LG LFC23760ST/03 Service Manual page 35

8-1-10 TEST Mode
1. The T est 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.
MODE MANIPULATION
Push ICE PLUS
key and ADJUST key of
Freezer T emperature at the
TEST1
same time over 3s.
Or Push TEST switch (on
the main Board) once.
<Cooling MODE>
Push ICE PLUS
key and ADJUST key of
Freezer T emperature at the
TEST2 same time over 3 seconds
in TEST MODE 1
Or Push TEST switch once
In TEST MODE 1.
<Forced desfrosting MODE>
Push ICE PLUS
key and ADJUST key of
Reset to
Freezer T emp. at the same
Normal
time over 3 seconds. in
TEST MODE 2
* Freezer Fan RPM Variable Check:
In case the freezer fan is in operation when the ADJUST key in Refrigerator and Freezer T emp. 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.
CONTENTS
1. Continuous operation of the compressor
and the freezer fan.
2. Stepping Damper OPEN
3. Defrosting Heater OFF
4 .Display LED all ON
1. Compressor and the freezer fan OFF
2. Stepping Damper CLOSE
3. Defrosting heater ON
4. Display LED 1, 3, 5, 7 ON
Reset to initial status (COMP 7 min delay)
- 33-
REMARKS
Maximum test time:
5 minutes.
Maximum test time:
2 hours
Reset if the temperature
of the defrosting sensor
is 8°C (46°F) or more.