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I have a leaking check valve that leaks back into my pool when i run the spa. I am new to the plumbing side but think I have the right areas to make the cuts and what i need to replace. Can someone take a look and see if this looks right. The pool return is on the left side and the spa return...

My 406A has had a rattling noise in the header. It shuts itself down and I suspect the Unitherm Governor or bypass or both is the problem. I can't get the square retainer bolt out. Any suggestions? It is not in that bad of shape but had Leslie's pool come and he had a simple crescent wrench...

I have a 406A399k BTU natural gas heater. I have replaced high limit switches, pilot assembly and have a good circuit board. (new) I turn on the heater it works for about 5 minutes then cycles. the gas shuts off, no error and then it sparks and reignites for about 1 minute or less then...

I have a 2006 Raypak 406A with a new board that is having problems firing up(in pretty good shape- enclosed ). Sometimes it does- but mostly it just has these two error codes. Especially when it tries to refire after it has heated the spa from a cold temperature. It will heat for hours with a...