Thanks to all solving my problem.
Iggy: Your troubleshooting info was fantastic. I did not have this info.
armye7 & VinceU: Thankls for confirmation of info.
Problem solved as follows:
1. House batteries were weak. Replaced with new 2 new batteries.
2. Electronic leveling reset when I pressed the 4 diamonds. After that the electronic leveling unit was tested and workded normal in all modes.
Many thanks for the expert information shared by you gentlemen.
What a fantastic service this forum is to us new RV members. This is my first Motorhome and I love it.
Thanks again to all.