Questions & Answers for: Honeywell power outage

...power outage and then it returned about 20 minutes later. Since then the thermostat reads -AC and won't kick the heat or the Air Conditioning on. It won't alllow me to program anything either. -AC ...

...power outage in my area yesterday. When the power came back on my thermostat was not working right. Strange letters and numbers appeared where the temperature normally is shown. I can not get it to ...

How to get temperature reading on thermostat after a power outage Normally the room temperture shows in display and setting temptr blinkering while you press the setting

...power outage. How do I get it to work? The transformer may have been fried. test this with a line testing kit like you would use to trace a line in a car. If the power is not going threw the ...

power outage. We had a power outage last night and now there is no display and won't turn on the heat. The fan will come on if it switch it to the ON position but won't start the heat.

...power outage what happens to a programmable thermostat after a power outage? Most programmable thermostats have batteries to keep the program from being lost in a power outage. If you thermostat has ...

...power outage After a power outage (and returned power) everything in the house works but the Honeywell TH9421C1004. No batteries on the back. I've reset the breaker. Getting pretty hot. Help! Thanks. ...

...power outage. How dove ss I turn it back on? Power went out and is now on. Everything in the house works but the my Honeywell TH9421C1004. I have no batteries (that I can see). Looks like it plugs ...

Honeywell time blinking on digital thermostat The time may have to be reset following a power outage.

shotdown before it start doing that. A power outage should not damage a thermostat. Try to reprogram all times and temps. You may need to disconnect power for a longer time to make it reset completely