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Old 09-17-2018, 08:24 PM   #1
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HWH Issue

I cannot get the HWH leveling to engage. The on light comes on, but the light that says the parking brake is not set stays on. I have definitely set the brake, and the Trans is in neutral, but that light stays on and the leveling wonít work...cannot even hear any sounds of anything attempting to engage. The main slide out room wonít work either but I think thatís a result of the jacks not being down, right? The rear slide outs work fine. I would like to troubleshoot it myself but I donít know where to look. I have the print out of the LED legend but I donít know where this HWH module is that has all these lights!
I can take it to a mechanic but Iíd really like to learn how to do these things myself if possible. Thanks for any suggestions.
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Old 09-17-2018, 08:31 PM   #2
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Is the key on accessory or in the run position? I know I have forgot that little procedure in the past.
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Old 09-17-2018, 08:39 PM   #3
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Do you know your HWH system model number. ( 625 ? )

The HWH site has the users manuals available as pdfs .
As well as info for identifying your model .

www.hwhcorp.com

I had a similar issue with my 210 system ; control pad lit up but would operate , traced back to the main system fuse , within a foot of the pump , corroded/overheated fuse , in a "water proof" inline holder , passed enough power to light up the leds in the control pad , but no amps to operate the system.
This is the fuse.
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Old 09-17-2018, 08:52 PM   #4
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HWH Issue

Yes, I made sure that the key is in the ACC position. I also tried it with the generator on and off.
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Old 09-17-2018, 09:05 PM   #5
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It could be a bad parking brake switch which is nomm nt sending the signal to them HWH. I am trying to think of the easy things that could be wrong. It also could as the fuse skip426 mentioned.

Good luck keep us informed.
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Old 09-17-2018, 10:38 PM   #6
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The '04 should have the HWH 625 system. There is a great Service manual available in the Technical Library on the ACA website that will walk you through the process. The HWH control box with all the LED lights should be in a small compartment on the passenger side, just behind the front wheel.

There should be a clear panel on the control box, allowing you to see the LED lights on the board. On my coach, that panel is facing out, and is easy to see. On some others it is facing the side of the compartment, and is hard to view.

If you can narrow it down to something on the control box, you can remove and send the control box to HWH for repair. When I had a problem with mine a few years ago, they repaired it in around a week's time, for about $100. (In my case it was a micro relay.) The price depends on what is wrong. The maximum they would charge at the time was around $500. Much cheaper than a new control box.

Some problems can be traced back to the wiring on the control panel on the drawer. As it pulls out, it can sometimes break a wire.

HWH ml35963 troubleshooting.pdf
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Old 09-18-2018, 11:27 AM   #7
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Still canít find control panel

This is what is in the small locked compartment behind the front passenger wheel. I reached around behind and on the side...there is no plexiglass cover nor any led lights. There is a big metal box labeled HWH in my front basement area, behind a short luan wall. It has all kinds of terminals and fuses but no leds. It is not attached to anything, just kinda hanging there with numerous electric wires holding it in place. But I can easily turn it in different directions, enough to check that there is no clear panel on this part either. What am I missing here?
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Old 09-18-2018, 11:29 AM   #8
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HWH

According to the HWH manual, I think I should be looking at the #35 led light, but still puzzled re where to find it!
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Old 09-18-2018, 12:49 PM   #9
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OK--the biggest challenge for diagnosing issues with our Alpines is that they [WRV] changed how things were done, nearly every model year and sometimes within year. Your rig appears to be an early 2004 as your HWH set up is similar to my 2003. The earlier HWH pump/controller config. had the controller box mounted remote from the pump. Example, mine in on the front bulkhead, under the dash, amidships, behind the radio, HWH console. Other model years had the control box remoted in the basement. Don't think it was until 2005 [?????] that HWH started mounted the control box directly on the pump assembly [behind plexiglass panel]. Accordingly, I don't know if the same diagnostic light process applies to the remotely mounted control boxes??? We all try to help but experience with configs. across model years varies among owners.
PS--the relay that appears to be mounted on the pump manifold is very different from anything I have seen on Alpines????? Might an after market modification?????
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Old 09-18-2018, 02:14 PM   #10
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Thank You

Thanks Old Scout...I think Iím stumped on this one so I will be taking it to the RV doctor. Maybe he can show me how to track this down. Iím not holding my breath tho..iím Beginning to think that no one east of the Mississippi should buy an Alpine because I canít find one mechanic who is familiar with them, or if they are, they just shake their head and walk away! Many times, after reading about fixes on this forum, Iíve had to tell the mechanic what may be wrong and how to fix it. Most of the time they just shoo shoo me, I think because Iím a woman. But here lately, after being right about some things, the mechanic seems to be listening to me a little more!
I honestly think I knocked a wire loose when I took the panels and switches off to redo the trim work. Everything worked until I reassembled it all. So itís probably my fault. Just didnít want the mechanic to try to sell me new HWH panels, etc. before tracing down any wire issues. We shall see!
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Old 09-18-2018, 04:31 PM   #11
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can you post a photo of that box labelled hwh. maybe i can identify it for you. on a 2004, you should have a 625 system, but it appears to have a remote control box.
text me at 1-602-549-3638, or email at pfmaddox@att.net.
maybe i can help.
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Old 09-18-2018, 08:19 PM   #12
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Yes

Yes, I will post a picture within the next day. Just took it back to storage today.
Thanks so much.
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Old 09-19-2018, 04:10 PM   #13
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Pictures

Here is a photo of the front, passenger baggage compartment where there is a short carpeted wall in the center of the coach. I found the HWH component sitting upright behind this wall. It was sitting on its end, with the tension from the short wire harnesses holding it upright. I have tried to lay it on its side so that it is not putting weight on the wires/fuses, but the harnesses are so short that it just kinda hangs in the air at an angle. Does this mean that I donít have the LED array? My coach was built in 03, but I canít remember the month.
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Old 09-19-2018, 06:36 PM   #14
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that is a hwh control box and you have a 610 system. there are no leds. there are directions in the service manual to test this box and touch pad. most of it is done with a 12 volt tester.
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