LG LTCS20220W Service Manual page 26

8-1-5 TEST MODE
1. Test mode allows checking the PCB and the function of the product as well as determining the Defective part in case of an error.
2. The test button is on the main PCB of the refrigerator (Test S/W).
3 While in the test mode, the "Temperature Adjust" button will not operate.
4. After exiting the test mode, be sure to reset by unplugging and plugging in the appliance
5. If an error, such as a sensor failure is detected while in the test mode, the test mode is cleared and the error code is displayed
6. While an error code is displayed, the test mode will not be activated.
MODE
TEST1 Pushed 1 Time
<Pull Down Mode>
Pushed again after
TEST2
<Defrosting Mode>
Return
To normal Pushed again after
condition
Demonstration MODE (OFF)
1. Press the Temperature Adjust button untill the OFF LED turns ON to activate this mode (After selecting the
Demonstration Mode it takes 10 seconds to be enable).
2. In this Status all loads are OFF (compressor, fans, heaters) only LED lamp will be in normal function.
3. To exit of the Demonstration Mode press the Temperature Adjust button and set the desired temperature
level. The device will reset after 10 seconds and the display will blink one time
Note: If door is opened within the first 5 minutes from power on the demonstration mode, it will be released and set at middle
level automatically.
Key Control
Test Button
Test Button
Test Mode 1
Test Button
Return to normal state (Compressor will delay 7 minutes
to power ON
Test Mode2
Operation
1) Comp, FFAN and CFAN.
2) Defrosting heater OFF
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3) All Display ON
1) Comp, FFAN and CFAN.
2) Defrosting heater ON
3) Display LED → as belows
- 26 -
Remarks
* The maximum time for TEST1
is 5 min
Operate max 1Hr