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    fbd21's Avatar
    fbd21 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Oct 29, 2008, 05:25 PM
    Rth7500 no longer heating and is only blowing cool air
    Installed a Honeywell Rth7500 today. Heat worked fine for about 4 hours. Now the system only blows cool air even though the thermostat shows heat on. My wiring is as follows:
    c, b, g, y, r, and w2 plus extra piece of 18 gauge wire connecting it to E (the old thermostat had w2 and e sharing one wire)
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Oct 29, 2008, 06:14 PM
    It is possible the beater broke or is having other problems unless the wiring you did today came loose or is failing to make proper contact. I would revisit the work you did earlier.
    fbd21's Avatar
    fbd21 Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Oct 29, 2008, 07:24 PM

    Thanks for the quick reply, I'll follow your suggestion and see what happens
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