When I put on my park brake and put the motorhome in PARK, I sometimes can't get the hwh system to come on....no red light, no indicator of off-level side or corner. Then, I'm dead in the water, becau...
Does it act the way you describe 1- With engine on and off? 2- In Park and neutral? Also, if foot operated, try a little harder to get that last clic in.
If any of the above works you should have an idea of the problem.