If you are looking for information as to what causes a Solid Orange light to appear on your Sonos devices, there are a number of things that could be going on. The first thing to do would be to review this article here, which talks about
what the different coloured lights on Sonos products mean. Though that article states that the device may be overheating, it may also just be that it is struggling to connect. This might be due to the device not being able to get an update, or just a general connectivity problem.
Try wiring it into your router via Ethernet. Does that then work? Check for updates and run them if necessary. Update or no update, then try unplugging the Ethernet cable (without unplugging the speaker from power).
Does it drop off the system again after you do this, or does it not connect at all via cable? At this stage it would be wise to
contact our care agents via telephone.Try searching our articles for help with your question: https://www.sonos.com/en/support