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    Meena54's Avatar
    Meena54 Posts: 5, Reputation: 1
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    #1

    Dec 1, 2011, 05:10 PM
    Digital, programmable Thermostat to replace mercury on Rheem RPLA-025JAZ
    I felt quite confident after doing this myself until I just realized that the heat pump never comes on (fan never turns in outside unit). I'm getting great heat but my first month's bill was very high. Am I totally running on auxiliary heat? How do I rewire the White-Rogers thermostat to correct this?
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    Dec 1, 2011, 08:48 PM
    The model number of new stat. is needed, also tell us how you wired the tstat wires.
    Hold on to your install instructions and instructions as to how to program the tstat

    Get back to us with more info
    Meena54's Avatar
    Meena54 Posts: 5, Reputation: 1
    New Member
    		  
    #3

    Dec 2, 2011, 02:58 AM
    White-Rodgers 1F78 5/2 Day Programmable Thermostat
    Wiring photo attached.
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    Meena54's Avatar
    Meena54 Posts: 5, Reputation: 1
    New Member
    		  
    #4

    Dec 2, 2011, 03:48 AM
    I think I figured it out. I have a thermostat that only works with one stage heating and my heat pump is two stage.
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #5

    Dec 2, 2011, 06:14 AM
    Good deal,, Yes you need a tstat with 2 stage heat and 1 cool
    On the 2 stage, one is for heatpump the other is for aux. furnace
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