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Topic: HWH leveling system (Read 589 times) previous topic - next topic

HWH leveling system

On my most recent trip, I noticed that the system when it showed level was not actually level.  Late arriving so did not worry with it.  However during the night when the system would wake up and check to see if it was level it would purge air and then the compressor would kick on for a few minutes.  It did this every time it woke up through the night.  The next morning I reset the HWH and attempted to level again and the same thing so I leveled it manually and then turned the system off and this kept the compressor from coming on.  Anyone have any ides as to the problem?  We did not leak down and become unlevel for the remaining 5 days so I am pretty sure it is not a leak.  With it purging air everytime it woke and then the compressor running, it appears that it recognized not being level eac time it woke and attempted to level but failed to.  Hard to sleep with all that racket going on.
Gerard Caswell
Eunice, LA
2006 Phenix
2011 GMC Sierra P/U 4x4

Re: HWH leveling system

Reply #1 –
You need to adjust the level sensor. A search of this forum and Barry's site Foretravel Leveling Sensor Location will show you how. I also need to adjust mine soon.
Tom Lang K6PG (originally  KC6UEC)
and Diane Lang
2003 38 U295 build 6209
2016 Jeep Grand Cherokee Summit Ecodiesel
still have tow-ready 2006 Acura MDX 
Temple City, California
Motorcade 16681 California Chapter President
SKP 16663 member of SKP Park of the Sierra, Coarsegold California
FMCA F071251
Retired electrical and electronic engineer

Re: HWH leveling system

Reply #2 –
Quote from: lavocat –
during the night when the system would wake up and check to see if it was level it would purge air and then the compressor would kick on for a few minutes.  It did this every time it woke up through the night. 

We did not leak down and become unlevel for the remaining 5 days so I am pretty sure it is not a leak.  With it purging air everytime it woke and then the compressor running, it appears that it recognized not being level eac time it woke and attempted to level but failed to. 

The normal algorithm is to exhaust air from the high locations first, and if that's not enough to get level, then add air to the low ones, so if it does think you're not level, the purge/pump behavior is normal.

It could be the level sensor needs a tweak or, because it sounds familiar, it could be a raise (or maybe travel) solenoid leaking through.  You wouldn't see the coach lowering, because the leak through is from tank to bag, not from bag to exhaust.  You might, however, see a corner raise up over time as the bag fills. 

If it happens every "wake up", which I think is 30 minutes, try to watch the panel to catch it as it wakes up and see which lights are amber (where it thinks it's low).  The opposite could be a potential leak-through, especially on a raise solenoid.  The most reliable way to monitor leakdown/leak-through raise that I've found is to measure the distance between the air bag mounting plates. 
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: HWH leveling system

Reply #3 –
Gerald, a visit to HWH might be in order. Good people there.

Re: HWH leveling system

Reply #4 –
We got a service appt with less than 2 weeks notice.  They open at 7 and have a few overnight spots with electric hookups.  They are right off I 80.  About 40 miles west of Rock Island.  Vist the Rock Island Arsenal, the John Deere Pavillion and the Visitor Center at Lock and Dam #15.  Nice COE park near Lock and Dam #14.

Roger
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN
 

Re: HWH leveling system

Reply #5 –
Actually, they're talking to customers shortly after 6:30, although 7:00 is officially the first appointment. The coffee is ready by then. The shop is open all night, should you wish to take advantage of their plumbing. The day shift starts showing up about 5:30, and the last of the night shift leaves about 0100.