What causes thermostat to lose power?
What causes thermostat to lose power? The power is out or a circuit breaker has tripped The power loss could also be the result of a tripped circuit breaker that powers the air conditioner or heater. Many thermostats run on low voltage sent from the transformer on the HVAC system; if the transformer loses power, so will the thermostat. Will disconnecting thermostat Turn off heat? Since a room thermostat is basically an ON-OFF switch that calls for heating or cooling in response to room temperature, when we disconnect the thermostat itself, that's the same as NOT calling for heating or...