SolarEdge inverter: grid frequency error — what to do
This means the inverter detected the grid's AC frequency outside its allowed range, which affects production. SolarEdge's guidance is to check the country setting and consult the grid operator. Wait and recheck the app, and contact a professional if it continues.
Can wait
What we see across our fleet
- We have seen this fault on 53 SolarEdge systems, 0.6% of the 8,871 SolarEdge systems we monitor (last 12 months).
- Once it appears, the system usually clears it in about 34 hours (median), and 2.6% clear within 24 hours.
- Replacement cases on record involve these SolarEdge models: U650-1GM4MRMU-A05 (371), USE11400H-USSKBEZ8 (365), SE7600H-USMNUBL75 (118), NX13000T-US00UCYN4 (84), SE10000H-USMNUBL75 (61).
- Source: Otovo fleet monitoring and service records, data through September 2026.
Common causes
- The grid frequency is temporarily too high or too low.
- The inverter is set to the wrong country or grid standard.
- A problem with the AC connection to the inverter.
Safe steps to try
- Note the alert Record the alert text and time in the SolarEdge app.
- Wait Give the grid some time to settle and see whether production resumes.
- Check the breaker Make sure the solar breaker is on. If it is off, switch it back on once.
- Report repeats If it keeps happening, tell a technician the times it occurred.
When to call a professional
Otovo services these systems and can diagnose this fault for you. Call if it repeats. Country settings and AC connection checks should be done only by a qualified technician.
Frequently asked questions
- Will it fix itself?
- It often does if the cause is the grid, since the inverter restarts when conditions return to normal.
- Can I change the country setting?
- No. Only a technician should change inverter settings.
- Does this damage my inverter?
- The inverter stops to protect itself when the frequency is out of range.
Other SolarEdge faults
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- SolarEdge power optimizer: no communication — what it means
- SolarEdge inverter: production issue detected — what to do
- SolarEdge inverter: no site communication — what it means and what to do
- SolarEdge inverter: no communication with the meter — what it means
- SolarEdge inverter: no communication with the inverter — what to do
- SolarEdge inverter: grid voltage error — what it means and what to do
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