[RE-wrenches] SB2500U vac-bfr error

[William Miller]

Dear Wrenches:



I have a customer with a SMA SB2500U exhibiting the vac-bfr error code.  I
believe this indicates a grid voltage out of tolerance.  The inverter has
correct grid voltage and frequency to the grid terminals and is a model
that does not include the fuse.  This inverter is on longer supported so I
can’t get a repair. I have previously changed out the firmware and used the
reset sequence.



I tried resetting the inverter by cycling power for several minutes and
using the ENS1/ENS2 procedure.  No change in status.  Does anyone happen to
know of any other method to reset this inverter?  Otherwise it becomes a
boat anchor.



Thanks,



William





[image: Gradient Cap_mini]
Lic 773985
millersolar.com <http://www.millersolar.com/>
805-438-5600
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