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Thread: Larrs 400k Series 1 heater pilot will not light up

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    Larrs 400k Series 1 heater pilot will not light up

    Hi I am new to this sire but I can not see how to start a post.
    Moved to a new topic. JasonLion
    I have Larrs 400k Series 1 heater and the pilot will not light up.
    I see ignitor sparking and hear pilot valve opening, got gas from pilot tubing fitting on valve but it will not light up
    Thanks
    Fil

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    Re: Larrs 400k Series 1 heater pilot will not light up

    Pilot light will not light up. There is spark and gas at pilot tubing at valve
    What can be wrong

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    Join Date
    May 2007
    Location
    South Central NJ
    Posts
    3,192

    Re: Larrs 400k Series 1 heater pilot will not light up

    sooted pilot openings or a beat flame sensor.

    Scott
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

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    Re: Larrs 400k Series 1 heater pilot will not light up

    I thought the flame sensor only comes into play after the pilot lights up.
    I have been wrong before.
    How do I remove the pilot assembly
    Thx

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    Re: Larrs 400k Series 1 heater pilot will not light up

    Where are the pilot openings and how do I access them
    Thx

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    In the Industry

    Join Date
    Mar 2011
    Posts
    441

    Re: Larrs 400k Series 1 heater pilot will not light up

    Quote Originally Posted by filsua
    Where are the pilot openings and how do I access them
    Thx
    The pilot orifice is located on the pilot where the tube from the gas valve goes into the pilot. Often on older heaters they are so corroded onto the heater, that you have to replace the entire pilot. If you can remove the brass fitting from the bottom of the pilot, you can look up into the pilot and see the orifice. If you stick a small screwdriver, or wire into the orifice you may be able to remove the clog.
    20X40 30,000 gallon gunite pool

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