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Pumps replaced now have a leak from inlet/outlet end of heater


Frog1
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I figured y’all would say that, RD.  Looks like there’s the OEM at 500 and another popular one for 300 aftermarket.  Aftermarket one needs to have a jumper on the board because it has an internal pressure switch and not the original board driven setup? Worth the price difference or stick with OEM? 

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If the housing is not cracked, I would think a new O-ring or new gasket might fix the leak.  If a gasket, and not available, I might try a thin film of RTV on each side of the existing gasket, or cut a new gasket from rubberized sheet gasket from the auto parts store.

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Uhhh... ok. I've never seen a threaded pressure switch with a gasket. Unless you consider teflon tape a gasket.

I have never had one of those heaters apart so can't be sure, but I'm betting a new pressure switch will do the trick. Something like this might work.

https://pool-spa-supplies.com/caldera-spas-pressure-switch-2006-to-current-kit-ps-hohs-06-73995-3331?utm_source=google_shopping&gclid=Cj0KCQjwv5uKBhD6ARIsAGv9a-x2az-UccJqgp_jVnjiZsGKzYIR-x-pnP0Tf0DlwBKEuUDY9jPio70aApacEALw_wcB

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