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Thread: Pentair heater makes a high pitched noise.

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    hodapmj's Avatar
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    Pentair heater makes a high pitched noise.

    My Pentair heater appears to be heatiing as it always has, but it has just started making a high pitched noise while heating. The noise appears to be coming from the heaters chimmney. Any thoughts/suggestions?
    24K gal. 22 X 40' Fox Lagoon IG Vinyl, 7' Fox 25 jet raised Spa, Intelliflow VS-3050 pump, Intellichlor IC-40 SWG, Pentair Easy Touch Controller, Easy Touch Wireless Remote, Pentair Legend cleaner w/ booster pump, Pentair 250,000 BTU heater, Pentair Tagelus Sand Filter, & Pentair Intellibrite LED lighting.

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    spishex's Avatar
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    Re: Pentair heater makes a high pitched noise.

    Is this an LP heater? They can start to whistle as the gas pressure gets low.

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    hodapmj's Avatar
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    Re: Pentair heater makes a high pitched noise.

    No, it is natural gas. It seems to be related to the metal exhaust vent on the side of the unit. It doesn't whistle on startup, but as the the unit heats up it seems to start and continue through the heating process.
    24K gal. 22 X 40' Fox Lagoon IG Vinyl, 7' Fox 25 jet raised Spa, Intelliflow VS-3050 pump, Intellichlor IC-40 SWG, Pentair Easy Touch Controller, Easy Touch Wireless Remote, Pentair Legend cleaner w/ booster pump, Pentair 250,000 BTU heater, Pentair Tagelus Sand Filter, & Pentair Intellibrite LED lighting.

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    spishex's Avatar
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    Re: Pentair heater makes a high pitched noise.

    A little noise isn't unusual, but you say this just started? I see some references around to adjusting the gas with the valve on the incoming line (not the heater valve itself but the gas shutoff). Some of those are pretty hard to move, but if you have an easy one that would be worth a shot. It would also be worthwhile to take a close look at your burners and make sure nothing has built up inside them.

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