Heat Pumps and Electric Heating - Waterfurnace Premier2 AT045

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Gbaird
02-23-09, 07:07 PM
Hello out there.

I have a Waterfurnace Premier system that is driving me nuts. The system would run the aux heating even though the thermostat was off. I replaced the thermostat with a Robertshaw 9720i unit. It worked well for a weekend and came home this evening from work and the system was running aux heat again and was taking the temperature in the house way past the thermostat setting. I tried turning the thermostat off and the system still ran. I tried resetting the system by powering it down and back on and the aux heat still can on. The only way that I got it to stop was to take the thermostat off.

Is there something on my system that could be making the thermostats go bad, or am I just having bad luck getting a good thermostat for my system.

Any suggestions appreciated

m159267
02-27-09, 06:22 PM
Gbaird. I don't have an answer but it appears you are not getting any responses from the forum. Here is a geothermal forum that will probably have some suggestions.
Geothermal Heating & Air Conditioning Forums (http://forum.geoexchange.org/)
Hope you find a solution soon...