I can operate my heating and cooling unit by my pc but not by my, Hello I have icomfort thermostat and lennox unit, the icomfort thermostat screen went blank when I take it off the wall and connect the port on it to my computer it gets back on (i see the loading sig, My iComfort thermostat has gone my iComfort thermostat has gone black and the ac stopped working, I have a lennox icomfort thermostat 103445-04, it's on but the screen went white, I have a lennox icomfort thermostat that I'm getting 28v to but the screen is dark, how can I see if someone adjusted the brightness. I will tell you that...the things you have to go through to be an Expert are quite rigorous. I have a Honeywell Home thermostat. Touch the “reset” button. Flashing amber when firmware or software updates for system component. I cannot thank you enough for your help. - if that is correct, then there are two things to check before I give you the bad news. working on window types, split type, and package. I have a newly installed XC21 A/C unit and the iComfort wifi, Air conditioning unit does not c ome on. My Lennox iComfort thermostat screen has gone blank.

Use the arrows to highlight that variable and then use “modify” to proceed to “Time and Date”.

Just want to make sure the air-conditioning is still going to work. Change the batteries to see if this restores the thermostat screen.

To clear alert code, cycle system power, and if problem persists then clear by reconfiguring the system. The thermostat is blank and unresponsive. I have been an HVAC/R mechanic/technician for 30+ years.

I cannot thank you enough for your help. Steady amber indicators- They show the thermostat boot up and self-check processes are in progress or have completed. The screen will go blank for about three seconds. Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.

I turned the system off and left off for 10 min but it still won't come on. Flipped air handler breaker off then on and after a few minutes the thermostat screen lit up and A/C turned on.

My Lennox iComfort thermostat screen has gone blank. When it came back on, my Lennox iComfort touchscreen thermostat did not reboot.

The alert code automatically clears when the system detects the issue is no longer there. Touch the “reset” button. I have a Lennox iComfort Wi-Fi catalog no 10F81, Part no 103445-03. Removed and, My Honeywell 8500 WF thermostat screen is blank, the C wired, Can u assist me with changing my thermostat i have a lennox, For about a week now, our Lennox iComfort programmable. Remove your Lennox thermostat from the wall if the display is blank.

The setting is Auto/Cool.