clunking sound

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    Sta-Rite Max-E-Therm 333 - Knocking Sound-> Shut Off

    Hello All, I've been reading through posts, and want to thank everyone who is helping guys like me out! It's a real pleasure to find a helpful forum. I have a Sta-Rite Max-E-Therm 333 Pool/Spa heater which came with the house I purchased in 2019. The heater ran fine all last summer (spa...