Ask Experts Questions for FREE Help !
Ask

Thermostat wiring

Asked Aug 12, 2007, 11:27 AM — 2 Answers
I had an older honeywell thermostat and I wanted to change it to a programmable one. I have a multistage heat pump. I have 6wires coming out ofthe wall, that are not labeled and can get my ac or heat to work. I did purchace a RTH7400 thermostat that is by honeywell. My wires are red, pink, orange, white, green and yellow. Is there a way I can get the combination right for the wiring? They are not labeled.

Search this Thread
Share |
2 Answers
esquire1's Avatar
esquire1 Posts: 2,496, Reputation: 1082
Ultra Member
  
#2

Aug 12, 2007, 11:50 AM
Go to the air handler and see what they are connected to there. That will tell you how to connect at the thermostat
Helpful
acetc's Avatar
acetc Posts: 1,006, Reputation: 402
Ultra Member
  
#3

Aug 12, 2007, 11:55 AM
Go to the air handler and see which color wires connect to what letter on the printed circuit board and then go out side and see what color wires connect to what letter.
The red normally connects to "R" , the green to "G", the yellow to "Y", the White to "W2", the orange to "O". The pink is going to have to be chased out ,Might go to "C".
Helpful
Not your question? Ask your question View similar questions
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Add your answer here.

Remove Text Formatting
 

Undo
Redo
  
Decrease Size
Increase Size
Bold
Italic
Underline
Align Left
Align Center
Align Right
Ordered List
Unordered List
Decrease Indent
Increase Indent
Insert Email Link
Wrap [QUOTE] tags around selected text
Wrap [CODE] tags around selected text
Wrap [HTML] tags around selected text
Wrap [PHP] tags around selected text
Wrap [YOUTUBE] tags around selected text
Notification Type:



Check out some similar questions!

Thermostat Wiring Help [ 10 Answers ]

I'm replacing my thermostats with Honeywell Chronotherm IV Model 8600 (power stealing) and having some trouble with wiring. I have five thermostat wires coming out of the wall - red, white, green, blue and yellow. I have a 24 volt system with gas forced air and central a/c. All components are...

Thermostat Wiring - From Two to One Thermostat [ 4 Answers ]

Currently my central a/c unit is hooked up to a Honeywell CT3500 Programmable Thermostat. I've noticed that the thermostat can handle heat as well as cooling. My furnace is hooked-up to an older manual thermostat. It is a simple 2 wire set-up - red & white. Could the furnace be hooked-up to the...

Wiring a thermostat [ 1 Answers ]

How do I wire a honeywell pro 4000 from the air handler and the heat pump to the thermostat?

HELP! Thermostat Wiring [ 3 Answers ]

We just bought an older house and are in the process of replacing 1960's wood paneling with drywall. The thermostat had been "painted" onto the paneling (many times over). After I removed the screws, I had to pry the t'stat away from the wall, which caused the wires to become dislodged from their...

Thermostat wiring [ 3 Answers ]

Hi all, great site! My problem is that we only have 3 wires coming up to our thermostat. We are installing central air and I was wondering if it is possible to wire the thermostat with only 3 wires? Thanks :D

View more Heating & Air Conditioning questions Search