LG GR-K20SVZ Technical Manual page 19

MICOM Function and Description of Circuit
10) Test Mode
1. The test function checks the functions of the PCB and the storage, searching for failure indications.
2. The test switch on the PCB operates the test mode. The storage 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 storage 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 failure code, Test Mode doesn't work even if you press the Test Switch.
Mode Operation
Press the test
TEST1
switch once.
Press the test
switch once when
TEST2
Test 1 indicates it
is completed.
Press the test
switch once when
TEST3
Test 2 indicates it
is completed.
Press the test
switch once when
TEST4
Test 3 indicates it
is completed.
Press the test
Normal
switch once when
returning
Test 4 indicates it
is completed.
Contents
1) Compressor ON.
2) 3-way valve opens to the left and right
compartments alternatively at 20-minute
intervals.
3) Left and right ripening heaters OFF.
4) Condensation heater OFF.
5) LED displays 111.
1) Compressor ON.
2) 3-Way Valve opens to the Right
Compartment.
3) Left and right ripening heaters OFF.
4) Condensation heater OFF.
5) LED displays 222.
1) Compressor ON.
2) 3-Way Valve opens to the Left
Compartment.
3) Left and right ripening heaters OFF.
4) Condensation heater OFF.
5) LED displays 333.
1) Compressor OFF.
2) Left and right ripening heaters ON.
3) Condensation heater ON.
4) LED displays 444.
Return to initial status.
20
Remarks
❊ This test checks the
refrigeration system for the
left and right compartments.
❊ The system reverts to initial
status after a maximum of 2
hours.
❊ This test checks the
refrigeration system for the
right compartment only.
❊ The system reverts to initial
status after a maximum of 2
hours.
❊ This test checks the
refrigeration system for the
left compartment only.
❊ The system reverts to initial
status after a maximum of 2
hours.
❊ This test checks the ripening
heaters and the condensation
heater.
❊ The system reverts to initial
status after a maximum of 30
minutes. When the
temperature of the
compartments is greater than
40°C, the storage defaults to
its initial status.
❊ The compressor operates
after a delay of 7 minutes.