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Old 05-05-2008, 05:48 PM   #1
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My HWH jack alarm came on while I was doing about 55 mph on a bumpy road in Mississippi yesterday. I felt nothing and pulled onto the side right away and turned on the unit (after remembering to put on the parking parking brake after it wouldn't come on). It showed my right rear light on. I did not get out to check it (wish I had now), but pushed store and it the alarm and red light jack down indicater went off after about 10 seconds). Everything seemed OK, and I have about 450 miles on the coach since the incident. I am feeling OK about it, but was wondering if others had had a sililar problem. Seems to me that the rough road just jiggle somehting loose and it is OK now. Am I right?
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Old 05-05-2008, 05:48 PM   #2
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My HWH jack alarm came on while I was doing about 55 mph on a bumpy road in Mississippi yesterday. I felt nothing and pulled onto the side right away and turned on the unit (after remembering to put on the parking parking brake after it wouldn't come on). It showed my right rear light on. I did not get out to check it (wish I had now), but pushed store and it the alarm and red light jack down indicater went off after about 10 seconds). Everything seemed OK, and I have about 450 miles on the coach since the incident. I am feeling OK about it, but was wondering if others had had a sililar problem. Seems to me that the rough road just jiggle somehting loose and it is OK now. Am I right?
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Old 05-05-2008, 06:11 PM   #3
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What you experienced happens now and then for various reasons. Yes, it is startling the first time!

Simply hitting the restore button is what HWH recommends. You don't have to stop - it can be done on themove.
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Old 05-05-2008, 06:13 PM   #4
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Lindsay;

My HWH jacks do that sometimes if I go over rough roads or RR tracks. I just hit the on button and store button and the jack returns. The first time it happened I thought I had to stop, put the tranny in park and set the emergency brake. I now realize that I can turn on and store the jacks while moving.

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Old 05-06-2008, 06:30 AM   #5
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Happens with my rv as well. Any good bump.
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Old 05-06-2008, 06:36 AM   #6
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My very first trip in our new at that time 2003 Suncruiser that alarm came on and gave me a good scare.

What happens is that the hydraulic jacks retract via spring pressure when you hit the "store" button. When they get "almost" (but not quite) all the way home, they pass the "jacks down" sensor on the ram and the light goes off.

Later on, as you drive, the hydraulic oil in the system warms up and expands. This is particularly prevalent if your jack is near a source of heat, such as an exhaust component. As the oil expands the jack lowers slightly and trips the switch, creating the alarm.

For this reason, HWH recommends that after you press the store button, you let the system shut itself off. If you shut off the system manually after all the lights are out the jacks is only 98% up. It's safe enough that way but it's a hairline trigger to the jack position sensor. If you leave the system shut itself off it'll time out and give you that extra minute or two so that the jacks goes up all the way. Generally that will be enough to prevent any expansion from tripping the switch. However, if it's really cool in the morning when you break camp and then gets very hot when travelling you may still have a "surprise" in the afternoon. I tend to press the store button right after lunch when restarting out to ensure that any slack is taken up.
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Old 05-06-2008, 07:42 AM   #7
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If I may expand on what Mark said. After you hit the store button and the jacks retract, the indicator for each jack goes off, but the power light will still stay on. But that doesnt mean everything is fine. If you just leave it sit there for about another two minutes or so, you will hear a clunk or click and the power light will then also go off. That tells you that the system has recycled.
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Old 05-08-2008, 03:12 AM   #8
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Same problem I've had for the past 2 years-- always the right rear.

I replaced the springs on the right rear (purchased directly from HWH- Price was $21.50 + shipping) and I'm traveling now with 775 miles under my belt and no more problems. The right rear now beats the left rear during retraction.

Read this post of mine on how to install the new ones-- Don't do as I did- do as Tom N suggests:

HWH leveling system

I wish I had done all four now, but I will when I return home,
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