Hey Al P
Find the water feed line to the fridge and put 30 psi of air on it.
Run the fridge cool water line until air comes out.
Cycle the ice maker until the same happens. You need to get the water out.
The heat on the inside of the coach may not keep the lines and solenoids from freezing.
I hear it gets cold in Ohio.
Besides, you shouldn't pay for the electric to heat it all winter.
Your dealer should be able to get instructions from FR and tell you how to do it.
Contact April at FR she may give you them.