Check your main 120 breaker panel. Turn OFF every breaker and then turn them ON. Do NOT just look at them and decide they look OK. A breaker can trip but still look ON. It takes one of your breakers to supply power to the EMS board and you also require 12 volts which you have since the EMS panel remote is ON. When you are on Gen set, the 12 volt signal from the Genset hourmeter tells the EMS you are on Gen Set and the remote EMS panel should indicate GEN. But, I have never tested for this if the supply 120 breaker has tripped. Also, try disconnecting from Shore and Genset, shut the battery disconnect switch OFF for the Coach and restart IF the above does not fix the problem. Doug