Water heater cycles on and off without heating
I have a 2018 Rockwood Premier 2516g and have not any prior problems with the Suburban brand water heater, including the first week of our current trip. But water heater stopped heating water. When I turn the switch inside the camper to "on", the red indicator light lights up for about 7 or 8 seconds, then turns off and I can hear a single little click as it turns off. After 7 or 8 seconds, the light turns back on again with the same sound. This action repeats. I have it turned off right now. Any suggestions on what steps I should take? All other gas-powered units in the camper are working and the LP tank is full. All electricity is working fine. Thank you in advance for your help.