Huawei · PV inverters · Huawei SUN2000-KTL-M1 (three-phase inverter, 3–10 kW, battery-ready)
Alarm 2035Grid Voltage Imbalance
Name in the manufacturer's documentation (fault list): Grid Voltage Imbalance
[1]
In plain words (editorial)
The three grid phases differ greatly in voltage; 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 or persists, have your installer check the AC cable connection and, if needed, contact the local power operator.
✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.
For technicians
Possible causes (source text)
- The three phases of the power grid differ greatly in voltage.[2]
Steps given by the manufacturer (source text)
- If the alarm occurs occasionally, the power grid may be abnormal temporarily. the device automatically recovers after detecting that the power grid becomes normal.[3]
- If the alarm occurs frequently, check whether the power grid voltage is within the normal range. if not, contact the local power operator.[4]
- If the fault persists for a long time, check the connection of the ac cable.[5]
- If the ac cable is correctly connected and the alarm persists and affects the operation of the plant, contact the local power operator.[6]
What the device does (source text)
- The device is shut down.[7]
⚠ 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. 42 official manufacturer document quote verified
2035 Grid Voltage Imbalance
- [2] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 42 official manufacturer document quote verified
the three phases of the power grid differ greatly in voltage.
- [3] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 41 official manufacturer document quote verified
if the alarm occurs occasionally, the power grid may be abnormal temporarily. 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. 42 official manufacturer document quote verified
if the alarm occurs frequently, check whether the power grid voltage is within the normal range. if not, contact the local power operator.
- [5] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 42 official manufacturer document quote verified
if the fault persists for a long time, check the connection of the ac cable.
- [6] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 42 official manufacturer document quote verified
if the ac cable is correctly connected and the alarm persists and affects the operation of the plant, contact the local power operator.
- [7] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 41 official manufacturer document quote verified
the device is shut down.