A bank is not reporting
A bank may be missing because:
- it is misprogrammed,
- there's an open or shorted connection,
- it is misconnected,
- the communication cable from the BMS is too long
- it picks up too much electrical noise.
- the cell boards are in the wrong order (positive end on most negative cell, and vice-versa)
First:
Make sure that the entire bank is missing, and not just some cells; if the latter, see the Missing cell section
Make sure that the problem is not due to electrical noise; if so, see the Noise section
See also:
Procedures
- With the BMS power on, see if any cell boards are blinking
- Proceed with the test depending on which cells blink:
None blink: No cell board is blinking
All blink: All cell boards blink
Part: From the positive end board up to a certain point they blink, then the rest don't blink
One: Only the positive end board blinks
Random: Some blink, some don't, with no apparent pattern
