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Old 10-03-2018, 06:28 PM   #15
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Interesting

I was just talking to a gent tonight who has a 2017 CS as do I. He was having a similar issue with the chassis battery dying - I have not had an issue. After a couple of months of trying, he found a solution. It was a device that connected one lead to the house battles and one lead to the chassis battery and a ground wire. He says the problem is no more. I'll see if I can get in touch with him and get you a name of the device.
Also, I thought my generator was started by the house batteries too - it's on my list to ask some one here at Newmar, since I just happen to be here for service.
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Old 10-03-2018, 08:40 PM   #16
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Quote:
Originally Posted by BnB View Post
I was just talking to a gent tonight who has a 2017 CS as do I. He was having a similar issue with the chassis battery dying - I have not had an issue. After a couple of months of trying, he found a solution. It was a device that connected one lead to the house battles and one lead to the chassis battery and a ground wire. He says the problem is no more. I'll see if I can get in touch with him and get you a name of the device.
Also, I thought my generator was started by the house batteries too - it's on my list to ask some one here at Newmar, since I just happen to be here for service.
I would be very interested in this information, thank you! I donít know if Newmarís answer regarding the generator being powered by the chassis battery is exclusive to my model year or to gassers in general.
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Old 10-04-2018, 11:39 AM   #17
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Well I talked to 2 different Newmar techs. One says the charging system for the chassis battery is connected to a solenoid with the house batteries and it charges at the same time. The second says, there is a switcher what once the house batteries are charged it charges the chassis....... Obviously, something on your coach isn't working. I spoke to the gent with the solution, he installed a Xantrex 82-0123-01 Echo Charge Dual Battery Bank Combiner. I'll try to include a picture of the Echo...... Maybe that will work for you too.
Also, One tech said the genset works off the house batteries. The second said the DP work off the Chassis but not sure about the gas units..... There you have it guess I'll have to follow the power back to see where it goes.
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Old 10-04-2018, 12:13 PM   #18
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If your generator starts and run from the chassis battery AND the house charger does not charge that chassis battery, the generator engine controls, while running, will run your chassis battery down.
All RV generators uses power to run and most don't not have a charging system. They depend on the house charging system to keep the battery charged.
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Old 10-04-2018, 12:27 PM   #19
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A friend of mine just bought a brand new Tiffin Bus. His chassis battery would not hold a charge, the house batteries were ok. Took it in to the dealer and found out that the selenoid was wired backwards. Problem solved.
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Old 10-17-2018, 08:20 PM   #20
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UPDATE

We took the RV for service and the chassis battery was replaced. The VERY NEXT DAY, we had no power to the wheelchair lift, the generator would not start and the power panel was reading 6.7v.

Voltmeter read 12.4v and the engine started without issue. So, just as we thought, the chassis battery was not the problem. After some troubleshooting, the service technician noticed that one side of the "relay box" was registering 12v and the other was registering 6v.

We left it there for further diagnostics. Any ideas? Bad relay? Something else?
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Old 10-18-2018, 08:31 PM   #21
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This is incorrect. I called Newmar to verify. On my coach, the chassis battery starts the generator.
Same way on mine...
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Old 10-24-2018, 03:54 PM   #22
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Old post old problem was fixed in thread found in this link, CS coach's had problems charging the chassis batteries and a fix was made to correct it, by CC8375.
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Old 10-24-2018, 10:47 PM   #23
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Originally Posted by 007";4466418]Old post old problem was fixed in thread found in [B][URL="http://www.irv2.com/forums/f103/important-information-for-newmar-owners-375453.html
this lin[/URL][/B]k, CS coach's had problems charging the chassis batteries and a fix was made to correct it, by CC8375.
Thank you, but the link you provided deals with a different issue. Our chassis battery takes a charge and holds a charge. The problem is communicating that charge to other components that run off the chassis battery, such as the generator. The power panel thinks the chassis battery has only a 6.7 V charge, but a voltmeter indicates the chassis battery is well over 12 V. So it’s not a charging issue. Our technician traced the issue to the solenoid, which is being replaced.
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Old 10-25-2018, 03:52 PM   #24
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Did you read chassis battery disconnected by itself? Not with leads connected into solenoid and BIRD SYSTEM.
There are different charging problems within those links.
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Old 10-25-2018, 04:34 PM   #25
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You should never let battery go down to 10V. At 10V and below, the battery is getting damaged. If you can, have the batteries load tested and see if they need replacement.
They are finding that having the AGS start at 12.3 volts maximizes AGM battery life. Anything below that shortens it's life.
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Old 10-25-2018, 05:42 PM   #26
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There are some answers in this post also.
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