I’m currently testing the new MPPT RS 450. I got twice the error code "#121 Tester Fail". I am not able to find the list of error codes for this equipment. Thanks in advance to point me this list.
The list of error codes can be found here: https://www.victronenergy.com/live/mppt-error-codes
For this specific error it contains the following text:
If the unit does not work and error 121 pops up as the active error the unit is faulty, contact your dealer for a replacement.
If the error is only present in the history data and the unit operates normally this error can be ignored safely. Explanation: when the units powers up for the very first time in the factory, it does not have calibration data and an error 121 is logged. Obviously this should have been cleared, but in the beginning units left the factory with this message still in the history data.
Thiemo van Engelen
The firmware 1.04 fixed my bugs. In your changelog you mention: "Fix 30-day history on systems that only use an external AC coupled PV inverter.". In my case the MPPT RS is off-grid but associated with a AC coupled inverter Fronius.
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