radon fan not working 4

https://radonfannotworkingdigest.summitquill.com/posts/what-to-do-when-your-radon-fan-is-not-working-a-homeowner-s-guide

I noticed the radon fan in the basement stopped making its usual humming sound, so I checked the control panel and saw the warning light blinking. I'm worried because the system is supposed to run continuously to keep the air safe, and now I have to figure out if it's a power issue or the motor itself.