Honeywell RHC3100C connection help - http://www.hvacmechanic.com/ Forums
Original message
| emilyclay
 |  "Honeywell RHC3100C connection help"
, posted Mon 3 Mar 22:55  
I am not sure what the old model was but the colors and wire went like this:
O-ORANGE
W2-WHITE
E-BLACK
G-GREEN
R-RED
Y-YELLOW
C(I THINK IT IS C, MAYBE B)-BLUE
The new has:
E
AUX
Y
G
O
L
R
B
C
Please help, I need to know what goes to what. I connect them using
E-black
Aux-white
Y-yellow
g-green
o-orange
L-empty
R-red
B-empty
C-blue
This does nothing. I have a pink and tan wire that haven't been used yet. Thanks
EC
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Replies:
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| Houston204
|  "Re(1):Honeywell RHC3100C connection help"
, posted Mon 3 Mar 23:44
You wired it correctly, you just forgot to remove power to your air handler first.
It should have a low voltage blade type automotive fuse in the air handler that you can replace. (probably 5 amp)
"Tip of the Day" Remember to remove power first.
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| | Houston204
| "Re(2):Honeywell RHC3100C connection help" , posted Tue 4 Mar 07:08
Be sure to turn off the breaker(s) to your air handler (not just the heat pump outside).
Electricians will label it furnace or AHU in the panel.
You might verify that stat blue = C at your air handler while you have the panel off.
There will be 2 sets of wires there. The set using a green wire is your stat. The other set is your outdoor unit.
"Tip of the Day" Remember to remove power first.
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| | emilyclay
| "Re(3):Honeywell RHC3100C connection help" , posted Wed 5 Mar 22:18
What if I don't have a fuse? Could it be possible that I need to jump the E and Aux?
EC
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| | Houston204
| "Re(4):Honeywell RHC3100C connection help" , posted Fri 7 Mar 00:08
Jump R (power) and G (fan) to prove that you have low voltage power.
Aux and E are electric heat strip terminals. The fan should still work.
If you don't have a fuse protecting your transformer and you wired it without removing power to the air handler, you probably now need a transfomer.
I hope it's a fuse, 2 bucks a pack at Autozone.
"Tip of the Day" Remember to remove power first.
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