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View Full Version : Thermostat p274-0200 blank screen tried turning on and off breaker to the house and f


msmommalicious
Aug 19, 2010, 12:46 PM
I woke up this morning to find my thermostat screen blank. I turned on and off breaker to the house and the one coming from the ac unit outside. It is a Totaline p274-0200. If it is a faulty fuse? How do I check for that?