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    SelfHelp7's Avatar
    SelfHelp7 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 21, 2008, 03:38 PM
    Gas Flame Pulsing
    I have a unique situation, and have picked the brains of quite a few people, to no avail.

    I have a Rheem Criterion gas furnace. Here is what happens:

    Draft inducer initiates
    Igniter (electric) lights up
    Gas is fed through a minute later
    All 4 burners light up simultaneously (for the most part)
    All 4 burners start "pulsing" simultaneously (about 2 times per second)

    When we first moved into the house the burners were smooth, but after a couple years this "pulsing" thing started. When I first noticed it, it would start slowly at first (about 1 pulse every 2 seconds) then smooth out. Then the pulsing would increase in frequency. Now it doesn't even smooth out, just a consistent 2 times per second. The furnace heats really well, cycles on and off accordingly. I'm just concerned about this "pulsing" thing. Any ideas?

    SelfHelp7
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Nov 21, 2008, 04:31 PM
    Sounds like a defective pressure regulator.
    What kind of gas do you have natural or LP?
    letmetellu's Avatar
    letmetellu Posts: 3,151, Reputation: 317
    Ultra Member
    		  
    #3

    Nov 21, 2008, 05:20 PM

    It sounds like hvac probably told you the answer but one thing that you could do if you would like is to call your gas provider and have them run a pressure test on their lines, it could be too high and your regulator is just trying to compensate for it.
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