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HWH

The HWH leveling system is unleveling the coach. While parked in the garage and testing the leveling system. When engaging the auto leveling the coach levels and all is good. Returning to the garage the next day the coach is not level and the excessive slope light is on. Switching the system off and engaging the auto leveling all is good once again. Until the next day the same issue returns. The air bags and all six pack valves and solenoids were replaced last year.  I did not have this issue previously and not for 6 months after these parts were replaced.
Rick and Julie
Grand Villa
Build #4689
1995 4000 U280SE WTBI
8.3L 300HP Cummins

Re: HWH

Reply #1 –
I hate to break it to you but you likely have a leak somewhere in the bags or one of the six packs. It's a closed system between those two parts so a leak somewhere else won't affect it.

The only other thing it might be (that I can think of) is a wonky control box erroneously trying to re-level it. Easy way to test is to use the autolevel feature, switch it to "off" and then quickly turn the ignition off (so it doesn't go into travel mode) once it's level and then come back the next day. Or manually level it. If it's unlevel you know you have a leak. If it's still level, you the know computer is going wonky.
1987 Grand Villa ORED
2001 U320 4010

Not all that wander are lost... but I often am.

Re: HWH

Reply #2 –
Quote from: Elliott –
I hate to break it to you but you likely have a leak somewhere in the bags or one of the six packs. It's a closed system between those two parts so a leak somewhere else won't affect it.

The only other thing it might be (that I can think of) is a wonky control box erroneously trying to re-level it. Easy way to test is to use the autolevel feature, then quickly switch it to "off" and turn the ignition off (so it doesn't go into travel mode) once it's level and then come back the next day. Or manually level it. If it's unlevel you know you have a leak. If it's still level, you the know computer is going wonky.
I actually always park with HWH off. This is probably poor practice if I was to develop a leak.

Re: HWH

Reply #3 –
Quote from: Elliott –
I hate to break it to you but you likely have a leak somewhere in the bags or one of the six packs. It's a closed system between those two parts so a leak somewhere else won't affect it.

Agree.  Excess slope light means the system tried to level and couldn't achieve it.

Rick & Julie - can you tell if a corner is lowering or if perhaps a corner is raising all the way (leak through on a raise solenoid)?  The best way to determine this is to measure the height of the airbags when initially level, then again every half hour to see if a corner is increasing or decreasing.  If you have the time, you can also sit in the coach and wait for the HWH system to "wake up" to re-level, and see what it thinks is low (amber light(s) on the control pad).
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

Reply #4 –
I leveled the coach yesterday and switched the system off. This morning the coach was level. If the HWH system is wonky is there a procedure to troubleshoot it? Or is there a particular part that would cause it?
Rick and Julie
Grand Villa
Build #4689
1995 4000 U280SE WTBI
8.3L 300HP Cummins

Re: HWH

Reply #5 –
I'm not familiar with your year coach.  The HWH website has a good selection of manuals with trouble shooting procedures.  I would start there.

Rich
Rich and Peggy Bowman
2002 U270 3610 WTFS, build #5939--"Freedom"
2022 Jeep Grand Cherokee Summit 4xe
SMI AirForceOne brake system
PakCanoe 15
 

Re: HWH

Reply #6 –
Quote from: Rick & Julie –
If the HWH system is wonky is there a procedure to troubleshoot it?
You have the HWH 600 Series Leveling System.  See the manuals below for trouble shooting tips.

https://hwhcorp.com/ml11148.pdf

https://www.hwhcorp.com/ml20635.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"