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Old 05-24-2024, 05:49 PM   #1
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At my wits end with my Battery Control Center SDC 107A

My 2009 Forest River Georgetown GTX3600 won't charge my house batteries while on shore power. But shore power will charge my chassis battery. Also If I start the engine, the alternator will charge the chassis and house batteries with 13.6vdc.

After much reading, I thought perhaps a solenoid, but opted to buy an entire new BCC from RV Products. I just installed the brand new unit.
And I also installed 2 brand new batteries. Additionally I've taken the batteries out and had them tested at a shop to make sure I didn't get 2 bad ones.

What I have been able to trace
- Converter is producing 14.4vdc.
- BCC is in fact receiving the 14.4vdc from the converter
- BCC output to chassis battery is 13.4vdc
- BCC output to house/coach batteries is 0.
- To make sure my BCC is grounded I checked continuity between Batteries negative, and the BCC housing. It is good.
- I have gone through every fuse box in the entire RV, and checked every fuse. All are good.

- Side note. Right before I had the problem, I had my Generator serviced. But I can't think how that would be relevant to this problem. In fairness I haven't started the generator since, because my batteries won't kick it over.

Since a running engine charges both sets of batteries through the BCC, I believe that means the solenoid is working fine.

I've attached the schematic. has to be something on the coach side of the schematic telling the RV not to charge.

I'm not sure where to turn next.
Attached Files
File Type: pdf SDC-107A-Vehicle DC System Schem B1-0062e.pdf (55.7 KB, 17 views)
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Old 05-24-2024, 07:33 PM   #2
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Moved thread from the Tech and Repair section to the Georgetown sub-forum for better help from other Georgetown owners and possible factory support.
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Old 05-24-2024, 08:53 PM   #3
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RV Custom Products is supposed to have really good product support. Have you asked them for assistance?

https://rvcustomproducts.com/rv-custom-products-home

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Old 05-24-2024, 09:31 PM   #4
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Miracle of Miracles.

I went back out to the bcc and was looking at it when I noticed there were 2 fewer fuses in the new box than the old one. I added the 2 missing fuses and my nightmare is over. It is finally charging like it should.
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Old 05-25-2024, 10:53 AM   #5
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Nice. Thanks for the update.
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Old 05-31-2024, 11:30 PM   #6
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Which fuses (number on circuit board) were missing?
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