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    yurka80's Avatar
    yurka80 Posts: 2, Reputation: 1
    New Member

    May 12, 2008, 11:21 AM
    Replacement of Carrier Heat Pump Thermostat with Honeywell TH6000 series thermostat.
    I have a Carrier Series 50QT Electric heat pump that still uses the original non programmable thermostat. I am trying to replace it with Honeywell TH6000 series programmable thermostat.

    The wiring on the existing Thermostat as follows:

    O - White, I am thinking this is the Reversing Valve?
    Y - Blue, Cooling stage 1?
    R- Red, Power
    E - Jumpered to W2 Emergency Heat relay?
    G- Fan
    C - 24 Vac Common?

    What is the proper mapping of the connections to the new thermostat? And also what are the right programming options for it?


    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert

    May 12, 2008, 11:57 AM
    First of all you did not supply the complete model number. There is a letter after the 6000 part.

    Here is a wiring diagram that will cover them all.
    Just follow the directions

    If you cannot follow the directions then you will probably have to call for a pro to do the install. Way to many variables to and to many chances of damaging the unit.

    NOTE Honeywell has a toll free number to call if you need them.
    yurka80's Avatar
    yurka80 Posts: 2, Reputation: 1
    New Member

    May 12, 2008, 12:13 PM
    I used that guide, namely the wiring schema for 2H/1C Heat Pump System, the problem is that it's calling for 7 wires, one for L, but my existing Thermostat only has 6. Also when I did wire it, once my heat turns on, it immediately turned on the Emergency Heat, but the air coming out of the registers was still cold.
    enirpmet's Avatar
    enirpmet Posts: 1, Reputation: 1
    New Member

    Oct 11, 2009, 01:39 PM
    I have they same problem with the emergency hgeat turning on immediately. What was your resolution?


    Seann's Avatar
    Seann Posts: 32, Reputation: 1
    Junior Member

    Apr 27, 2011, 03:00 PM

    first of all this is a professional thermostat and should be installed only by a contractor,however
    as per wiring it seems to be Heatpump all electric
    hense the ISU also has to be changed so speak to a contractor or check installation guide

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