System Hardware - FlexBoss21, GridBoss, 23 PV panels
Symptom & troubleshooting, This is a new, recently installed system that the PV never starts up. PV panels can be configured as two banks or one complete bank. Initially tried two banks connected to PV inputs 2 & 3 where PV 2 had ~220VDC on it's input and PV 3 had ~ 180VDC. The MPPT's would never start up, i.e. no PV current pulled by inverter on either input (measured with external voltage and current meter). Also, no PV voltage displayed in any PV (1,2,3) Data, Chart, Voltage measurement. I can physically measure voltage at each PV 2 & 3 inverter input terminals but yet no voltage measured by inverter other than small accuracy related fluctuations. In knowing that this inverter has a MPPT start up voltage of 200VDC. The thought was that I was right at it's minimum so I also lowered the Start PV Voltage to 170V. Still no go. I then configured the two strings into one complete string. This now has a voltage of ~380 - 400VDC. I then transferred this to MPPT 1's inputs. This did not work any better and I still could not see any voltage on PV 1's Data Voltage measurement. I have checked all settings under the maintenance tab and everything appears correct. Even the advanced settings -
Note that other than the above PV issue, all else appears to be working. Batteries can supply power to EPS loads & can be charged from grid.
Eric - I can DM you with system access and other information if you want to look at it.
