Restart HomePod
Restart HomePod when it’s not responding normally—for example, when it displays a flashing white light.

To restart HomePod, unplug it from power, wait 15 seconds, then plug it back in.
You can also try the following:
- Go to the Home app  on your iPhone or iPad. on your iPhone or iPad.
- Tap HomePod, then tap  . .
- Do one of the following: - For a single HomePod: Tap Reset HomePod, then tap Restart HomePod. 
- For a stereo pair: Tap Restart HomePod. 
 - A spinning white light indicates HomePod is turning on.  
If the flashing white light reappears, you may need to reset HomePod.