LG GR-F218 Service Manual page 29

8-1-16 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 on the 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.
* Freezer Fan Variable RPM Check:
To check the variable rpm, press and hold the WARMER keys of both the REF TEMP and FRX TEMP. The fan speed will
change (low to high or high to low) for 30 seconds before reverting to its original setting.
* Demonstration (Display) MODE:
1. To enter this mode, raise either the Refrigerator or Freezer temperature to its highest setting. Then, press and hold
WARMER Key for 5 seconds.
2. The LED panels will display OFF, to indicate that the compressor, circulating fan, damper, and defrost heater are not
operating.
3. The open door alarm and the lamp auto-off feature will work normally and can be demonstrated.
4. To reset to normal operation, press and hold either WARMER key for about 5 seconds.
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