Yesterday I wanted to pull the blocks and lower the coach. When raising the coach
to pull the blocks the indicator lights was going from excess slope to the operation
indicator and I was hearing a clicking noise from the level sensing unit. When the
excess indicator light was on it didn't raise.
I believe the excess slope indicator on the pad is only a timeout indicator that the system could not level itself within a certain number of minutes. The pressure switches on the six pack can inhibit lowering if it already believes one front corner is already fully lowered. The level sensor drives the high corner indicators on the pad and is used for auto leveling.
HWH Air Leveling Textbook (http://www.foreforums.com/index.php?action=media;sa=item;in=1458#viewitem)
I would try the HWH reset switch first if you have one of those. Maybe it got into some confused state and a restart will help.
I don't think I have a reset switch. Maybe it just needed time as I went out this
morning and everything was working the way it's supposed to.