The short answer
Switch AC and DC off, wait 5 minutes and power up again; if it persists, it's a dealer case.
Plain explanation
From the Huawei manual for the SUN2000 inverter: Installer switches AC and DC off, waits 5 min, switches on. If it persists → dealer. Installer only: DC and AC work on a live PV system is dangerous, so owners should note the code and call their installer.
Steps from the source
- Installer switches AC and DC off, waits 5 min, switches on
- If it persists → dealer
Source
Huawei Inverter Alarm Reference, Issue 09 (2024-11-01), EDOC1100345192, Alarm 2087, §49, p62files.keno-energy.com ↗
Where installers ask this
- Macht Huawei SUN2000 täglich einen Lüfter-Check? (r/DeutschePhotovoltaik)
- reddit.com/r/DeutschePhotovoltaik/comments/1fhfhpz/
General guidance based on the manufacturer's manual or the named source. Always follow the current manual for your exact model and your national code. DC and AC electrical work is for qualified installers only. Not affiliated with or endorsed by any brand named; trademarks belong to their owners.