Originally Posted by dkottum
... I don't see any heat adjustments. ...
Most modern water heaters use a small non-adjustable button shaped thermal switch that needs to be in physical contact with the tank surface or over temp can occur. The thermal switch can also be defective. I think mine has a pair of these thermal switches. Have you measured the temperature of the hot water as it comes out of the nearest hot faucet?
Do you observe this behavior in electric or gas mode?
I would ask your dealer to look at it, if they are not convenient, any repair shop authorized to service Atwood (or Suburban depending on yours) should be able to inspect and correct under warranty. I see yours is a 2012 model.