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Question About Pro-Tech Thermostat pro-620
What is the difference between the 1st stage diffe...

What is the difference between the 1st stage differential and the second stage differential? My furnace is not cycling enough. It gets cold before it comes on and will not come on until it is three degrees lower than what I have set for the room temperature. I have the d1 on 0.5 degrees and the d2 on 2 degrees (the lowest settings possible).

Asked by Ronda on 01/02/2014 0  Answer

ManualsOnline posted an answer 10 years, 10 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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