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Old 06-30-2012, 07:59 AM   #1
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Battery isolator relay stays energized

I have a brand new problem on my 09 Camelot. The battery isolator relay stays energized even with no shore power, no engine running and no genset running. I can pull the wire marked, solenoid, off the little black box mounted on the door and it drops out. The black box is marked relay delay or something like that. Is the little black box defective or is there something else I can try. Both battery banks read about 12.5 volts after sitting overnight.
Thanks, Doc
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Old 06-30-2012, 08:15 AM   #2
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Thought that relay was a temporary duty device which means that in a continuous duty situation, it should overheat badly .
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Old 06-30-2012, 08:35 AM   #3
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It is designed to stay energized after you shut down the engine until the voltage drops below 13 or so. Are you saying it stays hot through to the next day? If so this is a very common problem. In our case we have had the coach in for repair 3 times. The problem was with the circuit that sends the signal to the solenoid. Currently our circuit board is not working again so I have resigned to the idea of holding the battery boost switch on while driving, and turning it off when parked. In other words my brain is the circuit that controls when the batteries will be connected or disconnected.
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Old 06-30-2012, 02:33 PM   #4
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Quote:
Originally Posted by H. Miller View Post
Thought that relay was a temporary duty device which means that in a continuous duty situation, it should overheat badly .
It is and it does, which is why I asked for help chasing down the culprit. Any ideas?
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Old 07-05-2012, 10:10 AM   #5
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What type of battery isolator is it? some are temporary duty solenoid and some are permenent duty. Intelletic makes a permenent duty system. If it is PM me and I will explain how to fix an Intellitic permenent duty solenoid system to disconnect manually.
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Old 07-06-2012, 08:09 AM   #6
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Quote:
Originally Posted by floatin doc View Post
I have a brand new problem on my 09 Camelot. The battery isolator relay stays energized even with no shore power, no engine running and no genset running. I can pull the wire marked, solenoid, off the little black box mounted on the door and it drops out. The black box is marked relay delay or something like that. Is the little black box defective or is there something else I can try. Both battery banks read about 12.5 volts after sitting overnight.
Thanks, Doc
09 Cammy
I'm not so sure of the reason for that "delay"? I might consider defeating that "feature" myself.

For this conversation though, that box is getting a signal from somewhere, telling it to close that relay. Then, on the loss of that signal, it should eventually stop powering the relay. So what I'm wondering, is what is telling that box to close the relay? Where is it getting the signal to do that? Is that signal source working as it should?

In other words, is the problem in the box that has the solenoid wire on it, or could it be further upstream?
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