Deye F13 working mode change at start-up. Do I need to worry?

Plain explanation

From the Deye manual for the SUN-SG04LP1 hybrid: Usually clears automatically after a grid type/frequency or battery-mode change. Otherwise installer switches DC and AC off, waits 1 min, switches on. 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

1. Usually clears automatically after a grid type/frequency or battery-mode change
2. Otherwise installer switches DC and AC off, waits 1 min, switches on
3. Keep firmware updated

Source

Where installers ask this

• DEYE Hybrid inverter (r/Deye)
• reddit.com/r/solar/comments/1cnqu76/

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.