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

    Nov 20, 2006, 08:49 AM
    Furnace will not fire
    I have a comfortmaker GNJ075n12a1 80% furnace installed in 96 the igniter come on and the blower comes on and the system cycles a couple of times before the control locksout on during this time the gas valve is not energizing to fire the furnace if you shut the system down for a couple of minutes and turn it back on it will work for approx 4-5 hours then the problem starts all over again I had the furnace company come out and they could not find a problem. Is this an issue that I need to replace the controller or the gas valve.
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member
    		  
    #2

    Nov 20, 2006, 04:04 PM
    I would start by looking at pressure switch's and limits first. These parts cause many more nuisance lock outs than boards or valves.
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