Why?

Some of eufy's RoboVac models have top glass that is made of tempered glass. Tempered glass is significantly more durable than ordinary glass, but it isn't unbreakable.

Spontaneous breakage can occur when the edge has already been damaged. It could happen when it’s been cut into smaller panels, delivered, or installed onsite. As years pass by and as different temperatures and elements cause the glass to expand or contract, the stress will cause the glass to shatter. While this may happen suddenly, the root cause is usually due to minor damages on the edges of the glass or the surrounding of the top button.

E.g:

How?

The top glass shell is replaceable if the RoboVac itself works fine when you press the power switch on the top or use a remote. Please contact Eufy Customer Service for further guidance on how to replace the top tempered glass.