Ask Experts Questions for FREE Help !
Ask
    ryan93se's Avatar
    ryan93se Posts: 3, Reputation: 2
    New Member
    		  
    #1

    Dec 15, 2007, 11:26 AM
    Installing Honeywell RTH6300B from an older 7 wire Honeywell. PROBLEMS
    Hello everyone, I am new here. I found this site which trying to troubleshoot my problem. Any assistance would be GREATLY appreciated. Basically I have an older honeywell programmable thermostat with 7 wires attached. They are as follows...

    C - Black wire
    L - Blue wire
    R- Red wire
    W2 - brown wire
    W1 - Yellow wire
    o/B - Orange wire
    G - Green

    The problem is the new thermostat only calls for 4-5 wires as follows...

    G
    W o/B
    Y
    R
    RC (if needed)

    I am having problems figuring out which ones are needed and what to put where. Has anyone encoutered a problem like this before?

    Thanks in advance :)

    Ryan
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
    Uber Member
    		  
    #2

    Dec 15, 2007, 11:37 AM
    Sounds like you have a heat pump system, and the new stat is only good for standard heat and cooling system.

    You need to become more familiar with what your heat pump has in addition to a standard heating/cooling system, such as aux heat, reversing vales, and find a stat that will work.

    Here is a chart from Honeywell that may help you choose the proper thermostat:
    http://yourhome.honeywell.com/NR/rdo...patibility.pdf
    ryan93se's Avatar
    ryan93se Posts: 3, Reputation: 2
    New Member
    		  
    #3

    Dec 15, 2007, 04:51 PM
    Hmm... you may be right. I just went to pick up a new stat and see if the wiring matches.. ill keep u posted. Thanks!


    Quote Originally Posted by tkrussell
    Sounds like you have a heat pump system, and the new stat is only good for standard heat and cooling system.

    You need to become more familiar with what your heat pump has in addition to a standard heating/cooling system, such as aux heat, reversing vales, and find a stat that will work.

    Here is a chart from Honeywell that may help you choose the proper thermostat:
    http://yourhome.honeywell.com/NR/rdo...patibility.pdf
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
    Uber Member
    		  
    #4

    Dec 15, 2007, 05:31 PM
    Might want to familiarize yourself with thermostat wiring at https://www.askmehelpdesk.com/heatin...ons-58313.html
    ryan93se's Avatar
    ryan93se Posts: 3, Reputation: 2
    New Member
    		  
    #5

    Dec 16, 2007, 06:48 PM
    It was a heat pump system with AUX heat system... installed the new one today and works like a charm :)

    Thanks for everyone's help!
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Installing Honeywell RTH6300B but I have 7 wires. [ 1 Answers ]

I have a York t-stat for a York system and purchased the 6300. My York t-stat has 7 wires (W, B, G, R, X, O, Y). Of those, the Honeywell instructions indicate that the 6300 will use C, G, W, Y, R, and possibly O or B. It says that if you have both O and B that you should install O and tape up B...

Replacing Honeywell T4039M with a Honeywell RTH6300B [ 1 Answers ]

We only have wire colors on the old thermostat and can not match up the letters with the new thermostat (Honeywell RTH6300B)

Replacing Honeywell T8411R with Honeywell RTH7500 - wiring problems [ 1 Answers ]

I need help getting my new, programmable thermostat to work. I currently have a dual-stage Heat Pump and A/C unit that works fine. The current thermostat is the Honeywell T8411R. I don't know the number for the subbase, but it's the one that came with the thermostat. The current (operational)...

Installing Honeywell RTH230B, what to do with blue (B) Wire [ 0 Answers ]

I am trying to install of Honeywell RTH230B thermostat. I removed the old Lux mercury thermostat and their were five wires Rh, W, Y, G, and B (blue). The thermostat has place for all of the wires except the B(blue) wire. Do I need a different thermostat or can the B wire be put in the Rc space...

View more questions Search