I am an anti-Facon crusader. We had just about every Facon puck light in our 2020 Solitude fail within the first nine months or so (as did one of my "forum friends" on this forum). They are junk, IMHO. I replaced all of ours with this brand:
https://smile.amazon.com/gp/product/B07VPTCW3R/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Haven't had an issue since. As [MENTION=29772]A.Texas.Yankee[/MENTION] said, likely an internal circuit or semiconductor failure.
BTW - you can create a signature block with your RV and tow vehicle information (see mine below). That way you won't have to repeat that information whenever you post or ask a question. You can create a signature by going to:
Forum Actions (on menu bar) -> Edit Profile -> Edit Signature (under My Settings on the left)
Rob