I don't know if this will help you, but we had a similar problem in our previous trailer... I eventually traced it to a low battery in the remote.
(When the supply voltage gets marginal, consumer electronics can do strange things)
As a simple test, if you have a remote, take the battery out completely, and see if the problem continues.
IanP, the man from Scotland
Jay Feather 19XUD, pushing a Jeep Grand Cherokee