Battery isolator solenoid

Have a 1 year old Sunseeker 2800 GT class C. Every once and awhile the battery isolator solenoid will start switching back and forth. Sounds a lot like morse code. Batteries are all charged up. May be more frequent when it is hot out. Brought the coach home today and plugged it into a 110V outlet just to cool down the fridge. All was normal. Fired up the generator to give it some excersize. Shut it off after a half hour and the noise started. Probably did cycling noise for 5 to 10 minutes than all was quite again. Having a hard time characterizing as it doesn't do it often enough to see under what exact circumstances it does it. Don't really think the generator has anything to do with it because in the past the generator was not running before the noise started. Should I even worry about it? Are these prone to premature failure?