question

Herve RV Nizard avatar image
Herve RV Nizard asked

BMV700 not reading amps in.

Offgrid installation. Multi 3000/48. Mppt150/35. 4 x 270w panels 2s2p. 4x210a 12v agm batteries

Just commissioned this installation in a remote area. Problem with BMV700 reading. All readings are good except does NOT read the amps in from the cc.

Amps out readings are accurate.

Battery voltage well in sync with solar production / balance , but no amp in read.

Amp out ok.

When checking the mppt production vua a bluetooth dongle, no problem with amps in.

I have no other bmv700 in stock.

Any idea what could be wrong ?

Thanks for help on that

BMV Battery Monitor
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2 Answers
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

Sounds like the MPPT isn't connected to the correct side of the shunt.
Do you have a wiring diagram and/or some pictures of the installation for us?

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Herve RV Nizard avatar image
Herve RV Nizard answered ·

@mathias. Thank you very much for your answer. I do not have pictures with me but will get them to you shortly.

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