Huawei · PV inverters · Huawei SUN2000-KTL-M1 (three-phase inverter, 3–10 kW, battery-ready)
Alarm 2034Grid Overvoltage
Name in the manufacturer's documentation (fault list): Grid Overvoltage
[1]
In plain words (editorial)
The grid line voltage exceeds the upper threshold; the inverter shuts down. If it happens only occasionally, the grid was temporarily abnormal and the inverter recovers automatically once the grid is normal again.
When to call a service technician: If it happens frequently, contact your installer – the grid values may need to be checked with the local power operator; protection thresholds may only be changed with the operator's consent.
✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.
For technicians
Detection conditions (source text)
- The power grid line voltage exceeds the upper threshold[2]
Steps given by the manufacturer (source text)
- If the alarm occurs occasionally, the power grid may be abnormal temporarily; the device recovers automatically[3]
- If frequent, check whether grid voltage is within the allowed range; if not, contact the local power operator; if yes, modify the overvoltage protection threshold after the operator consents[4]
- Check whether the peak voltage of the power grid is too high; if frequent and persistent, contact the local power operator[5]
What the device does (source text)
- The device is shut down[6]
⚠ Work on refrigerant circuits, mains electricity and PV DC wiring is for qualified technicians only.
The Polish page has more detail (plain-language explanation, safe checks, guides): Read in Polish →
Sources
Every statement has a footnote to the document and PDF page. “Quote verified” means the quote was found automatically in the text of that page.
- [1] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 41 official manufacturer document quote verified
2034 Grid Overvoltage Major
- [2] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 41 official manufacturer document quote verified
The power grid line voltage exceeds the upper threshold.
- [3] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 41 official manufacturer document quote verified
The device automatically recovers after detecting that the power grid becomes normal.
- [4] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 41 official manufacturer document quote verified
power grid overvoltage protection threshold after obtaining the consent of
- [5] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 41 official manufacturer document quote verified
Check whether the peak voltage of the power grid is too high.
- [6] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 41 official manufacturer document quote verified
The device is shut down.