LG GR-S642, Service Manual

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7-1-11 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 button is on the main PCB of the refrigerator (Test S/W). The test mode will be cleared in 2 hours regardless of
the type of the test mode and then reset.
3. While in the test mode, the function control button is not recognized though the recognition tone (beep~) sounds.
4. After exiting the test mode, be sure 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 even if the test button is pushed.
Mode Manipulation Contents Remark
TEST 1 Push the test button 1. Continuous operation of the comp
once. 2. Continuous operation of the freezer fan
3. Defrosting heater OFF
4. Every display LED ON
TEST 2 Push the test button 1. Comp OFF Reset if the temp of
once while in the 2. Freezer fan OFF the defrosting sensor
TEST MODE 1. 3. Defrosting heater ON is 10 °C or above.
4. Every display LED OFF
(except the refrigerator TEMP'
status LEDs)
Reset Push the test button Reset to the default setting The compressor will
once while in the start in 7 minute-delay.
TEST MODE 2.
- 20 -
* LED Check Mode: When the refrigerator temp control button and the Super Cool button are pushed and held together for 1 sec
or longer, every LED on the display turns on simultaneously. When the buttons are released, the previous mode is restored.
* FAN RPM VARIETY CHECK : Press super cool button and the refrigerator temp control button are pushed and held
together for 1 sec or longer, FAN RPM is reversed for 30 second (HIGH
↔
STANDARD) and return to the previous condition.
<TEST MODE2 STATUS LED/LCD>
<TEST MODE1 STATUS LED/LCD>