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    Rookiewannabe's Avatar
    Rookiewannabe Posts: 6, Reputation: 1
    New Member
    		  
    #1

    Mar 20, 2011, 10:02 AM
    Reverse air flow in furnace.
    I just installed a new thermostat and the registers are not pushing out any air/heat. It appears they are pulling air in. Is this possible? I feel I connected the wiring correctly. However, I assume something is wrong there. Also, the copper tubing outside the furnace is starting to ice up. Never seen this before. I went from an old GE weathertron(mercury ampule)to a Honeywell RTH7400/7500.
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    Mar 20, 2011, 10:36 AM

    Has yoiur furnace actually fired or can you tell if your AC compressor is running?
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #3

    Mar 20, 2011, 11:41 AM

    What type of system do you have. Is it a conventional forced air gas furnace with air conditioning (coil on top of furnace, and condenser outside). Or is it a heatpump. Sounds like something got hooked up wrong, but that would not cause the blower motor to reverse direction. Take a piece of toilet paper and hold it to the registers, and let me know if they are blowing or sucking.
    Rookiewannabe's Avatar
    Rookiewannabe Posts: 6, Reputation: 1
    New Member
    		  
    #4

    Mar 20, 2011, 01:28 PM
    Comment on mygirlsdad77's post
    I think I figured it out. I had the setting on the thermostat for the Heat pump changeover valve set to cooling instead of heating. I corrected it and it appears I'm getting heat as desired and no icing on the piping. Thanks for your speedy response.
    Rookiewannabe's Avatar
    Rookiewannabe Posts: 6, Reputation: 1
    New Member
    		  
    #5

    Mar 20, 2011, 01:28 PM
    Comment on ballengerb1's post
    I think I figured it out. I had the setting on the thermostat for the Heat pump changeover valve set to cooling instead of heating. I corrected it and it appears I'm getting heat as desired and no icing on the piping. Thanks for your speedy response.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #6

    Mar 20, 2011, 02:47 PM

    Glad you got it working. Thanks for the update.
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