wiring problem - http://www.hvacmechanic.com/ Forums
Original message
| louie42158
 |  "wiring problem"
, posted Fri 4 Jun 20:15  
I purchased a Hunter 44760 to replace a White-Rodgers 1F58W-77. the wiring on the old thermostat was R wire to R, Y wire to Y, Green wire to G, Blue wire to W2 (with a jumper to E) and the orange wire to B. There was a white wire coming out of the wall not connected to anything. I wired the Hunter the same way and have "No AC Power" and the unit won't turn on. I called Hunter and the said I needed a "common" wire, which I have no idea which one it is or what it is. So I decided to wire the Hunter to the same color codes as the where the wires coming out the wall, and the unit turned on, the heat only, and still "No AC Power" came on. (By wiring out the wall I mean Blue to B, Orange to O, and so forth). Any ideas as to what I'm doing wrong or missing?
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Replies:
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| xenos
Webmaster 
| "Re(1):wiring problem" , posted Sat 5 Jun 19:06
Yes you need a common. since youhave an extra wire use it as the common.
Xenos.
The best way to escape a problem is to solve it.
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