Question about Hayward H Series Induced Draft Abg 100,000 Heater

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Hayward pool heater h series

When i turn pump on with the heater thermostat off it runs fine.when i turn the thermostat on heat it fires and starts heating.then it will start making noise like there is a rock in the system.it will quit making rock noise and then the heater will fire again....this happens over and over and over

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  • jamesdob870 Apr 24, 2009

    almost the same problem...burner starts fine but goes out after short while but blower keeps running w/o reigniting burner...7 yr old took filter out to make sure water flow high no change...

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The issue is a broken baffle in the system. there is a baffel that directs water into the heat exchanger and back out into the system. The welds that hold the baffel in place have broken off. It can be repaired if you take the unit to someone with a mig welder and have them re-weld it (muffler shop, mechanic?). there needs to be a weld on both sides. You can see the baffel if you remove the unit and look down the inlet and outlet tubes.

Posted on May 25, 2009

  • app_3rp12317
    app_3rp12317 Jan 09, 2012

    I fixed mine with JB Weld - easier than removing the plastic parts for welding. It appears that was what was done at the factory, too, because there are drips unlike one would find in a weld. FWIW.

    I have re-placed this baffle where it was originally. Banging is much reduced. . . but persists. I'm quite surprised, now. Not sure what else to try.

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It sounds like you do not have enough water flow through the heater. If you do not have enough water flow though the heat exchanger you will damage the heat exchanger very quickly. I'm certain this is your problem.

Posted on Jan 24, 2009

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Did you find a solution ? I have the same problem

Posted on May 31, 2009

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