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    jonas_macs's Avatar
    jonas_macs Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Nov 21, 2006, 07:43 AM
    Honeywell RTH7400 wiring
    I got a new honywell RTH7400. I need help wiring up the unit.
    I just had a new Cold air central heating and A/C unit installed. It's electric heat and I need help with the wiring of the new honeywell RTH7400 5-1-1 control unit.

    Wires:
    Green
    Yellow
    White
    Black
    Red
    Orange
    Blue
    Brown (capped)

    On the unit I have two rows:
    Outside Inside... Inside . Outside
    C... C... W2... Aux
    G... G... Y2... E
    Y... Y.. . L
    O/B... W
    RC... RC
    R... R
    (R and RC bridged)

    Now I think I may have figured it out, but the heater trips the breaker after 10 minutes. So obviously I didn't. Is that a simple fix?

    This is what I have:
    C ---------Orange
    G -------- Green
    Y --------- Yellow
    O/B / W - White
    RC and R bridged - Red
    W2 / Aux - Blue
    Y2 / E --- Black
    L --------- Empty
    Can Anyone help?

    Thank you so much in advance...
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member
    		  
    #2

    Nov 21, 2006, 03:00 PM
    Is the breaker for the furnace or the heat pump?
    jonas_macs's Avatar
    jonas_macs Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Nov 21, 2006, 03:19 PM
    I actually broke down. It was for the heat pump. As I said, I finally broke down and called the company that installed the unit last week. They crossed two wires in the unit. Thank you very much
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