SMA STP 12000TL-US - Manual (Page 46)

Event number Message, cause and corrective measures
3301 Unstable operation > Generator output too low
There is not enough power at the DC input of the inverter for stable operation.
This may be caused by snow on the PV modules or insufficient irradiation. The
inverter interrupts feed-in operation and can no longer connect to the utility
grid.
Corrective measures:
1. Wait for higher irradiation.
2. If this message is displayed frequently, ensure that the PV array has been
correctly rated and wired.
3302 Unstable operation > Abort self-test
There is not enough power at the DC input of the inverter for stable operation.
This may be caused by snow on the PV modules or insufficient irradiation. The
inverter interrupts feed-in operation and can no longer connect to the utility
grid.
Corrective measures:
1. If irradiation is too low, wait for it to increase.
2. If this message is displayed frequently, ensure that the PV array has been
correctly rated and wired.
3303 Unstable operation > Data storage blocked
There is not enough power at the DC input of the inverter for stable operation.
This may be caused by snow on the PV modules or insufficient irradiation. The
inverter interrupts feed-in operation and can no longer connect to the utility
grid.
Corrective measures:
1. Wait for higher irradiation.
2. If this message is displayed frequently, ensure that the PV array has been
correctly rated and wired.
10 Troubleshooting SMA Solar Technology AG
Installation Manual STP12-24TL-US-IA-en-16 46