Not sure what kind of coach you have or the wiring layout. In the bay there should be a breaker panel that feeds this circuit with the icemaker. It is fed by the inverter and usually contains 4 or so breakers, at least it is wired that way on a 2002 Marquis. If your circuit layout is similar it is unlikely that the inverter is at fault, without more circuiits being affected. I would find that breaker box and turn off and then back on each of the breakers and see if it resets the circuit voltage output. You may want to do the same in the main breaker panel. If that does not work ususlly the GFCI is the first outlet that is fed from the breaker box. I would measure the line in at the outlet and see if it has power at the GFCI. If not open up the breaker box that feeds it and check voltages there. An AC schematic would help a lot to understand what is going on. You may want to request one and see if it available....Hope this helps.
Ed
