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Frequently Asked Questions

Why would thermostat go blank?

The possible reason your thermostat screen can go blank is a loss of power to the furnace. Power stealing thermostats get their power from the transformer. Most modern thermostats are powered by the transformer in your air handler or furnace. In rare cases, the transformer could be located in the condensing unit.

What does it mean when the thermostat is blank?

If your thermostat is wired directly into your home’s electrical system, a blank screen indicates there is no power going to the unit, which means there may be a tripped breaker or a problem with the wiring.

Why is my thermostat blank?

If your thermostat is wired directly into your home's electrical system, a blank screen indicates there is no power going to the unit, which means there may be a tripped breaker or a problem with the wiring. If the breaker controlling the unit hasn't tripped, contact an HVAC technician or an electrician to inspect the wires.


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