Jerry,
There are basically four major things to look at. The first is the freezer. It must be getting cold enough to make ice. Check it with a freezer thermometer. It should be around 0 F.
Second is the water supply. Obviously, you must have water pressure in the coach. Check to see that water is actually getting to the electric water valve. It could be that a valve is closed somewhere up line or a tube has become kinked. There is also often a filter or screens that can become plugged.
Third is the ice maker it's self. The wire extending over the ice bucket should be down. The ice maker should do several things. It should sense when the mold has become cold enough for the ice to be frozen. It should then start a small geared motor that turns slowly, like a clock and it should also start a heater that will melt the ice slightly to release it from the mold. The motor is attached to fingers that will push the ice out. The motor just sits there, turned on, with pressure on these fingers until the ice releases.
Once the ice releases, the motor continues to turn. On the front of the ice maker, under a pop off cover, is a gear with cams on it. The motor turns the gear as it pushes the ice out and the cams operate some micro switches. One of these switches turns on the electric valve and allows the ice maker to refill with water. This switch can usually be adjusted with a screw to alter the size of the cubes by changing the amount of time that the fill valve is open.
To trouble shoot the ice maker you need to listen to see if it is running. If it is getting cold enough, there is power to the plug on the ice maker and the motor is running OK, you should hear it run every hour or so, water or no water. If it is not running, unplug it (there should be a plug on the wire coming out of it, perhaps stuffed into the hole where the wire comes out of the freezer wall) and check to be sure that you have 120 volts at the plug. There will be three or four wires, so just trial and error till you find voltage.
If you have voltage and the motor never runs, buy a new ice maker.
The fourth thing is the electric water valve. If there is water to the valve and the ice maker motor is running but there is never water in it to make ice then the valve might be the problem. It might also be the micro switch in the ice maker or wiring between the two. It will take some easy electrical analysis to pin point the problem.
Let us know once you zero in on the problem and we will try to guide you through additional testing.
