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    Pentair Minimax NT 400 vacuum problem -E-04

    I have a Pentair Minimax 400 NT heater. It was giving me an E-04. The blower wasn't really moving any air so I replaced it. The heater worked for about 4 minutes and popped the code again. So I changed the air flow switch. No change. I jumped the air flow switch, after the blower started...