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Thread: Hayward H100i Spa Heater

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    Hayward H100i Spa Heater

    I have a Hayward H100i 100,000 BTU propane spa heater. I recently had to replace the blower because the original fan blades had rusted off. The new blower runs fine and the heater heats the spa water. However, the heater runs for only a few minutes before shutting down and it feels very hot to the touch. After a cool down period the heater will start on it own and the cycle repeats. I suspect that the blower thermal switch may not be functioning properly because the blower seems to run at high speed all the time.

    Can anyone shed some light on what the problem may be?

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    Re: Hayward H100i Spa Heater

    I'm sure someone with mechanical knowledge of Hayward heaters will eventually respond but I think it would be of greater value to call Hayward tech support.
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    Re: Hayward H100i Spa Heater

    Great idea, but I can't find that service on the Hayward site.

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    Re: Hayward H100i Spa Heater

    Sounds like a bad thermal switch. Also make sure you have goo water flow as well.

    Not sure if you have it but here is a place where you can look at the manual for that unit.

    http://www.parts4heating.com/Pool-He...ound-s/973.htm
    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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    Re: Hayward H100i Spa Heater

    Quote Originally Posted by Czars View Post
    Great idea, but I can't find that service on the Hayward site.
    Try calling Hayward tech support @ 908-355-7995

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