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    michelle4262's Avatar
    michelle4262 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jan 13, 2010, 08:35 PM
    4 blinks
    My furnace is blowing cold air constantly and flashes 4 red blinks. It says that the "thermal protection open". I have shut the furnace down and back up it started working again until the next night. I have shut the furnace down and back up it started working again until the next night. I had to shut it down again. Please help
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
    Ultra Member
    		  
    #2

    Jan 14, 2010, 08:06 AM
    Does your furnace have a name? A model number? Its hard to help without more info
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