active, the buttons on the control panel are disabled but the buzzer still sounds a ding if one is pressed.
4. When the test mode is completed, unplug the refrigerator briefly and plug it in again to reset it and allow normal
operation.
5. If a sensor failure or other failure is detected during the test mode, release the test mode to display the failure code.
6. During the display of the error code, test mode does not work even if you press the Test switch.
LED CHECK function
All LEDs are turned ON by pressing and holding “Kimchi store” button on the left chamber and “Kimchi store” button on the
right chamber together for one second or longer. When these buttons are released, the LED returns to the previous state.
MICOM function and circuit description
- 15 -
Mode
Operation
COMP fan motor
VALVE
Left and Right
DIAPLAY LED
Remarks
seasoning heater
TEST1
TEST2
TEST3
TEST4
Normal
recovery
Press the test
switch once
Press the test
switch once when
Test 1 indicates it
is completed.
Press the test
switch once when
Test 2 indicates it
is completed.
Press the test
switch once when
Test 3 indicates it
is completed.
Press the test
switch once when
Test 4 indicates it
is completed.
Left compartment
20minute / Right
compartment 20
minute
Right
compartment
valve OPEN
Left compartment
valve OPEN
OFF
OFF
OFF
ON
Error code
display “11”
Error code
display “22”
Error code
display “33”
Error code
display “44”
ON
ON
ON
OFF
This test checks
the refrigeration
system for the left
and right
compartments.
This test checks
the refrigeration
system for the right
compartment only.
This test checks
the refrigeration
system for the left
compartment only.
This test checks
the seasoning
heaters.
After a maximum of 30 minutes or when the temperature of the compartments is higher
than 40C
, the storage will default to its initial status.
The compressor operates after a delay of 7 minutes.