Ive been thu this dog and pony show recently and could not find the shut off to the fridge in the coach .
Shut the main water supply off then I wiped up the water mess and put 2 box fans on all areas to dry for the next few days
I later removed the vent cover on the outside of my coach, I could see the water solenoids for the ice maker and water deep down inside and were dripping and seen the plastic feed line to them right in front of me.
I shut off the coach water pump then cut the plastic line feeding the solenoids on the fridge and installed a shut off in the line
Walla! Cost about $ 2.00 and 15 min
Good Luck!
Happy Trails!