The short answer
Retry when DC power is available and the inverter temperature is normal; upgrade optimizers too if fitted.
Plain explanation
From the Huawei manual for the SUN2000 inverter: Retry the upgrade. Upgrade when DC power is available and the inverter temperature is normal. The rest of the checklist is below; work through it in order. 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
- Retry the upgrade
- Upgrade when DC power is available and the inverter temperature is normal
- If optimizers are installed, upgrade the optimizers too
- Persists → vendor
Source
Huawei Inverter Alarm Reference, Issue 09 (2024-11-01), EDOC1100345192, Alarm 2065, §35, p41files.keno-energy.com ↗
Where installers ask this
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.