The short answer
Upgrade the power control module firmware from the installer account and wait for the alarm to clear.
Plain explanation
From the Huawei manual for the LUNA2000-S0 battery: Open FusionSolar with the installer account. Upgrade the power control module firmware. 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
- Open FusionSolar with the installer account
- Upgrade the power control module firmware
- Wait for the upgrade to finish and the alarm to clear
- Repeated failure → dealer
Source
Huawei LUNA2000-(5-30)-S0 User Manual V17 (2024-05-30), EDOC1100167258, §8.3 Table 8-2 (printed p118+) – distributor mirror, Alarms 3049–3051, Table 8-2ske-solar.com ↗
Where installers ask this
- Huawei Battery Question (r/solar)
- reddit.com/r/Huawei/comments/1usk5v9/
- reddit.com/r/solar/comments/1koxutt/
- reddit.com/r/SolarUK/comments/1v9u0fj/
- reddit.com/r/solar/comments/zo7nd7/
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.