Wiring Help For Honeywell RTH7500. Its 82 Degrees In The House Please Help - HVAC - DIY Chatroom Home Improvement Forum

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Old 04-05-2010, 06:20 PM   #1
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Wiring Help for Honeywell RTH7500. its 82 degrees in the house please help

I need help trying to figure out where some of the wires go. I have an electric heat pump I have no idea what type or anything, all it says on the unit is Gibson Products and a phone number. I have white, yellow, green, red, blue, orange, and brown wires. The set up is like this:

C W2
G-green in
Y-yellow in
O/B or W-white in
R-red in

on the other side
W2 or AUX
Y2 or E
What do I do with the blue, orange and brown wires??? and do I have the wiring right so far??


Last edited by fcarswell; 04-05-2010 at 06:23 PM.
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Old 04-05-2010, 06:42 PM   #2
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Go look at the Air Handler unit. If you do not know what that is, open up the Yellow Pages, and find the most expensive HVAC company to fix your error.


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Old 04-05-2010, 06:52 PM   #3
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Thanks but I think I can be a big girl and do this on my own. By the way I am fixing somone elses error.

Last edited by fcarswell; 04-06-2010 at 03:53 AM.
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Old 04-05-2010, 07:50 PM   #4
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You need to know what the wires are connected to at the air handler, and the outdoor unit.

There is no real standard color code for low voltage wiring.

So far it looks like your off track in your wiring. O/B-W would usually be the orange wire. But, I have seen a few times where someone used a different color for the O/B-W terminal, and used the orange for something else.

So post where the wires are connected at the air handler/indoor unit, and the outdoor unit.
Then we can help you get it wired right.
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