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Why is my honeywell chronotherm IV thermostat screen blank?

Jun 26, 2009 by DC | Posted in Maintenance & Repairs

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

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