radon fan not working 2

https://myradonmanometerreadingfocus.greyhavendaily.com/posts/what-your-radon-manometer-reading-actually-tells-you

The radon fan in our basement started making a weird humming noise last week, and now it's completely dead. I first noticed the issue when the radon monitor showed high levels, which is scary given the health risks. I tried resetting the breaker and checking the wiring, but no luck. Looks like I need to call a professional to get it replaced before the radon builds up again.