i have a generator (only runs lights and TV...no A/C) that I used for the 8hrs the power was out. I turned off the main breaker and the A/C's. Once the power was restored, my downstairs thermostat was blank. I can turn on the blower fan, but that is it. I replaced the themostat, but still nothing. I put the old one back on and then it worked.
Yesterday got the same thing...big stome..flicker...no power...hooked up generator and used until power restored. Now, no screen again on my thermostat. It is digital and has no battery backup. I can run the fan, but that is it.
Does anybody have any idea what is going on? I checked the furnace (Lenox). The 2 green lights are flashing together and slowly which from what I can tell (reading the panel) means everything is fine. I checked the fuses..etc...nothing is wrong as far as i can tell...I have the same system for upstairs, but it works fine...knock on wood as it is suppose to be over 100 today.
Thanks for the help.