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Old 11-20-2021, 06:11 PM   #1
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'02 Journey HWH Jacks problem...

HWH 310 Series Levelers...

Story is that it was cold one morning, and while fumbling around trying to break camp, I pressed the Off/On pad a couple times. First it came on, pressed the 'Store' button, and then I realized I'd forgotten to retract the slide so I turned off the key switch hoping to stop the retraction.

Got the slides retracted and then tried to turn on the jacks again. No lights on the touch pad. Hmm. Cycled the key switch. Still no lights. The jacks had 'stored' around 4" off the ground with around 4" left to go.

Checked a few things but had to leave with the jacks partially retracted. Was careful to avoid any speed bumps and made it another 600 miles no problem. Can't hear the beep either.

Checked the 40 amp fuse, it's fine. Checked all the fuses at the control box under the dash and they all measure fine.

This is a Freightliner XC chassis and nothing is labeled 'JACKS' or similar. So my question is to any owners of a similar chassis, where is the fuse OR power stud for the jacks? I am thinking there is a battery hot stud that's got just enough corrosion to prevent power getting to the 40 amp fuse but where would it be?

Anyone?

THANKS!
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Old 11-21-2021, 11:46 AM   #2
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HWH Jacks

Possible shut down due to low voltage. Find the leveling module, disconnect the 12 volt leads, make sure that whatever power source you have (engine running or good shore power) for 12 vdc is on, turn HWH controller off.

Re-install 12 vdc wires and turn on.
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Old 11-21-2021, 05:28 PM   #3
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Contact Paul at AZPETE on the Irv2 forum. He works for HWH and can answer your questions. His email is pfmaddox@att.net and his phone number is 602-549-3638. He is a Commercial Member and has posted that his phone is always on, and if not answered, leave a message.

He has helped others on this forum and I am sure he can help you.
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Old 11-21-2021, 09:31 PM   #4
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FIXED!

I pulled the controller out and opened it up. All the fuses were good, all the relay's coils measured good, and all but one of the 20 or so diodes measured good.

The one diode that didn't is a Schottky Barrier diode, 1N5821 rated 30 volt @ 3 amp. I have electronic parts stock and happen to have several 1N5822 diodes which are 40 volt @ 3 amp, same family so same functionality but with higher voltage rating. Replaced that and also the LM555 timer device on that board because it didn’t measure to my liking.

The diode was open circuit so that definitely needed replacing. I didn't find that HWH AP17403 controller listed anywhere so it would have needed to go to HWH's rebuild guy I suppose. It's that black device in the lower right with the 1N imprint.



Anyway, replaced that diode and all is well. The most difficult part was crawling under the dash.
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