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    bowhunter1's Avatar
    bowhunter1 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Feb 21, 2012, 02:56 PM
    Coleman evcon furnace model # EB178
    When I turn the thermostat in the auto side nothing happens but when in the manual (ON) position the furnace works. What do you think my problem is. I replaced a blower relay that was humming but that didn't seem to do the trick.
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    Feb 21, 2012, 07:24 PM
    What kind of tstat do you have? Name/model number
    bowhunter1's Avatar
    bowhunter1 Posts: 2, Reputation: 1
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    #3

    Feb 22, 2012, 06:44 AM
    It is a honeywell 5-2 day programmable thermostat with backlight model# is RHT2300B
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #4

    Feb 22, 2012, 07:05 PM
    Did you by chance unhook any of the thermostat wires from the furnace when you replaced the relay? If so, are you certain you got them hooked back up correctly? Let us know.
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