413 | Abnormal PV String Connection | Major | Cause ID = 1 The PV string does not properly connect to the MPPT1 circuit. Cause ID = 2 The PV string does not properly connect to the MPPT2 circuit. Cause ID = 3 The PV string does not properly connect to the MPPT3 circuit. Cause ID = 4 The PV string does not properly connect to the MPPT4 circuit. | Check the PV string for reverse connection and cross connection. |
Condition may arise after opening both DC disconnects and leaving strings disconnected for any type maintenance. In the event that this happens, please attempt Automatic Detection of PV Cables as shown below:
If Automatic Detection fails, you can attempt Manual Detection as shown Below
The Control Panel or A/C panel (left hand side with the display) is held closed by 2 T-130 Torx head bolts. Some are security Torx (pin in the center of the head) and all are captive, meaning they won't fall out when loosened all the way.
