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Thread: Heat Problem - Display Blank

  1. Back To Top    #1

    Join Date
    Jul 2014
    Ottawa Ontario

    Heat Problem - Display Blank

    Hi there!

    I have a Haywood natural gas pool heater, H250FDN. I've being trying to diagnose a problem with the display as it is blank. The heater itself is functional and running but I would like to see what is actually going on!

    So far, I have checked the four fuses on the fuse board and all are good. I also checked the spade fuse on the main board; it is good too. Any suggestions as to what else to check? Any ideas as to what may be wrong?


    P.S. I did a bit for searching before posting this. Seems most people got an error code. I have not seen one yet.

  2. Back To Top    #2

    In the Industry
    ps0303's Avatar
    Join Date
    Jul 2011

    Re: Heat Problem - Display Blank

    So the display is totally blank but the keys for turning it on/off work? If that is all, then you had a bad display board.

    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.

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