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I have a thermoflow electric heater it will heat my spa up to 98 and them makes a constant squilling sound for a few min and the heat pump shuts off it dose not throw a code

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: The heater makes a banging sound after the burners

What you have is a water flow problem. The water should be going through the heater but it is by-passing it. The water inside the heater is boiling and trying to expand as steam that makes the banging sound. Their is a internal by pass in the water manifold on the side of the heater. If you take this apart you will find a disc on a spring contraption, if it is stuck open the water goes past the heater but still has pressure to kick the pressure switch and fire the heater. Either clean or replace this assembly. The other thing to check for is an external by-pass. This will be a gate valve bridging the inlet and outlet pipes. If you have one of these it should be 80-90% closed or the water goes through it and creates the same problem. This is not on all systems so don't be alarmed if you don't find it. Good luck.

Posted on Mar 29, 2010


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