Huawei · PV inverters · Huawei SUN2000-KTL-M1 (three-phase inverter, 3–10 kW, battery-ready)
Alarm 2101App Communication Certificate Expired
Name in the manufacturer's documentation (fault list): App Communication Certificate Expired
[1]
This page only quotes the original English documentation. A plain-language explanation has not been written yet, so the page is not indexed by search engines.
For technicians
Possible causes (source text)
- The digital signature certificate has expired.[2]
Steps given by the manufacturer (source text)
- Replace the digital signature certificate immediately.[3]
⚠ 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. 95 official manufacturer document quote verified
2101 App Communication Certificate Expired
- [2] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 95 official manufacturer document quote verified
the digital signature certificate has expired.
- [3] Inverter Alarm Reference (Issue 14, 2026-06-15) (EDOC1100345192 Issue 14) , p. 95 official manufacturer document quote verified
replace the digital signature certificate immediately.