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Hi all, I'm not really sure how to describe this issue, but hoping someone might have seen this before and can help point me in the right direction. I have an in-ground plaster SWCG pool, and this summer I noticed it would keep developing a brown spot on the wall. I could scrub it off, but it'd...

Hi all, I've got a Pentair Mastertemp 400, and similar to this thread my heater has trouble starting after the rain. The blower comes on, it ignites and heats for 2-3 seconds, and then turns off. This repeats 3 times until it gives up and the "service heater" light comes on. If I turn it off...