Heat pump thermostat wiring


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Old 12-30-08, 08:15 AM
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Heat pump thermostat wiring

I have a very similar question as seDIYgal had last month, except I have a blue wire (to C) and she had a black one (to E). (http://forum.doityourself.com/thermo...at-wiring.html)

I'm replacing a heat pump thermostat with a Honeywell RTH7600. The existing wiring is:

red > R
blue > C
white > W2
yellow > Y1
orange > O/B
green > G

The new stat does not have a W2. The instructions state "...if your old thermostat has Y1, W1 AND W2 wires, stop now and contact a qualified contractor for help".

Does the white simply go to the Aux on the new stat, and jumper from E to Aux?

The available terminals are the same as seDIYgal:

C
G
Y
O/B
RC (jumpered to R)
R (jumpered to RC)
AUX
E
L

The instructions diagram for heat pump read:

C terminal = C or X or B wire
G terminal = G or F wire
Y terminal = Y or Y1 or M wire
O/B terminal = O or H or B wire
RC terminal (jumpered to R) = RC or R wire
R terminal (jumpered to RC) = R or V or VR wire
AUX terminal = AUX or W or W1 or W2 wire
E terminal = E or X or X2 wire
L terminal = L or F wire

Thanks!!
 
  #2  
Old 12-30-08, 09:37 AM
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Originally Posted by mcnallyb
Does the white simply go to the Aux on the new stat, and jumper from E to Aux?
Yes.

Do you have extra wires in the wall we could use?
 
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Old 12-30-08, 11:28 AM
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Jay,

Thanks for the response!

There are black and brown wires, but I followed them into the unit and they are not connected. Just confirming, the white should go to the Aux on the new stat, and jumper from E to Aux?

Thanks again!
 
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Old 12-30-08, 03:12 PM
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Correct.


Since you got extra wires in the wall, and is not connected to anything, I want to so something else for ya.

What is the make and model of your air handler?
 
 

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