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jameshoare1964 avatar image
jameshoare1964 asked

MPPT 150/170 Always in abrorbtion at says 56V, yet Cerbo says 52V

I updated my firmware to V3.15 on my 5 MPPT charge controllers , and my PV almost stopped generating (25W total) from 5 controllers, and the voltage seemed different to what the Cerbo was saying. I rolled back to V3.13 and the problem still persists, despite 2 years trouble free performance up to now. The controllers remain on Float

Any suggestions are welcome. (I have a BYD EMS)

MPPT Controllers
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1 Answer
Alexandra avatar image
Alexandra answered ·

@JamesHoare1964

Check and verify with a multimeter.

Chances are though a blown fuse or loose connection is contributing to the issue.

So that would be the second check.

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