Log in

View Full Version : Wiring my honeywell programmable thermostat


gobbluth101
Dec 15, 2007, 04:58 PM
I have a new Honeywell programmable thermostat rth7400d. I had a Comfortmaker with W1,C,Y,R,G,O. Where do these wires go. I am able to get my fan to work but the heat won't come on. I haven't tested the AC yet. I have a multistage heat pump with aux heat. Please help its cold.

hvac1000
Dec 15, 2007, 06:57 PM
Look at the beginning of this board for the sticky notes. It is all in there for you

hvac1000
Dec 15, 2007, 06:59 PM
Follow this

http://customer.honeywell.com/techlit/pdf/69-0000s/69-1726.pdf

Then look at the sticky notes at the beginning of this board for the color/number change over.