I have the same question.the manual shows a line of leds, even the diagram on the inside of the refer door shows the line of leds and explains how to trouble shot. The problem is that the display on the unit does not have a line of leds it has a small box with green line to indicate what mode and cool setting. Mine has an upside down u.how am I supposed to no what that means. Even the manual on this site that I down loaded does not show that display.what do you think