Question about Pentair Minimax NT Heater

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Same Problem how do you replace or check sensor

I have the exact same problem ...and about the same age...
Heter runs for a few minutes then turns off... the IGN light will light up...
Is there a manual available?
How do you replace the flame sensor?

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  • mwnance Jun 26, 2009

    It is a MiniMax NT LN Model 400
    From Pentair Pool 400,000 BTUs

    I noticed what looks like 2 flame sensors. But I do not know how to get them out and clean them.

    Thank You for your help!

    Mike


  • mwnance Jun 26, 2009

    I am in Upland, Ca 91784

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  • Expert
  • 91 Answers

The flame sensor is easly replaced, but easier to just clean. Only use steel wool never sand paper to clean a flame sensor. Post the exact model and I will publish the manual on my company website and post the link for you to download, print, etc.

Posted on Jun 23, 2009

  • Richard Johnson PE
    Richard Johnson PE Jun 26, 2009

    manual for your pool heater can be found here: http://www.pentairpool.com/pdfs/MiniMaxC...

    If the heater runs for a short time then turns itself off it could be a flow switch or temperature limit opening. The manual does contain the wiring diagrams, but unless you have experience servicing these units, I do not suggest you attempt it but rather call a good mechanical contractor to service your heater. If you post your general location, I can recommend a few near you that have good reps and quality customer service.



    Richard

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