Why is my honeywell chronotherm IV thermostat screen blank?
Also, the circuit breaker did not trip, and the thermostat appears to be fine as I tried using it on another unit in the house and it worked fine. Should I contact an HVAC company or there something simple I am missing?
It sounds like there is a loose connection either in the sub bases or at the furnace. Typically when those stats go bad they just go.
buy a new one and if the new one has the same problem, just return it and call a hvac tech. you may need a new 24v transformer installed or even a new control unit if that is the case.
~i don't think its a circuit breaker. the thermostats work off the same power as the furnace.
