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Old 07-01-2010, 06:10 PM   #1
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Low voltage relay cycling

The low voltage relay in my battery compartment is cycling. I can hear it "thump" about every 10 seconds. The batteries are 3 months old and voltages all check out. Any tips?



2003 Alpine Coach 40FD
2010 Jeep Wrangler Unlimited in tow.
2 kids, no dogs or cats.
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Old 07-03-2010, 05:08 PM   #2
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Alpine Owners Club
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Location: Albuquerque
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Low voltage relay cycling

Originally Posted by GTHill View Post
The low voltage relay in my battery compartment is cycling. I can hear it "thump" about every 10 seconds. The batteries are 3 months old and voltages all check out. Any tips?


Are you sure it's not a circuit breaker? In which case something is drawing too much current.

Franklin & Dessa
2001 Alpine 34 FDDS
Tow a 2014 CR-V
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Old 07-03-2010, 05:19 PM   #3
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Location: Las Vegas, NV
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If you have the Vansco electrical system, this can be a common problem. There have been many posts on it, here is one. Only pay attention to the cycling issue and the replies from Alpine owners, it is an Alpine issue.

Battery Solenoid Clicking On and Off
Dale Gerstel
2007 Limited SE 40fdts
Las Vegas, NV
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Old 07-04-2010, 12:55 AM   #4
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Location: Long Beach, CA
Posts: 1,563

That has happened a couple times for me. To stop it, I turned off both 12v main switches, disconnected from shorepower then reconnected and turned switches to on. It stopped the problem both times. Dunno why.
2003 Alpine 40FDTS (400HP)
Long Beach, CA
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