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

    Jul 6, 2008, 01:34 PM
    Honeywell T8411R Blue wire Not Connected
    We were going to replace the TR8411R thermostat with a programmable one and have discovered that we apparently have a heat pump (we just bought the house last week). As we were trying to match the wires to the new thermostat we found that a blue wire was not attached. The installer seemed to follow the color coding to the lugs pretty well so we are assuming that the Blue wire should go to the B lug.

    Currently there are wires attached as:
    Lug Wire Color
    R Red
    W2 & E White
    O Orange
    Y Yellow
    G Green
    C Brown

    L, B, W1 Currently don't have a wire connected to them.

    Do you think we should attach the Blue wire to the B lug?

    Are there special programmable thermostats for Heat Pumps?
    esquire1's Avatar
    esquire1 Posts: 2,483, Reputation: 209
    Ultra Member
    		  
    #2

    Jul 6, 2008, 01:49 PM
    Normally blue wire is common. If you have batteries in your new thermostat you will not need the blue wire connected. Just tape it off.
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