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

    Mar 31, 2014, 03:25 PM
    High aux. or spill limit switch
    Having problems with york furnace. Blower kicks on but no flam . Fault light blinks 4 times cheat sheet says High Aux/spill limit switch open?
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #2

    Mar 31, 2014, 05:01 PM
    Those are safety switches that indicted you have a heater fault. One is high limit and the other indicates you are not getting combustion and gas is present, spilling back out. Possible venting issue or dirty gas tubes. Best to have an HVAC person look at it.
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #3

    Mar 31, 2014, 07:11 PM
    There is a reset button but that could cause a safety issue if the furnace actually has a fault. http://www.justanswer.com/hvac/61ds4...-high-aux.html
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