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Old 11-23-2022, 08:52 AM   #1
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Location: St. Louis, MO
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HWH Jacks Control Board - Labeling LED Lites - To Assist Troubleshooting

2008 Tiffin Phaeton, 40' Class A, DP, HWH Jacks Leveling System
I have been troubleshooting a intermittent problem with air bags not inflating
The is a freightliner pilot signal dump valve that is driven by a electrical signal from the HWH system, so I've been doing a deep dive on the HWH system.
On my coach there's a side basement door with the HWH control board, the hydraulic pump and solenoid valves.
The HWH control board is behind a clear plexiglass cover. The HWH manual explains what most of the various LEDs on the board mean
During a crisis, hunting down the HWH paperwork and then toggling between the paperwork and the LEDs is slow.
Therefore I decided to use my label maker with clear label tape to put labels on the plexiglass .... so that during a crisis ... when I'm troubleshooting ... I can in real time see what the LEDs are telling me to hunt down the root cause of the problem. SEE ATTACHED PHOTOs. I tried to get rid of the reflections on the pics, but did the best I could.
The LEDs tell you what is going on with the HWH system to the greatest extend possible.
I labeled the main LEDs that the manual lists. This isn't perfect but it does enable me to easier troubleshoot without going back and forth to paperwork.
This may seem like overkill but when your having a crisis ... like your air bags wont air up and your air bags won't dump ... the labels will be appreciated.
I also put yellow labels at the top, providing instructions for manually retracting the jacks if the system fails. Researching this prior to a crisis will help make the crisis less stress full. The label tells which solenoid is which and the tool need to release the solenoid.
I hope this is of some value to others.
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Old 11-23-2022, 09:02 AM   #2
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Great idea! Thanks for sharing!

And FWW - my experience with the label maker tape is they use a latex adhesive on the back. It will fail after a few years if not months.

See if you can locate a full sheet of adhesive backed clear that they use an acrylic adhesive and overlay what you’ve done to keep the labels in place.
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Old 11-24-2022, 09:51 AM   #3
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another idea is to call me. 602 549 3638. if its hwh, i can help 90 percent of the time.
i do have access to almost all service manuals from 1967 on till now.
if you need a service manual, text me your email address with brand of coach, year, model, and what system you have on your coach.
i dont know everything, but i have access to those who do.
i can also help with diagnostics. i am available most of the time, except at 2 am, like some in england assume.
if i dont answer, please leave a phone number and a message. i do not call back on hangups. i already have a warranty on my car, a medicare advantage plan, and dont buy medical supplies from india.
but, really, i can help.
paul maddox
502 549 3638 or pfmaddox@att.net
i work full time for hwh corp. i do not solicit parts sales or service work on this forum.
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