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Thread: heater whining and sooting

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    pakrh8r's Avatar
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    May 2013
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    heater whining and sooting

    I have a Hayward H1501 gas heater that earlier today I fired up for the first time this season. It is ony 2 years old. It was making a whining/whistling noise and the top of the chimney part (not sure what it is called) has black soot on it. Is this what is called "sooting"? Are both of these issues related and caused by low gas flow, or is there another issue that could be causing it? Will this damage the heater, and what can I do about it. I've tried to attach a couple of pics so hopefully you can see what I am talking about. Thanks.

    [attachment=0:2bs3ocf0]heater1.JPG[/attachment:2bs3ocf0]
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    5500 gal. Plastimayd & Vynall AG (12' x 18' oval), Hayward Swimpro Voyager Cartridge filter & pump, Hayward H150 heater
    TF 100 Test Kit, converted to BBB in 2013

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    ps0303's Avatar
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    Jul 2011
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    Re: heater whining and sooting

    Pretty sure you have a clogged burner or maybe more. Open the front panel and inspect the burner tubes for something that might have clogged them up. Here in FL we have mud daubers that love to make their home inside the older Haywards. When the burners get clogged up it causes the unit to burn bad. The job to clean the unit is a very messy job.

    You will need to clean the unit. Shut off gas, turn off power to unit if it is electronic, remove burner tray, clean out clogged burners. Now with the tray removed, get a hose with a nozzle on it. Remove the top of the heater and spray down thru the top to get the soot off of the heat exchanger. Once you start spraying you will see tons of black powder substance, soot. Be careful, the soot is nasty and if you get it on your clothes you will not be happy. Spray from the top for a decent amount of time. Then set the top back on the heater and take the hose and put it up in where the burners go and spray up into the heat exchanger. Be careful as more black soot will spray out the top. I suggest you put a towel over your head or you could get a bath on black water. Again spray for a decent amount of time. Then remove the top and spray from the top down one more time.

    Now that it's all clean you can put the burners back in, hook it all up, put the top on, and fir it up. hopefully you have the problem solved. Now if it knocks and bangs or sounds like gravel when it heats up, then the bypass is broken and that's another story.

    Good luck.
    Paul
    http://www.gastekservices.com A word of caution: When working with gas and electrical you might want to consider a licensed contractor. Consider the value of your life and others around you. If you would like to provide a review of the help I provided, please use the following link to leave a review. gastek - Google Search,

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    pakrh8r's Avatar
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    Re: heater whining and sooting

    Thanks for the advice. I think I had a combination of a clogged burner and gas tube that runs from the gas valve to the pilot. I followed your instructions first and cleaned out the burner tubes. They weren't too bad but I did see a spider web in one. Then I removed the top of my heater and cleaned out the high wind vent and heat exchanger. There was tons of soot on it and it took a few cycles of squirting from the top then bottom to get it all. Once I had it all back together I tried to light the pilot and noticed it was very small. It also wouldn't stay lit when I turned on the heater. After screwing around with that for a while I removed the tubing from the gas valve and blew it out with my compressor. When I put it back together and lit the pilot it appeared even larger than it did when I originally lit it last week. The heater fired right up when I turned it on. I let it run for a couple hours and no whistling or sooting. Thanks again for the help, I think it's all good now.
    5500 gal. Plastimayd & Vynall AG (12' x 18' oval), Hayward Swimpro Voyager Cartridge filter & pump, Hayward H150 heater
    TF 100 Test Kit, converted to BBB in 2013

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