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Error 66 on SmartSolar MPPT 250/100 after Cerbo GX FW automatic update (to v2.87)

Hello guys,


with my colleagues we saw strange behaviour with one of the installed MPPT after last automatic FW update of Cerbo GX (update to FW v2.87, build 20220531122411) yesterday.

I have installation with 3x MultiPlus-II 48/3000/35-32 (in 3-phase), 2x SmartSolar MPPT (150/60 + 150/70) connected via VE.Direct, Cerbo GX and 3x Pylontech US3000C. With my installation I had no problem after automatic FW update.

One of my colleague has installation with 3x MultiPlus-II 48/3000/35-32 (3-phase), 2x SmartSolar MPPT (250/70 + 250/100) connected via VE.CAN, Cerbo GX and 3x Pylontech US3000C. He had issue with Error 66 on MPPT 250/100 after automatic FW update.

Second colleague has very similar installation with 3x MultiPlus-II 48/3000/35-32 (3-phase), 3x SmartSolar MPPT (150/35 + 250/70 + 250/100) - 150/35 connected via VE.Direct and 250/70 + 250/100 connected via VE.CAN, Cerbo GX and 3x Pylontech US3000C. He had exactly the same issue with Error 66 only on MPPT 250/100 after automatic FW update.

After some testing and changing settings via Remote Console I was able to clear the error, but... I tried to switch off the Bluetooth on Cerbo GX (my opinion was that after Cerbo reboot, MPPTs switched automatically to Smart networking), but BT Smart networking is not set on MPPTs..., so error still appears, which was expected from my side. So after that in Cerbo GX I changed #Device numbers in Menu/Settings/Services/VE.Can port/Devices (but this settings is not described in documentation) to 0 for Cerbo GX (default value), 1 for one MPPT and 2 for second MPPT. After a while error 67 appears. So I changed numbers back to default value (0) and after a while error disappeared and from this moment there is no problem with installation.

Has someone same problems after last FW update of Cerbo GX? What could be the reason for this?

MPPT Controllerscerbo gxfirmware update
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1 Answer
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pwacquiez answered ·

Hi,



I got this error because of a confit: I had activated VEsmart BT by mistake. It is the Cerbo GX which synchronizes the MPPTs.




This is not indicated in the manual as a possible source of this error 66.

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