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Old 11-27-2015, 08:44 AM   #11
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I was haunted with all kinds of warnings and electrical problems earlier this year, and it turned out to be the chassis batteries. Once replaced, all was good.

Here is the confusing part (to me, anyway). I've asked both Freightliner and FR folks if the chassis batteries are charged while on shore power. Half said yes and half said no. I went out and put a load tester on the chassis batteries, and within a few seconds, heard the converter kick in (not sure what, if anything, that means). But in any case, all last winter I assumed they were keeping a charge with shore power. While it did start fine in the spring, mid summer and fall is when all the weird electrical problems began.

After the chassis batteries were replaced, once again, I left everything to the shore power. A couple weeks later, when I went to start it, briefly, I saw the low battery flash on and not a real "crisp" turning of the starter.

I then took out a battery tender, turned the coach master switch to off, and left the battery tender take care of the chassis batteries. Now she starts up like I have two brand new batteries (well, actually, I do) and no more warnings.

While I'm still not sure if the shore power charges the chassis batteries. I will always use the battery tender on those whenever it will sit for a length of time (especially in the winter).

So after this long story, I guess all I'm trying to say is when multiple things are out of "sync", I would look at the batteries as being the culprit first.

Ken
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Old 11-27-2015, 09:09 AM   #12
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Disconnecting batteries and saw this magnum line not connected to batteries. Anyone know what it is and where it connects?


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Old 11-27-2015, 09:10 AM   #13
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Mike, I would try starting the generator again. Sometimes it just shuts off (hopefully you don't also need a fuel filter). If the generator will not start because the batteries are low, try starting the coach and while running, restart the generator. That has worked for me in the past. As far as shore power, there would appear to me to be a problem from the post to the coach. When the batteries are charging the voltage on the control panel should read around the 14.1 volts you mentioned in the 1st post. The 9 volt number that originally showed before the charge maybe the state of the batteries. Having your batteries fall before 50% charge level is not good. If you are still plugged into the post, I would check the post, try switching to another post, check to make sure the post power is on, etc. I would also check the battery level, the fuse on the back of the battery wall, and I would check the off/on switch on the inverter (that is probably on, if generator did charge the batteries up to 1/3). Hope this helps! Craig


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Old 11-27-2015, 09:17 AM   #14
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Old 11-27-2015, 09:19 AM   #15
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Negative post on back right battery. Sorry it doesn't show up that well.


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Old 11-27-2015, 09:20 AM   #16
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Thanks, not sure if that was part of problem!


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Old 11-27-2015, 09:23 AM   #17
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Old 11-27-2015, 09:27 AM   #18
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Mike, looking at your battery picture, it appears that your battery cable is also not attached. I would think when they checked your batteries, they took them out and did not reconnect them properly!!!!!


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Old 11-27-2015, 09:28 AM   #19
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Have you checked the water in the house batteries yet?
Also, if/when you get a full charge on these batteries, do a LOAD TEST on them. You can pull them out and have a "battery store" do it or for a few bucks, buy your own LOAD TESTER and do it yourself.
I'm guessing your batteries are shot and they need replacing. Keeping water in the house batteries is a key to prolonging house battery life. Let them run low on water for a extended period and get your credit card ready to take a hit for new ones.
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Old 11-27-2015, 09:31 AM   #20
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To answer your question, that is part of the connection to the controller. I also see that you said you were disconnecting the batteries, so that might not have been the issue of them not connecting them properly.


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