LG LFC23760 Series, Service Manual

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8-1-10 TEST Mode
1. The Test mode allows checking the PCB and the function of the product as well as finding out the defective part in case of
an error.
2. The test mode is operated by pressing two buttons at Display panel.
3. While in the test mode, the function control button is not recognized, but the recognition tone (beep~) sounds.
4. After exiting the test mode, be sure to reset by unplugging and then 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.
NOTE : LED CHECK MODE: When the refrigerator temperature control and the freezer temperature control button at the
same time are hold for 1 second or longer, every LED on the display turns on at the same time. when the button are
relesed, the previous mode is restored.
* Freezer Fan RPM Variable Check:
In case the freezer fan is in operation when the ADJUST key in Refrigerator and Freezer Temp. Control are pressed for
more than one second at the same time freezer fan RPM changes. (for example if high speed, to normal speed or if
normal speed, to high speed for 30 seconds)
After 30 seconds, it turns to its original RPM.
* Demonstration MODE:
1. When the ICE PLUS key and ADJUST key of refrigerator temperature control are pressed for more than 3 seconds at the
same time temperature’s it converts to demostration mode. .
2. In this status, each LED is rotated with 1 second interval.
3. In this status, all Loads are off (Compressor / Fan / Damper / Heater)
(Even is Demonstration Mode, the refrigerator Lamp automatic off function works normally and can be demostrated)
4. It reset if you do again as clause.
MODE MANIPULATION CONTENTS REMARKS
TEST1
TEST2
Reset
Push ICE PLUS
key and ADJUST key of
Freezer Temperature at the
same time over 3
seconds.
Push ICE PLUS
key and ADJUST key of
Freezer Temperature at the
same time over 3 seconds
in TEST MODE 1
Push ICE PLUS
key and ADJUST key of
Freezer Temp. at the same
time over 3 seconds. in
TEST MODE 2
1. Continuous operation of the
COMPRESSOR
2. Continuous operation of the freezer fan
3. STEPPING DAMPER OPEN
4. Defrosting Heater OFF
5. Every DISPLAY LED ON
1. COMP OFF
2. Freezer FAN OFF
3. STEPPING DAMPER CL OSE
4. Defrosting heater ON
5. DISPLAY LED 1, 3, 5, 7 ON
Reset to the previously setting before
TEST MODE
Reset if the
temperature of the
Defrosting sensor is
46°F (8°C) or more.
The compressor will
Start after a 7-minute
delay.