I just updated my 12v 400Ah lithium battery system, reusing many components including my BP100 -- the BP100 worked previously but now is giving me an E1 (short circuit) code when I connect the battery positive to it. I have done a lot of testing and don't believe I have actually have a short circuit. Can you tell me what reasons would lead to the E1 fault so I can rule them out? Or is there a way to test if the BP100 is definitely faulty?
Scenario 1: If I remove the "out" load cable from the BP100 and connect the battery to the "in" the BP100 will not give an error.
Scenario 2: If I have the load cable connected to the "out" and turn on the battery, the BP100 will give the E1 error and not provide power to the "out" post, however if I use a jumper wire with a 15A fuse in line and touch it to both the "in" and "out" posts on the BP100, it will provide power to my house, not blow the 15A fuse, and I can also remove the jumper cable and the BP100 will work as normal, continuing to provide power to the "out" post without any error codes.