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towatai asked

Possible Fix for "Error #67"

To all who are affected by the sporadic "error #67". if you use a self-built battery and have connected it via UART or RS485 adapter, replace the adapter cable with a decent adapter.

in my case, I have replaced my original Daly RS485 -> USB cable with a DSD TECH SH-U11F with matching JST connector and since then not a single error message. The whole thing now runs a good week without any problems.

I have the suspicion that in the original but still cheap adapters the installed chips and / or the thin, unshielded cables can cause problems. the adapter I mentioned works both on the UART and RS485 port!

tested with two Daly BMS on an Easysolar II GX.

MPPT SmartSolarBMSerror
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Mike Dorsett avatar image Mike Dorsett commented ·
could also be a ground loop problem causing this type of interference.
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