Please tell me what the problem could be. I have an MPPT RS 450/200-MS 4 controller. I recently noticed that it displays half the current it actually produces, as well as the power. For example, the panels are producing 1000W, but it displays 500W, and the current is also half that. This apparently happened when I updated the firmware to v1.26. The controller is controlled by the BMS. I tried disconnecting it and configuring it independently without the BMS. But only turning the controller off and on again helps, but for a couple of minutes, and then the readings are inconsistent again.
It’s fixed, everything’s back to normal.
I re-flashed the firmware to the same v1.26.
The readings are now accurate.
After extensive testing, I even re-flashed the SmartSolar MPPT RS 450/200 to firmware v1.26. After a while, the readings would display incorrectly, every 5-20 minutes. But when I rolled back to the old firmware v1.22, the readings returned to normal. This was the final check. Only with this firmware v1.22 did everything display correctly.