Huawei · PV inverters · Huawei SUN2000-KTL-M1 (three-phase inverter, 3–10 kW, battery-ready)
Alarm 4024Software version mismatch
Name in the manufacturer's documentation (fault list): Software version mismatch
[1]
In plain words (editorial)
Software version mismatch between the inverter control unit and the inverter software. The manual says to update the device.
When to call a service technician: If the update fails several times, contact your vendor or Huawei technical support.
✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.
For technicians
Possible causes (source text)
- After the slave node switches to the master state, it is found that the inverter control unit does not match the inverter software version.[2]
Steps given by the manufacturer (source text)
⚠ 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. 122 official manufacturer document quote verified
4024 Software version mismatch
- [2] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 122 official manufacturer document quote verified
after the slave node switches to the master state, it is found that the inverter control unit does not match the inverter software version.
- [3] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 122 official manufacturer document quote verified
update the device.
- [4] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 122 official manufacturer document quote verified
if the update fails multiple times, contact your vendor or technical support.