I've had this ongoing issue with power failures with our home HVAC.
When we get a power failure and the power comes back , the furnace
heat comes on and stays on. I've resorted to turning off the gas to
the furnace in the summer. I've also a power failure and the A/C come
on and stay on.
I'm using a carrier wireless thermostat. Can't find info online about
the carrier model but it looks to be the same as the one sold by
When the power comes back on, the receiver shows power and heat
on and does not respond to the thermostat.
Totaline P474-1100REC Wireless Receiver
Totaline P474-1100RF Wireless Thermostat
If I turn off power to the HVAC at the breaker box , wait and power back
on, it always locks up this way. If I cycle power again, things go back
Everything works as expected unless we get a power failure of some
Any ideas ? I'm thinking there is a problem with the wireless receiver....