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View Full Version : How to connect a 4 wire thermostat?


Mr T
Aug 21, 2007, 06:33 AM
I'm trying to wire a 4 wire theromostat but I need to figure out what wire goes to the right terminal. The red is power, the green is fan, but the blue and the white I not sure. The Termostat is a hunter 40035a model. The terminals on it are rh,rc with a jumper wire and g fan, y air conditioner, w heat. Can anybody help?

Mr. T

acetc
Aug 21, 2007, 04:45 PM
Connect white wire to "W" , Connect green wire to "G" red wire to "RH&RC", blue wire to "Y", looks like some one substituted a blue wire for a yellow wire (probable not a yellow wire there) Good luck, Mike