Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 10 of 10

Thread: Hayward h250 replacing hi limit switches

  1. Back To Top    #1

    Hayward h250 replacing hi limit switches

    Hello,

    I have a Hayward H250 and had a service tech tell me I need a new thermostat and hi limit switches.

    I can order the switches and thermostat and do it myself (I replaced the pilot assembly and pressure switch myself last year), the issue is that the hi limit switches come in a pack of 3, and I only see 2 to be replaced on the heater. Where can I find the other switch that needs replaced?

    Any help would be greatly appreciated
    16x32 vinyl
    80,000L chlorine
    21" Hayward sand filter

  2. Back To Top    #2

    Re: Hayward H250 heater, replacing temperature limiter

    Hello, I have been advised I need to change the same switches. I see only 2 of them, and I am not sure off the wiring when I replace them. Is there a site anyone knows of with wiring pictures, as I find the wiring diagrams hard to follow
    16x32 vinyl
    80,000L chlorine
    21" Hayward sand filter

  3. Back To Top    #3

    Re: Hayward H250 heater, replacing temperature limiter

    I have now located all 3 limit switches, 2 of which are automatic, and 1 manual. Now the trouble is the wiring diagram only lists 1 automatic and 1 manual limit switch in the wiring series, so I am not sure where in the series to put the 2nd automatic switch. Any one know the solution??
    16x32 vinyl
    80,000L chlorine
    21" Hayward sand filter

  4. Back To Top    #4

    In the Industry

    ps0303's Avatar
    Join Date
    Jul 2011
    Location
    FL
    Posts
    3,436

    Re: Hayward H250 heater, replacing temperature limiter

    Depending on your model of heater you may only have two of the three in the package. Replace them according to what your unit currently has. Some units have one in the bonnet, others have two.

    The High Limit is located on the header on the back. If you are looking to replace that. It's a completely different part from the limiter switches.
    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,

  5. Back To Top    #5

    Re: Hayward h250 replacing hi limit switches

    Hi, I too have a hayward h250 which gives me nothing but grief every year.
    Mine has 3 switches, 2 side by side which are behind my gas pipe, and there is another switch
    on the very bottom between the 4th and 5th burner.

    How cheap have you found the set of 3 switches for?
    I think I might be needing a pack myself

  6. Back To Top    #6
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Hayward h250 replacing hi limit switches

    There have been quite a few variations of the H250 over the years. I wouldn't be surprised if they don't all have the same number of limit switches.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  7. Back To Top    #7

    Re: Hayward h250 replacing hi limit switches

    I have found the switches for $50.

    I have those 3 as well. I am going to order them and replace all 3. My issue is doing the wiring. The wiring diagram only shows the wiring for 2 limit switches, doesn't show how the 3rd should be wired.

    Any gas fitters out there with an answer to that issue??
    16x32 vinyl
    80,000L chlorine
    21" Hayward sand filter

  8. Back To Top    #8

    Re: Hayward H250 heater, replacing temperature limiter

    How should the 3 switches (I have 3 in my model) be wired? The wiring diagram only shows 2 in series (first the automatic then the manual) but I have a 3rd switch which is manual.
    16x32 vinyl
    80,000L chlorine
    21" Hayward sand filter

  9. Back To Top    #9

    Re: Hayward H250 heater, replacing temperature limiter

    sorry! third switch is the bottom one between the 4th and 5th burner tube and it is AUTO, NOT manual
    16x32 vinyl
    80,000L chlorine
    21" Hayward sand filter

  10. Back To Top    #10

    In the Industry

    ps0303's Avatar
    Join Date
    Jul 2011
    Location
    FL
    Posts
    3,436

    Re: Hayward h250 replacing hi limit switches

    Quote Originally Posted by Haezeus
    I have found the switches for $50.

    I have those 3 as well. I am going to order them and replace all 3. My issue is doing the wiring. The wiring diagram only shows the wiring for 2 limit switches, doesn't show how the 3rd should be wired.

    Any gas fitters out there with an answer to that issue??
    All you are doing is just pulling the two wires off the old and putting them on the new. You're not adding anything new that isn't already there. So find the first one, pull the two wires, plug them onto the new limit and put the new limit into place. Simple as that. No wiring diagram needed.
    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,

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •