Talk of The Villages Florida - View Single Post - Can't turn HVAC fan off
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Old 12-04-2023, 06:55 PM
Altavia Altavia is offline
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Originally Posted by MrLonzo View Post
Thank you. This is what it turned out to be, a bad ECM. I had a service call with SunKool who replaced the part, thankfully still under warranty. He said normally it's an $800 job, and another $800 if the motor is bad. It took him about 15 minutes, so it looks easy enough to do if you know what you're doing.

He also told me this is a very common problem in the Villages due to voltage spikes in the electrical line which reaks havoc on the low voltage motor module, and that my whole house SECO surge Mitigator will not protect it. SunKool does offer an HVAC surge protector (<$200 P&L) which should protect against such voltage spikes. I'm thinking it might be a good investment once my unit goes off warranty.
Apreciate the update, good news it was covered under warranty.

As far as I know, the HVAC surge protector is installed at the disconnect box at the compressor. While a good risk reduction for the outside unit, it would not provide as much protection for the blower motor control as a whole house protector.

Those failures are more likely due to infant mortality or a component of a design flaw.