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-   -   gas furnace keeps running thermostat off (http://www.diychatroom.com/f17/gas-furnace-keeps-running-thermostat-off-41492/)

cblake 03-31-2009 09:19 AM

gas furnace keeps running thermostat off
 
Help! New to gas and having serious problem. Tried replacing Honeywell digital thermostat batteries, tried reprogramming all temps multiple times. Turned off thermostat, gas keepis running temp at 80 degrees. :furious: Finally out of deperation and perspiration, I had shut off the furnace switch. I must leave for work now and I am not looking to waste more costly fuel in having summertime temps in my NY home. Can anyone help?:eek: The gas furnace is a HydroTherm HC-125C, not sure how old.

kenmac 03-31-2009 12:55 PM

If all worked ok until you replaced t.stat ...You have the t.stat wired wrong Sending voltage to the gv at all times


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