LG GR-B218JTA Service Manual page 25

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.
MODE MANIPULATION
TEST1 Push Express Freezing
Key and COLDER KEY
of Freezer Temp. at the
Same time for 3 seconds.
OR Push TEST S/W (on
the main Board) Once.
TEST2 Push Express Freezing
Key and COLDER KEY
of Freezer Temp. at the
Same time for 3 seconds.
In TEST MODE 1 OR
Push TEST S/W Once in
TEST MODE 1
TEST3 Push Express Freezing
Key and COLDER KEY
of Freezer Temp. at the
Same time for 3 seconds.
In TEST MODE 2 OR
Push TEST S/W Once in
TEST MODE 2
Reset Push Express Freezing
Key and COLDER KEY
of Freezer Temp. at the
Same time for 3 seconds.
In TEST MODE 3 OR
Push TEST S/W Once in
TEST MODE 3
* 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 (Display) MODE:
1. To enter this mode, raise either the Refrigerator or Freezer temperature to its highest setting. Then, press that Warmer
Key and hold for about 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.
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) Continuous operation of the
COMPRESSOR and the Freezer fan
2) Stepping DAMPER CLOSE
3) Defrosting HEATER OFF
4) DISPLAY LED ahows no. 2
1) COMPRESSOR and the Freezer fan
OFF
2) Stepping DAMPER CLOSE
3) Defrosting HEATER ON
4) DISPLAY LED ahows no. 3
Reset to the previously setting
Before TEST MODE
- 25 -
REMARKS
Reset if the
Temperature of the
Defrosting sensor is
8°C or more.
The compressor will
Start after a 7-minute
Delay.