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Posted on Jan 09, 2010
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I tried to insatll my new honeywell programmable. the old t-stat had a white and red wire connected allread. there were 3 other wires unused, G,W,R. I hook up the original R,W wires to the new t-stat and that just caused it to run non stop regardless of temp change. I also tried to connect all the wires based off the diagram and got the same result with furnance just turning on and running... please help heating bill mounting up

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  • Posted on Jan 09, 2010
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The red and white wires go to the R and W terminals on the thermostat. Disconnect what you have now and hook the red wire to the R terminal and the white wire to the W terminal on the new thermostat and see what happens.

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