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excess slope light

Camping for the second time with the coach. After leveling all yellow lights out and all was fine. 3 days later I noticed that the excess slope light was on along with the red auto level light. Coach never moved and when I turned the leveling system off and back on the rear yellow light is on and the auto light never stops flashing. The 12 volt compressor was running and after 5 minutes I shut the leveling system off to stop the compressor. Both air gauges are at 0 Does the 12 volt compressor just air the bags or does it have to get the tanks aired up to level the rear?
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: excess slope light

Reply #1 –
I think the excess slope light means you are on a slope past what the system can over come, 4" end to end or side to side. The level system will try to level if it can't it will turn on the light. I carry 4 4x12 blocks just for that. My coach just doesn't work well at the very limits of level.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: excess slope light

Reply #2 –
The coach is on a pad that is almost level. When we arrived and used auto level, it dumped some air in the front and it was level. The coach has not been moved and it took over 3 days for the excess slope light to come on. I am sure it has something to do with the 12 volt air compressor running too long.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: excess slope light

Reply #3 –
We mentioned this while at HWH for a checkup last spring.  The tech allowed that this was a glitch in the computer system??? Process to reset was to 1) turn key to on position, do not start motor, 2) step on brake, 3) take off the park brake...excess slope light should go off. 4) reset park brake and turn off key.  This happens to our coach infrequently, but it occurs usually on a flat, level site.  Weird...
Gary & Gwen
2002 U320 4010 Tag
Build #6032
2014 Jeep Wrangler
Motorcade # 17430

Re: excess slope light

Reply #4 –
@Craneman This is how I understand it. Take it for what it's worth.

You have a small leak somewhere in the leveling system. After 3 days you reach an out of level condition. The HWH wakes up sees it's out of level and tries to level. There is no air in the dry tanks (due to acceptable leak down) and it tries to level using the aux air compressor. It exceeds the maximum time set in the HWH to reach level and throws an "excessive slope alarm". Exactly what it's supposed to do.

Things you can check/do ranked from easiest to hardest.

    • After leveling turn off the HWH (you will slowly go out of level over time)
    • Make sure aux air compressor is working correctly
    • Fix leak in leveling system
    [/list]

    see ya
    ken
    The selected media item is not currently available.ken & dori hathaway & Big Agnes
    🍺1992 U300 GrandVilla WTBI #4150 FOT FBP 2011
    ✨6V-92TA DDEC Parlor Coach 350HP Series 92
    🏁2011 Nissan XTerra Pro-4X

    Re: excess slope light

    Reply #5 –
    Quote from: kenhat –
    You have a small leak somewhere in the leveling system. After 3 days you reach an out of level condition. The HWH wakes up sees it's out of level and tries to level. There is no air in the dry tanks (due to acceptable leak down) and it tries to level using the aux air compressor. It exceeds the maximum time set in the HWH to reach level and throws an "excessive slope alarm". Exactly what it's supposed to do.

    Things you can check/do ranked from easiest to hardest.

      • After leveling turn off the HWH (you will slowly go out of level over time)
      • Make sure aux air compressor is working correctly
      • Fix leak in leveling system
      [/list]


      What Ken said, with some extra.  If you do 1, measure the between-plate height of each air bag over time (and graph it if you're a geek like me).  That will tell you which corner is leaking down and it will help you debug for 3. 
      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: excess slope light

      Reply #6 –
      Leak can also be a leak into an airbag- my coach was "low" on one side regularly when I had air leaking past a solenoid into an airbag.

      Keith Risch from MOT figured it out by hanging a LARGE (1" ID?) diameter flat washer from a string held on by masking tape at each corner of my coach. Washer was set to hang 1/8" above ground at each corner. Leak was found when the low side had not changed, but the high side had went up 1/4". Additional advantage of this approach is that diagnosis does not have to be overnight - once you hang the washers, often you can see the movement and start looking for the problem after an hour or two, since the 1/8" gap going to zero or 1/4 inch is very easy to see visually - much better than waiting 4 hours, 8 hours or overnight to see the trend.
      Tim Fiedler    2025 LTV Unity MBL on Order
      2000 Chevy Tracker 2 Door Convertible 4WD Now lifted 4.5"
      1985 Citroen 2CV6 Charleston
      Murphy Rebel on wheels with 175HP Titan
      Cessna P337
      1980 48' Westport MY (!/4 Share)

      Re: excess slope light

      Reply #7 –
      Is there any HWH air level that works correctly??? Mine leaks in right rear has new air bags all around, no leaks on them at the bag.
      Is there a solenoid that is responsible for the area alone.
      I guess my question is does each air bag have assigned solenoid to operate it ? If so where are they ?
      Rick Maddox
      rlmlimited@comcast.net
      509-939-0740

      Re: excess slope light

      Reply #8 –
      Quote from: ricker –
      Is there a solenoid that is responsible for the area alone.
      I guess my question is does each air bag have assigned solenoid to operate it ? If so where are they ?
      If you wish to understand how the HWH air leveling system operates, I recommend the documents linked below:

      http://www.hwhcorp.com/ml20635.pdf

      http://www.hwhcorp.com/ml11148.pdf
      1993 U280 SE 40' WTBI, Build: 4359
      C8.3 300hp, 6-Speed, Exhaust Brake
      960 watts on the roof (6 x 160)
      Sorento (or BOLT) on a Kar Kaddy SS
      "Nature abhors a vacuum"
       

      Re: excess slope light

      Reply #9 –
      Solenoid failure probably in the rear hwh six pack
      "Riding and rejoicing"
      Bob
      1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
      2007 Solara convertible
      2 prodeco tech outlaw ss electric bikes

      1095 watts solar
      08 Ls 460 and a sc430
      2000 Ford F-250 superduty 4x4