LG REFRIGERATOR, Service Manual

Page: 48 / 69

9 -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 WARMER 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 KEY of refrigerator Temp. control or of freezer Temp. control is pushed and held over 5 seconds, warmest
temperature’s It converts to Demonstration 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 warks normally and can be demonstrated)
4. It reset if you do again as clause.
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MODE MANIPULATION CONTENTS REMARKS
TEST1
TEST2
Reset
Push Express Freezing
key and COLDER KEY of
Freezer Temp. at the
same time over 3
seconds.
Push Express Freezing
key and COLDER KEY of
Freezer Temp. at the
same time over 3 seconds
in TEST MODE 1
Push Express Freezing
key and COLDER 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 CLOSE
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.