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    AmyCGoose's Avatar
    AmyCGoose Posts: 5, Reputation: 1
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    #1

    Mar 4, 2010, 07:03 AM
    Thermostat Help
    I am trying to upgrade my Luxpro thermostat to a Honeywell RTH7500D programmable thermostat. I had all of the connections matched up except for two. Any help would be appreciated. Here is what I have:
    Luxpro (old Tstat)
    E-brown wire
    Y-yellow wire
    B-black wire
    O-orange wire
    W2-white wire
    R-red wire
    G-green wire
    C-blue wire

    My new Honeywell has:
    C, G, Y, O/B or W, RC, R, W2 or Aux, Y2 or E, L

    Can anyone tell me what goes where or how to find out?
    AmyCGoose's Avatar
    AmyCGoose Posts: 5, Reputation: 1
    New Member
    		  
    #2

    Mar 5, 2010, 07:30 AM

    The more research I do, the more I think that my old thermostat was wired incorrectly. The Luxpro manual says to use the B terminal OR the O terminal, not both. The wiring diagram on my Goodman CPLJ36 does not show the black wire (B) going to the thermostat at all. Should I just tape this one off?

    Any thoughts?
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