LG LTN16385PL Service Manual page 22

7-1-8 TEST MODE
1. Test mode allows the PCB and check the function of the product, finding the defective part in case of an error.
2. The test button on the main PCB of the refrigerator (Test S/W). Test mode will end in 2 hours in the test mode 1 and 5
minutes in the test mode 2 and then restarts.
3. While developing the test mode, the button on the control function will not be recognized using the tone (beep).
4. After exit test mode, be sure to unplug the refrigerator.
5. If an error such as a sensor failure is detected while in test mode, the error code displayed on the screen.
6. While the error is displayed, the test mode will not be activated until the test button is pressed.
Mode Action
Test 1 Push the test button.
Test 2 Push the test button
one more time while it
is in test mode 1.
Readjustment Push test button one
more time while it is in
test mode 2.
* LED test mode: when the refrigerator temperature button and the button of "super cool" are pressed together for 1 sec or
more, each LED in the display will light up simultaneously. When the buttons are released, the previous Try out mode will be
restored.
Contents
1. Continuous operation of
compressor.
2. Continuous operation of
freezer fan.
3. Defrost heater off (OFF).
4. All LED display on (ON) .
1. Compressor Off (OFF)
2. Freezer fan off (OFF).
3. Freezer heater on (ON)
4. LED 1,3 & 5 on (ON), and
show "2" in the temperature
indicatior.
Readjustment to the original
conditions
<TEST MODE 1 STATUS LED>
<TEST MODE 2 STATUS LED>
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Observations
Readjustment if the temperature of
defrost sensor is 13oC or more.
The compressor will start working
after 7 minutes.