Dash heater light stays on

[Kinger95]

My dash light on the heater control stays on after key is removed .
Where do i even start to look for problem

[Lowflyer1]

What coach, chassis, model year etc. do you have. I cannot see any info on that. If you put that info in your signature, it will show up on all your posts.
Maybe someone with similar coach can help.

With newer vehicles may be a battery saver that shuts those off in 10 minutes, some 30 minutes and so on.