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Wireing a honeywell thermostat

I am trying to replace a old mercury thermostat with a honeywell model rth3100c My old thermastat has a white wire going to W2, yellow to Y, green to G, red to R, orange to O, nothing to C or E. This is for a Heat Pump The new thermostat has terminals E, Aux,Y,G,O,L,R,B,and C Can anyone help? Thanks Bill

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Bill ..You dont have a heat pump.This controller will not work for a conventional system. Get the right thermostat

Posted on Jul 24, 2009

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How do you relpace an A.C. thermostat?


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