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Old 07-07-2008, 09:51 PM   #1
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Hello, tried to level coach on a spot this weekend it should have just dumped the front air, and been fine. Front air bags would not dump. Tried to dump all the air by opening the valve in the bay with the air cleaner. Back bags dumped, front stayed full. Anyone know if they are supposed to dump for sure? If they are, any suggestions on what to do to figure it out? TYIA.
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Old 07-07-2008, 09:51 PM   #2
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Alpine Owners Club
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Hello, tried to level coach on a spot this weekend it should have just dumped the front air, and been fine. Front air bags would not dump. Tried to dump all the air by opening the valve in the bay with the air cleaner. Back bags dumped, front stayed full. Anyone know if they are supposed to dump for sure? If they are, any suggestions on what to do to figure it out? TYIA.
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Old 07-08-2008, 08:37 AM   #3
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I can only answer part of your question. Yes, the front air bags are supposed to dump. Opening the valve in the bay will likely not accomplish that. (As you found.) That will bleed the air system, but there are check valves to keep the bags full.

Since it appears to be both front bags, I would suspect some sort of electrical failure in the HWH system, since that should control the bleeding.
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Old 07-08-2008, 12:46 PM   #4
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If you push the reset on the HWH panel that should solve your problem.

Sometimes if there is a power interruption it will cause it to have to be reset

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Old 07-08-2008, 06:30 PM   #5
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Thank you for the replies, I am going out there to check both of those options. Will let you know. I will also check fuses, in and around the area, might be one of those.
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Old 07-08-2008, 07:06 PM   #6
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HWH has auto-level that invokes air dump for (IIRC) 30 seconds then proceeds w/leveling via hydraulic jacks. The auto-dump should put the coach down on the frame.
The HWH pad has an air dump button for manually dumping air; this should open all four air bag valves. Don't know if Apex has an HWH button pad.
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Old 07-08-2008, 08:45 PM   #7
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Checked the wiring in that compartment this evening. See the "Wiring issues" post for what I found. I will check this again tomorrow. I have the APEX, and you level through the silverlear program. In the HYD Compartment, There is not to my knowledge a manual dump button or switch. However, I will take a lot longer look in there tomorrow, since I will have several hours while the tech fixes the Hydro Hot. FWIW - While doing Transfer Switch Wiring Check, I did unkink a HH air supply hose for the shower area, so now I should have better airflow from that register. I am going to pack some fiberglass insulation under the shower to hold in some of the heat better, or at least cut some foam blocks and fit around the shower drain, hopefully this will help.
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Old 07-09-2008, 06:42 AM   #8
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">HH air supply hose for the shower area, </div></BLOCKQUOTE>
In my Apex, that hose runs from the HH heat exchanger in front of the toilet, to the back of the tank compartment, across to the other side of the coach and then forward up to the shower. It must be 10-12 foot or more long and there is no way that little fan is going to push much air that distance. Besides, all the heat is being radiated out into the tank compartment.A really dumb design.

I am thinking it might be possible to route a duct from the heat exchanger and come out in the hallway by the circuit breaker panel, a run of maybe 3 feet.
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Old 07-09-2008, 02:23 PM   #9
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Basil, My heat exchanger for the shower, and bathroom, is located under the sink, or under the cabinet in the bedroom, cannot figure out exactly where.
One Heat Supply Hose, goes out of the HE, and then directly to the shower, so it's run is about 4 feet tops, lots of excess hose, but have not cut and shortened it yet. The other hose runs across the coach to the other side (PS) into the tank bay, and then up to the WC. It's run it at least 10 feet maybe more. I am not sure if any mods can be made to it, to increase the air flow and the heat. It's not winter here, so I have that on the list, but it's way down it.
Thank you.
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Old 07-09-2008, 04:02 PM   #10
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There was some discussion about venting the heat exchanger under the bed for better airflow, it worked for me.

Jim 06 Apex
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Old 07-09-2008, 04:22 PM   #11
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Basil, My heat exchanger for the shower, and bathroom, is located under the sink, or under the cabinet in the bedroom, </div></BLOCKQUOTE>

OOPS, sorry about that. That extra long HydroHot hose run problem relates to the FDQS only.
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