Honeywell RTH3100C Wiring Question

Old 06-25-07, 11:02 AM
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Join Date: Jun 2007
Location: Orlando
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Honeywell RTH3100C Wiring Question

I am replacing a Trane Baystat239A thermostat with a Honeywell RTH3100C. I have a heat pump with auxiliary heat. All wires to the old thermostat are accounted for on the new thermostat EXCEPT a "tan" wire which is currently connected to "T". The new thermostat connections are: E, Aux, Y, G, O, L, R, B, C. The old thermostat connections are: G, O, X2, Y, T, R, W, U, F, B. I need to know where to put the existing tan (T) wire on the new thermostat.
Old 06-25-07, 03:59 PM
Join Date: May 2007
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Don't need it

I honestly can not remember exacly what 't' is with out going to my van and looking it up.

But I know I can say tape it off and forget it.

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