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Thread: Propane Heater won't ignite.

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    Propane Heater won't ignite.

    I have a 15 yr old Teledyne Laars 250K BTU heater. It has always taken 5-6 times to lite off initally since it was new. Last fall I ran the tank completely empty. I had the tank filled this summer but can't get the heater to ignite. I can hear the ignitor clicking (presumably sparking) but the sound is not as loud as it was in years past. Only thing different this year was the addition of SWG. Any suggestions???
    10,000 IG vinyl liner pool, Hayward sand filter, Hayward SuperPump (converted to 2-speed), BBB user

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    Join Date
    Apr 2007
    Ft Lauderdale, Florida
    Turn your gas off and remove the front access panel. Check for spiderwebs around the oriface fittings and the spark igniter.
    This will all look like the gas assembly of your bbq grill. There are several tubes that the gas runs through. At the beginning of the tubes, there is a header pipe, in which the oriface fittings are located.
    Then look for the spark assembly that looks like the spark igniter of your bbq grill. With the front panel still removed, don't turn the gas back on yet, but see if the spark igniter is sending a strong spark. If not, check and make sure the igniter wire is not too far away from the metal that allows the spark to ignite the burners.
    Once you confirm this, turn the gas on (with the front panel still removed) and see it the unit sparks and starts up.

    If you are able to confirm these, and you're not getting the heater to start up, you may have a problem with one of the safety components (high limit switch, water pressure switch, fusible link, etc). Most of these you can short to see which is not working properly, but unless you are comfortable with working with eletronics and a highly combustible gas, you may want to have a professional pool company or the gas company diagnose it for you.

    Gas heaters can be, and are very dangerous if there is a problem and you don't know what you're doing, so please be aware there are some inherent risks involved if you decide to work on it yourself.
    Sean Assam -
    National Accounts and Commercial Products Manager
    AquaCal Heat Pumps
    AutoPilot Salt Chlorine Generators

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    Thx for the info Sean.
    10,000 IG vinyl liner pool, Hayward sand filter, Hayward SuperPump (converted to 2-speed), BBB user

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    Join Date
    Mar 2007
    Coastalish 'down easter'
    When we have 'microvolt' heaters not fire for us (**and yes, I do things that would have an OSHA inspector have kittens to light them **) we have the pool owner call their gas company and let the 'pros' handle it -- it's just safer
    Luv& Luk

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

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