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Air leveling cycling

Yahoo Message Number: 72991
This can't be normal???

I dump the air, level the coach and all is good, but occasionally some air dumps and the compressor brings some portion of the coach back to level. I never notice it being out of level, but even during the night while we're sleeping it will cycle for no apparent reason.

Suggestions?

I'm not loosing air but it seems as if wind, entering or leaving the coach, moving from the front to back etc. will start the dump/compressor cycle.

Is there some sensitivity adjustment I can do?

04 CC w tag (40')
ISL 370

Re: Air leveling cycling

Reply #1 –
Yahoo Message Number: 72992
Mine has done that and I put the HWH panel to manual leveling mode so I can see that there are no unleveling/yellow lights on. In manual mode you won't get any random leveling actions from the HWH. Not a permanent solution, but a workaround to eliminate aggravation.

Larry, 03 Allure, 30856

Re: Air leveling cycling

Reply #2 –
Yahoo Message Number: 72993
O4 CC w tag

My coach would also periodically cycle for no apparent reason but there must be some bleed off. Push emergency stop and it will not cycle.

Dan 2006 Allure 31348

Re: Air leveling cycling

Reply #3 –
Yahoo Message Number: 72995
There's a small level control board for the HWH system in the steering bay. It constantly senses the leveling and makes adjustments as required. There are 4 green lights on that board one each for each direction of out of level. On our bus the mounting of that small board was loose causing it to move excessively. This might be something to check. Our bus relevels too. For example, after heavy rains when the ground gets soft. High winds may cause it to relevel as will water moving around in the tank. You may have a slow leak in the air bag system. Sometimes we'll go for weeks without any releveling and other times it's multiple times in a day. I'd say some constant releveling is normal as long as it's spread out over time. Also if one set of bags is at an extreme this seems to cause more releveling. Good luck.

At 04:06 AM 7/25/2011, you wrote:

Re: Air leveling cycling

Reply #4 –
Yahoo Message Number: 73002
That is a normal feature built into the HWH system. You can check the manual, but if I remember correctly, it rechecks the level every 30 minutes and adjusts as needed. You can just turn the system off after leveling and the self-checking stops. You should check the tightness of the leveling board. there are two adjustments to the board and they are VERY tight; The other possibility is that the entire HWH box is loose on the mounting causing the same effect of movement of the board and re-leveling. btw: the lights on my leveling board are yellow, but just check for the four bulbs that are together in the box on the horizontal board.

Roger Harper
2006 Intrigue
#11990

Re: Air leveling cycling

Reply #5 –
Yahoo Message Number: 73014
Quote from: Roger Harper

> That is a normal feature built into the HWH system. You can check the manual, but if I remember correctly, it rechecks the level every 30 minutes and adjusts as needed. You can just turn the system off after leveling and the self-checking stops. You should check the tightness of the leveling board. there are two adjustments to the board and they are VERY tight; The other possibility is that the entire HWH box is loose on the mounting causing the same effect of movement of the board and re-leveling. btw: the lights on my leveling board are yellow, but just check for the four bulbs that are together in the box on the horizontal board.
Roger Harper
2006 Intrigue
#11990

Re: Air leveling cycling

Reply #6 –
Yahoo Message Number: 73057
Once an hour, your HWH leveler will fire up and want to make things perfect. With different pressures in your airbags, and air temperature changes, it often wants to make a tweak. Much more noticeable in hot climates that cool down substantially at night. I suspect that the system is sensitive enough that even weight changes (ie. from two people up front in galley while initial leveling, to having dinner on one side of coach, to bedroom at back of coach) can also be enough. Or maybe I'm imagining things.
I usually let it adjust at least one more time after the initial level, then hit the 'stop' button and it's off for good. Must be done while leveler is turned on, it shuts itself off after a couple of minutes. Turning the ignition on will let you hit the top button to turn the leveler on again if you choose.
I'm sure any neighbors etc. will be happy to not hear your airbags hissing and the compressor running once an hour in the middle of the night...