Wiring New Thermostat

Old 08-14-07, 09:08 AM
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Wiring New Thermostat

I have a new Honeywell Focus PRO 5110 thermostat.

The wiring choices are Rc R Y C W G

The wires used on my old thermostat are G R E O W2 C Y
It's a heat pump system with Em. heat.

I can't seem to find in the instructions how to handle the wiring differences and Honeywell says that I have to have a licensed contractor to install it when I call them.

Can anyone tell me how to wire it up or can it not be done with this model?

Old 08-14-07, 10:55 AM
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I may be wrong but your new stat appears to be for conventional a/c and heating not for a heat pump like your old one.
Old 08-14-07, 12:46 PM
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Matt is right, that t-stat won't work.. it's heat and cool on a single stage system.

You want TH6220 model.

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