My HVAC fan would not shut off. The HVAC technician diagnosed it as a faulty fan motor control module and replaced it -- a very expensive repair. He said it's a VERY common problem at the Villages due to voltage surges which is detrimental to the low voltage mechanism in the module. I told him I had the SECO surge mitigator, but he said that would not help, but he did offer a special surge protector for the HVAC unit (~$200). I don't know how much of that is upselling and how much is true, but that's my experience.
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