Replacing Duo therm thermostat, need help.
I want to replace my analog thermostat with a Hunter model 42999 digital thermostat but the wiring colors are different. My Duo therm has, red, yellow, white, blue, orange, green. The hunter has termi...
Forum Discussion
Old-Biscuit wrote:
*G ------this is where you have to decide whether to install a 'mini switch' in thermostat cover so that you can wire BOTH fan speed controls
OR just wire one.
I only use HIGH speed therefore I only used the BLUE wire to 'G' terminal and taped off Orange wire
IF you choose to install switch then you would wire Blue to one terminal on switch, Orange to other terminal on switch and then a jumper wire to 'G' terminal on t-stat
You must hook up the orange wire for a DuoTherm- they use two relays, the orange turns the blower on, the blue toggles between high and low. If you just connect the blue, you get no fan.
