Make sure the city water/tank fill valve is in the city water position. This valve is in your wet bay. While you are in the wet bay, make sure the bypass valve for winterizing is in the correct position (i.e. Off).
The ice maker will have its own shutoff valve which you can access via the cover on the back of the frig (it's an outside panel).
Roger & Mary
2017 Winnebago Navion 24V (Sold)
2014 Tiffin Phaeton 36GH (Sold)