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Thread: Laars 125 pool heater will not light

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    Join Date
    May 2014
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    Laars 125 pool heater will not light

    Hi I'm new here,this is my first post I have a Laars 125 natural gas, automatic ignition, pool heater that wont light. It wont make the sound like its trying to light. 2 years ago a service man replaced the pressure switch and left me the jump wire he used to bypass the pressure switch. I tried bypassing the pressure switch but it did not work. The unit is at least 10 years old. Any help would be appreciated,Thanks, Cavy

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    BoDarville's Avatar
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    Jun 2012
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    Re: Laars 125 pool heater will not light

    Welcome to TFP!

    I have experienced this same problem, but only when the heater gets drenched after a heavy rain. Once it dries out, it works fine. Any chance that it's happening to you under similar conditions or is that not a factor in your case?
    Gold Supporter, TFP Lifetime Supporter, 26,680 gal Plaster IGP 3.5 - 10' depth / Attached Waterfall Spa, Manually Chlorinated, Triton Sand Filter, 1.5 HP * 1.1 SF = 1.65 SFHP 1-speed Pentair WhisperFlo WF-26 Pump, 400K BTU NG Teledyne Laars Series One Heater, Polaris 360, Test Kit Comparison, Chlorine/CYA Chart, SLAMing Your Pool, OCLT
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    Casey's Avatar
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    Re: Laars 125 pool heater will not light

    Welcome to TFP.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

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    May 2014
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    Re: Laars 125 pool heater will not light

    No I'm not getting anything its not trying to ignite

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