Re: Hwh air leveling problem
Reply #9 –
You are not giving the HWH system a chance to "do it's thing" if you prematurely turn it off, and then start the engine to level the coach.
To expand a bit on Twig's comment (above) there are several conditions that must be met before the HWH aux compressor will automatically run.
If the engine is off and the parking brake is set and the HWH leveling system is "ON" then the system is in auto-level mode.
If the HWH system is in auto-level mode and one or more yellow lights are showing on the touch panel, then the system will release air from the appropriate air bags until level is achieved. It will continue to do this until one or more corners of the coach are all the way down to the hard stops. At that point, the system can no longer achieve level by releasing air.
The system will next try to achieve level by adding air pressure to the appropriate bags. It will use the pressure stored in the front and rear air tanks to inflate the bags until the system pressure drops below approximately 70-80 psi. At that point, if one or more yellow lights are still showing on the control panel, THEN the aux air compressor will be activated. Depending on the model year of the coach, the pressure from the aux compressor will either go directly to the 6-pack manifolds (bypassing the air tanks) OR it will go into one or more of the air tanks (and from there to the air bags).
Once the HWH system reaches the point where the aux compressor must run, it will continue to use that mode to maintain level as long as it works. If adding air to the bags will not achieve level, then the system will finally give up (EXCESS SLOPE indicator light on).
Topic: Hwh air leveling problem