Reasons for a blank screen on a honeywell thermostat.
Air conditioner control panel blank.
The issue may be that the circuit breaker for the thermostat has tripped.
Programmable thermostats feature easy to read screens that allow you to program.
Help i have no display on the air conditioning thermostat control its blank.
The flap will close properly.
The thermostat is a crucial part of your home s hvac system.
The air or heat doesn t turn on when i switch on off.
I flipped the ac fuses on off at the main fuse box panel and nothing happened.
The safety switch was triggered.
If your thermostat screen has gone blank and your thermostat runs on batteries the first thing you should try is replacing the batteries with a fresh set.
Then out of the blue the air conditioner came on and the.
In such a case operate the air conditioner.
In some homes an air conditioner or furnace can trigger a safety switch and turn off the thermostat entirely if any damage has been detected.
You can t control your air conditioning and heating without it.
The flap may have been touched during operation.
I replaced the two 30amp fuses in the outside fuse box and nothing.
Check the electrical panel and see if any of the breakers needs to be reset then see if the thermostat s display has come back on.
Operate the air conditioner and then turned it off.
If your air conditioner s condensate pan has flooded it will activate a limit switch that will shut off power to the unit.