it flashes a number 3 on screen and the furnance seems to run longer and blows cold after a point. is there a filter in the thermostat?

Asked by dave tinlin on 12/30/2012 1  Answer

ManualsOnline posted an answer 11 years, 3 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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