- Inverter detects grid Frequency as too high
- Test – DC switch OFF
- Check frequency at the inverter test points
- If Frequency measures high, adjust upper limit with permission from utility
- Check LCD reading, may be a bad measurement circuit Test – DC Switch ON
- Check grid standard
- Replace inverter
Troubleshooting- Over Frequency is detected on the the grid. This occurrence is commonly associated with an incorrectly set grid standard. Please check and reaffirm the grid standard.