View Full Version : My heater sign shows a U......

02/21/2009, 12:59 AM
I programmed my ACJR to use the up arrow for my heater and when I checked it tonight it was a uppercase U.... I went threw all the settings and redid the programming and it is still there. Any help?

02/21/2009, 10:13 AM
It is likey OK and maybe gone by the time you read this. There is a description of why you see "U" and what condition causes it to appear here:


Question #1.

02/21/2009, 10:23 PM
Perfect thanks! And yes they did go away a few hours later but now I know why :)