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    butchy1970's Avatar
    butchy1970 Posts: 1, Reputation: 1
    New Member
     
    #1

    Oct 28, 2008, 09:59 AM
    Wiring Troubles
    I just recently replaced my RUDD thermostat with a new Honeywell RTH7400. My problem is the heat is not working. I'm not sure if the wiring is connected correctly.

    Here's what I have :
    C- blue
    G- green
    Y- yellow
    W- white
    RC- red
    W2- black
    Y2- brown

    Can anybody help?
    bubbys123's Avatar
    bubbys123 Posts: 7, Reputation: 1
    New Member
     
    #2

    Jun 2, 2009, 05:12 AM
    Quote Originally Posted by butchy1970 View Post
    I just recently replaced my RUDD thermostat with a new Honeywell RTH7400. My problem is the heat is not working. I'm not sure if the wiring is connected correctly.

    Here's what I have :
    C- blue
    G- green
    Y- yellow
    W- white
    RC- red
    W2- black
    Y2- brown

    Can anybody help?
    Try this site: Thermostat wiring colors and furnace terminal designations repair.
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
     
    #3

    Jun 2, 2009, 07:51 AM

    This may help too. https://www.askmehelpdesk.com/heatin...eat-58313.html
    ohb0b's Avatar
    ohb0b Posts: 215, Reputation: 14
    Full Member
     
    #4

    Jun 3, 2009, 10:44 AM
    Quote Originally Posted by butchy1970 View Post
    I just recently replaced my RUDD thermostat with a new Honeywell RTH7400. My problem is the heat is not working. I'm not sure if the wiring is connected correctly.

    Here's what I have :
    C- blue
    G- green
    Y- yellow
    W- white
    RC- red
    W2- black
    Y2- brown

    Can anybody help?

    Two wires, hook it up...
    Three wires, f**k it up...
    Four wires... give it up!
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
    Uber Member
     
    #5

    Jun 3, 2009, 03:31 PM

    I see white as being for Heat most often.
    If that doesn't work, A Tech might open Air Handler and see where the connection for heat is, may be a W. or follow back from Heat Strip to a Contactor or Relay. The white would connect to the Contactors 24 volt coil.
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
     
    #6

    Jun 3, 2009, 03:33 PM

    That is the most common, white is 24 v to start the heat.
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
    Uber Member
     
    #7

    Jun 3, 2009, 03:39 PM
    Ballenger, Excellent link, I Noticed no activity from NorthernHeat for over a year. Hope He/She is OK.
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
     
    #8

    Jun 3, 2009, 03:41 PM

    Northernheat and MOWERMAN 2438 both disappeared, wonder if they are together. LOL Northerns info was so great he/she is really missed but we are lucky to still have those links.
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
    Uber Member
     
    #9

    Jun 3, 2009, 03:48 PM

    You Take Care.

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