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Thread: Hayward H250FDN missing error codes

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    Hayward H250FDN missing error codes

    I am in great need of some help. Got back from vacation and my heater stopped working.
    What I noticed: can not change mode anymore (it is stuck on "STANDBY"). The display
    shows b0, which is fine since it is in bypass - driven by my ProLogic panel.
    What I tried is to disconnect from panel and work as stand-alone. This did not work, since
    I can not change modes...
    Measured the input voltage at the power supply pins and it is 24VAC.

    Next I tried to exchange the Integrated Control Board and there was no change except
    the fact that now I get code "73" when heater is activated from the panel and I do not
    see b0 code anymore.

    I am at a loss on where to find error codes, specifically code 73.

    Could anybody on this forum enlighten me as to where to look for code descriptions,
    or any other advice that would direct me on the right path?

    Failing this, a quick (and expensive) call to a Hayward technician is needed... or maybe not?

    Thank you.

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    In the Industry

    ps0303's Avatar
    Join Date
    Jul 2011

    Re: Hayward H250FDN missing error codes

    This could just be a bad keypad. Does the system give you a SB error code on the display?
    Paul 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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    Re: Hayward H250FDN missing error codes

    Thank you for your suggestion. It might just be a bad keypad. Will see tomorrow. The Hayward service guy is coming. Will let you know of the outcome.
    30K Gal in-ground Vinyl, cartridge filter, two-speed pump

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    In the Industry

    Hayward Pool's Avatar
    Join Date
    Oct 2014

    Re: Hayward H250FDN missing error codes

    Sounds like a bad key pad.
    Hayward Pool Tech
    80+ Years of Technologically Advanced Pool Product Manufacturing

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