User interface

What is the off indicating on the display? Cooling off or ice off? Is there a way to turn the cooling on and off from the display? Does the unit not run at all? Is it room temperature in this unit?

I found this information on a similar model that might work for your model. Try this out and let me know.

This4-3) Exhibition Function
function is for a display purpose on the floor of show room or store.
1) Mode ON/OFF 1-1) For the exhibition mode, press Power Freeze and Freezer Temp, buttons simultaneously for 8 seconds until a “ding-dong” sounds. 1-2) Press the same time buttons again for 8 seconds to cancel this mode put with a “ding-dong” sound.
2) Operation 2-1) Most of the system function except the compressor operation are working properly. 2-2) There is no defrost cycle in this mode.
1) Self-Diagnostics in the initial Power ON 1-1)The control board performs a self diagnostics test within 1 second and check out the temperature sensors abilities. 1-2) If a sensor failure occurs, a corresponding LED segment will blink with a beep. 1-3) When a LED segment blinks, only the cancellation function (Press Power Freeze and Power Cool buttons simultaneously for 8 seconds) is acceptable. 1-4) After a replacement of bad sensor or a cancellation of this function, this self diagnostics will end.
2) Self-Diagnostics in the normal operation 2-1) To select this function, press Power Freeze and Power Cool buttons simultaneously for 8 seconds with an audible tone. 2-2) In the self diagnostic mode, only corresponding LED segments will be illuminated (see the check list on the next page) 2-3) After a 30 second illumination of error signal, the system will return to the normal operation.