Replacing thermostat for gas furnace only
Have a 2003 Fourwinds with the old style wall thermostat with the hard on/off switch and temp adjustment below with just bars (no numbers). On several occasions, the furnace will start and heat up cam...
Forum Discussion
I have the RTH111 as well now. Use R and W and leave the jumper in like DrewE said. Not sure about red and white wires. With ours, it is two blue wires to the thermostat, where the blue wire is connected and disconnected by the thermostat. With the two blues it doesn't matter which goes where
Easy to check if you have the right two wires- just connect the red and white ends to see if the furnace then comes on.
Easy to check if you have the right two wires- just connect the red and white ends to see if the furnace then comes on.
