Hi community. I have a tech issue with my HWH. After several hours driving, I got some messages on the display coming from HWH. It starts usually with "Low Level Warning". Than it shows sometimes "Connection Lost Tag Axle". If i slow down to about 10-15 mph, the pillows in the front are fully pumped up. The rig almost jumps around because the air bags are absolutely firm. The HWH says, all is in normal level???? My tasks are resetting the system. After a view resettings, the system starts to work properly again. On some days I do not have problems, on some days it comes up over and over. HWH refuses to call me back after weeks of doing calls. Any ideas? See pics.
Not sure what coach you have but guessing from the pictures you have a newer coach on a Spartan chassis and have HWH's active air system.
If you go to "My Account" in the upper right it will take you to a page where you can enter your signature. There you can put your coach information that will help everyone know what coach you have.
Yes to get HWH to give you a call back in a long wait.
To trouble shoot your problem may not be an easy and will take some time since it is not all the time. I spent around a year fighting my Active Air system when it was acting wacky. The problem I had is no one knew much about them. When I talked to HWH they did not have answers to some of my questions when I was trying to figure out why the system was not doing what I had thought it should be doing.
I am going to send you a PM with my phone number. I will be able to talk you through a number of things to check and do when the system starts acting up that will help to figure out what is going wrong.
Zampano,
WELCOME!
Please tell us what coach you have.
Better yet, put in an your signature (see post above for example).
Makes getting answers more accurate for your particular coach.
Thanks, Jack. I'll call you.
Had some time figured I would post the Active Air basics and to what to check while driving when the AA starts going wacky. I have included the manual for you to read over.
Here is some background
You can press the stop button ANY time (does not mater if you are going down the road) and it will shut down the computer which should stop all activity until you restart or you press the reset button.
You can press the reset button ANY time even going down the road. You will get a message to press the HOME button and it will reboot the computer. I have had to do this many time driving down the road when things were going wacky
You can adjust the pressure in each bag from the schraders valves which are accessible from a compartment. In my coach they are in the same compartment as the aqua hot. From these valves is a direct connection to the control block for each bag.
Your coach has total of 3 ride height sensors. 1 in the front, and 1 at the right and left sides of drive axle.
The tag axle air pressures are decided by the HWH computer based off what the 3 sensors are reporting back to the computer. Each height sensor has set values of Max High, High, Medium (This should be normal ride height) and low. If you go and look where all of the HWH equipment is located you will see a lot of LED lights on, off, or flashing. These lights are reporting what the computer and sensors are doing.
Each front air bags has a raise and a lower valve The raise only lets air in and the lower only lets the air out.
The drive Axle has total of 4 bags There is an air line going from each bag to the drive axle manifold assembly. The two on each side are connected together so both bags on each side should have the same air pressure. Each side of the drive bags has 3 valves, 1 lower, 1 raise, and 1 high volume raise
The tag axle is like the front axle with each side having two valves 1 raise and 1 lower.
From the HWH display and keypad.
Check the pressure page and see what the pressures are at the different bags.
(this is a good one to look at just to get familiar as to where pressures are when you are sitting and driving. )
In pulling up a picture of my pressure page, which I am thinking I was just sitting still the reading were
LT 91 LD 66 LF 98 System 127 RF 98 RD 75 RT 85
Yours may be different.
Other page to check is the "Status page 1"
This page shows you what the computer thinks is going on with the different ride height sensors. If you look at the page you will see
FT Sensor status,
LR sensor status,
RR sensor status,
L_Tag Sensor Stat,
R_Tag Sensor Stat
Remember there are only 3 ride height sensors. You can try to find the two for the tag but there are none. The computer just makes the Tag's height up.
While viewing this screen all locations should be showing you one of the three. High, Low, or Changing What should happen is the computer will add air to the bags if Low, release air if High and do nothing if it says changing. I have tried to get HWH to explain to me why sometime it may be high or low for a while and it looks like nothing is happening. I have not gotten a good answer to my question. When your coach starts going wacky you will need to look at this screen and see what it is showing. It is also interesting to watch also while just driving to see what is going on.
When you press the page forward button it takes you to the "Status Page 2" This page should be telling you what should be happening with the air valves/solenoids. Let say the LF Air Solenoid is saying "RAISE" then the one solenoid that is used to raise the left front should be on and letting air in the LF bag. If is says "LOWER" then the one valve for releasing air should be open and letting air out of the bag. If it says "OFF" then both valves should be off. While you are driving down the road you will see the status change as the computer decides to add or remove air from the different bags. When your coach is going wacky you should also take note of this page as to what it is showing.
In my coach the right rear was rising up like you were saying your front was. One of the tests I did was when it was acting up, sitting still with the engine running I went to the Man Air > Dump button and let all of the air out of the bags. I then went to pressure page and checked to make sure I had let all of the air out of all of the bags. I then sat there watch the right drive bag air pressure increasing, then went to the "Status Page 2" to see if the computer was trying to put air in the bag and it showed off. I then knew I had a leaking valve. James at FOT told me that if I have a valve leaking I can try raising and lowering that bag and it might stop leaking, which when I did it stopped the the moment. I did not know if it was the High volume valve or the regular rise valve so I replaced both.
I had asked HWH when they called me back Why, but the answer was an engineer would have to answer that question. Question was, with the leaking rise valve adding air to the bag, and the height control sensor was showing High, why was the computer not activating the lower valve to let the excess air out.
Great write up. That's been on my list to start the learning process on the leveling system and ride height. I'm assuming that no matter how much tongue weight you have. The coach will ride at the same ride height.
Yes, it's a mechanical arm that holds an air valve open until the bags inflate to the correct height (on your coach, not sure about the OPs). The horizontal position of the arm moves as the bag inflates (or deflates) and once it reaches the correct height, closes the valve. If you go too far in the other direction it opens a port that allows air to dump from the bags, again moving the arm until it closes the valve.
If you have HWH Active Air the system is all computer, and air valves. No mechanical height adjustments devices. The electronic height sensors tell the computer what is going on and the computer then tells the different valves as to when they need to open.
The coach should always ride at the same the same height, no mater what you add or subtract from it. On the HWH display it tells you what the PSI is in each bag. If you take where the drive bags were at LD at 66 psi and RD at 75 psi, my bet is if I was to weigh the coach the right side would be heaver then the left side and if my father-law was alive today he would be able to tell us how much weight was on that right vs left dual tires.
The above is totally correct if the system is not Active Air. If you have Active Air, then there is a mechanical arm that is attached to an electronic sensor that sends the information as to where the position is to a computer to determine the amount of air to add or delete from the bags.
One of the neat features (If is working correctly) of Active Air (AA) is when you are in a turn the HWH computer will add air to the outside bags and keep the coach from leaning. A friend of ours that has a 45' Cornerstone and travels with us all the time, has told me that when he sees me going in a turn he will slow down since he does not like the A S%%%i& moments when his coach is leaning in the turns.
If you have a side wind the AA will adjust the bag air pressures where you barely will feel the wind. Most time you will not even know that there is a cross wind.
Im going to have to check my bay and see if I have the active air. When we were in North Arkansas going to Branson I never noticed any body roll on any of the switch backs but that could also be for the fact I was traveling at a snails pace lol. Did I mention there was also ice on the roads. Im assuming the computer is in one of the storage bays?
It may be easier to go pop open one of the bays next to your rear airbags and look for the mechanical ride height valve. I'm pretty sure you have them, because I saw them on Keith Hudson's coach of a similar vintage
Probably can just look in the rear wheel well. Look and see if the height control device has wires or air lines going to it.
Even easier way is do you have one of the attached picture on your dash or side panel. If you do, then you have Active Air.
Looks like I dont have it. I do have the mechanical ride height valves behind the rear tires. Coach rides great and no body roll in the curves but it does seem to stay level all the time or that Ive noticed.