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Old 12-23-2007, 04:52 PM   #1
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The last time we had the motorhome out (in October) we noticed that the coach was not level after my typical set-up procedure. This was a family get-together with kids and grandkids running everywhere and I got distracted and never looked into it because we were on a very level site and it didn't pose a problem.

The coach has been sitting in the back yard since that trip and I notice that I cannot level it like I used to do. The only time I can get it good and level is with the engine running with lots of air pressure. However, when the engine is shut off (with the HWH system still on) the coach gets out of level every time nowadays.

If there is an air leak I would not know where to begin to look. Any suggestions? We're planning to head for the Rio Grand Valley in a couple of weeks and I sure would like to have this corrected before we leave.

Thanks.
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Old 12-23-2007, 04:52 PM   #2
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The last time we had the motorhome out (in October) we noticed that the coach was not level after my typical set-up procedure. This was a family get-together with kids and grandkids running everywhere and I got distracted and never looked into it because we were on a very level site and it didn't pose a problem.

The coach has been sitting in the back yard since that trip and I notice that I cannot level it like I used to do. The only time I can get it good and level is with the engine running with lots of air pressure. However, when the engine is shut off (with the HWH system still on) the coach gets out of level every time nowadays.

If there is an air leak I would not know where to begin to look. Any suggestions? We're planning to head for the Rio Grand Valley in a couple of weeks and I sure would like to have this corrected before we leave.

Thanks.
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Old 12-24-2007, 02:12 AM   #3
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If I understand you correctly, you cannot level the coach at all, even for a short period of time with the HWH system. If this is true you may not have as much of an air leak problem as an HWH system leveling problem. Suggest you start at all the HWH electrical connections to be sure they are good. Also check the grounds at the chassis side of things. Let us know which HWH system you have and we may be of more help.
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Old 12-24-2007, 06:39 AM   #4
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My 2000 Allure had a leveling problem also. The system said it was level, but it was not. On my way home from a trip west, I called HWH and got an appointment to have them check the system. They found the electronic control module was bad. They replaced it with a new and improved unit. This was done last year, way out of warranty. They only charged me for labor for this work. HWH is a great place to do business. They treat you well, buy you lunch, and keep their appointments. I highly recommend them.
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Old 12-24-2007, 10:25 PM   #5
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Sorry for not making myself clear enough. Not only do I not know how to spell suspicion but I apparently do not make much sense either.

Most of the time the leveling system will level the coach just fine but only while the engine is running or immediately after engine shutdown. When there is plenty of air pressure in the system. I use the phrase "most of the time" because once in a while the panel will indicate that the parking surface is sloped too much to achieve a good level when I know the surface is not sloped much at all.

For this discussion let's say that both the HWH read-out panel and my plumber's level tell me that the coach is level. All four red LEDs are lit and I have heard the air bags either fill or deflate to achieve a level condition. This level condition only lasts for several hours and one end of the coach has lowered to an un-level condition. It seems to me that I used to hear the electric compressor in the bay under the driver's seat come on from time to time to maintain the level of the coach. I don't hear that motor any more.

RV Wizzard - You said "grounds". Do you think there will be more than one electrical ground from the HWH electronic control panel? How about other places to look for good grounds?

As soon as Christmas is over I will get out to where my coach is garaged and get more info on the HWH model and do some hands-on troubleshooting.
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Old 12-25-2007, 06:38 PM   #6
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You could have more than one ground; probably one a the pump and motor assy and another near the control board(s). You may want to check the ground at the battery bank while your at it. This means that the frame of the chassis will be the conductor for the negative side of the circuit for this system. Check the positive side too for connections and/or blown fuses. Let us know what you find.
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Old 12-28-2007, 08:56 AM   #7
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I don't even try to level without the engine running. There is is a small vacuum pump under the drivers seat that tries to do the job when the engine is off but it's very slow.
Sometimes when we are parked, one side will show it's low but I ignore it unless the wife complains. Then I just lower the other side. You don't need the engine to do that. Just lower in manual mode.
The sensor for the leveling system that detects an out of level condition is possibly not that far out of level.
All air systems leak. There are a lot of different seals in the system. They don't make a perfect seal. If it leaks too quickly, you need to have it looked at. I lose about 12 lbs a day from my air system when parked.
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