This is a
'stop by an rv shop and pay for a tutorial walk through of all the functions and crashes possible'
Situation.
You didn't absorb enough information from the local guy fixing it. You need to be in a 'take notes' situation.
You'll get 100 theories here from 50 people, many of whom don't own your style MotorHome.
Go ask someone who can be hands on, and take notes.
Or
If you're comfortable with it, download the owner manual.
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