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Old 08-03-2022, 02:29 AM   #1
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Brand: Thor Motor Coach
Model: Axis 24.1
State: California
Posts: 26
THOR #17811
Learned something new about DC power

I had switched out the house batteries. I put everything back in place and the batteries would not power the interior. I tested everything I knew. The old 100 AMP breaker next to the house batteries looked suspect to me, so I swapped it out too. But still nothing. Everything worked on shore power or via generator, but nothing worked on batteries along. I check every fuse in all four fuse boxes. My lack of knowledge was evident. So, I called a local mobile RV guy, who thankfully was working on an RV just 5 minutes away. He came right over. in about 5 more minutes he solved the problem and taught me something new. There is a breaker in the fuse box under the driver's seat that is accessed via the smaller outside storage compartment. In that fuse box is a breaker that looks to me like a relay. But it's not a relay. On the side of this breaker is a little switch (see the arrow point to the switch). All he did was flip that switch and everything worked! This may be common knowledge to many of you, but I post this as it may be helpful for someone like me.
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Old 08-03-2022, 12:09 PM   #2
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Brand: Thor Motor Coach
Model: Axis 24.1
State: California
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THOR #17811
BTW this RV is a 2015 Axis 24.1.
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Old 08-03-2022, 01:01 PM   #3
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Brand: Thor Motor Coach
Model: 2016 Thor Outlaw 29H
State: Tennessee
Posts: 668
THOR #13869
Very interesting and thanks for sharing.
One question: I take it there is a button that needs pushed to reset, is that what your arrow is pointing at?
TIA
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Old 08-03-2022, 01:05 PM   #4
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Model: Axis 24.1
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THOR #17811
Yes, it's a small toggle on the side.
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Old 08-03-2022, 04:08 PM   #5
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Brand: Thor Motor Coach
Model: 2013 ACE 30.1
State: Alberta
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THOR #2631
Your pictures look very much like the BCC (Battery Control Center) from RV Custom Products that is used in many other older class A coaches too. You can find a complete schematic and pdf documents on how this control board functions if you want to learn more about it. You "likely" also have the battery interconnect relay and coach/chassis latching relays under the circuit board......or similar.



https://rvcustomproducts.com/fw-2050
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Old 08-03-2022, 04:25 PM   #6
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Brand: Thor Motor Coach
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THOR #17811
Yes, it is the BCC, I called it a fuse box.
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Old 08-18-2022, 04:07 PM   #7
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Brand: Thor Motor Coach
Model: Windsport 29m
State: North Carolina
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THOR #9553
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Originally Posted by musicflog View Post
Yes, it is the BCC, I called it a fuse box.
I wonder where that panel is on my 2018 Thor Windsport 29m. Just in case!!!
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Old 08-18-2022, 06:59 PM   #8
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Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,326
THOR #7035
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Originally Posted by knucklehead View Post
I wonder where that panel is on my 2018 Thor Windsport 29m. Just in case!!!
You don't have a BCC.
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