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Thread: Laars/Jandy LX400 sensor stud assembly replacement

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    Join Date
    Jun 2014
    Location
    London Ontario Canada
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    2

    Laars/Jandy LX400 sensor stud assembly replacement

    Hello,
    I have an 8 year old Jandy LX400 heater. Water is penetrating high limit switch cavity and corroding switches. I had the brass sensor stud assembly replaced by a gas tech 4 years ago and have to do it again.

    I want to do it myself this time and have the pieces. I have removed top shroud, and header bolts(8). I have to take off header and it is stuck on really well. How do I back it off to access stud assembly?
    I'm worried that by trying to forcefully back it off I may crack aluminum (?) piece on which black header fits. Perhaps should I use a block of wood placed on edge of header lip and tap it out?

    Please help and thank you in advance!

    DKLO

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    ps0303's Avatar
    Join Date
    Jul 2011
    Location
    FL
    Posts
    3,435

    Re: Laars/Jandy LX400 sensor stud assembly replacement

    The pieces are either stainless steel or polymer(Plastic). It should just pop off with a good pull.

    It's a shame you have to replace this again but unfortunately I see this alot on these units and to me if it happens alot, it's a design flaw. At no time should you have to replace a part a like this. There are so many other units out there that this doesn't happen on.
    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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