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Victron Orion 24/12-70 Converter Short Circuit?

pactolus

New Member
Joined
Jun 12, 2021
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I installed a Victron Orion 24/12-70 stepdown converter into my RV within the last month and it initially worked as intended. I had it fused on the 24V input side with a 30-amp inline fuse. Today the fuse was blown. I attempted to replace the fuse and it immediately sparked. I confirmed all 12-volt loads were off and I removed the remote on/off connector from the Orion, then attempted to replace the fuse again. It again immediately arced and destroyed the fuse. I am assuming there must be an internal short-circuit in the Orion. Any other possibilities I might be missing?
 
Do you have Ohm meter?
If you do, then disconnect every thing from the Orion, set meter to 200 Ohm scale then check the resistance between Input + terminal and input ground to see what resistance you get, then do the same on the output side.
 
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