Deye F13: Working / Grid Mode Changed
F13 simply means your Deye inverter noticed that its working mode or grid type changed. It's one of the most harmless codes: in most cases it clears by itself within a minute. It often appears right after you (or your installer) change a setting, or when the grid condition shifts.
What usually triggers F13
- A settings change you or your installer made (grid type, battery mode, work mode).
- A grid condition shift the inverter adapted to.
- A normal mode switch on a hybrid system (for example moving between selling, self-use, and backup modes).
The safe fix, step by step
- Wait about a minute. F13 normally clears on its own once the new mode settles.
- If it doesn't clear, power-cycle. Turn the DC isolator and AC breaker off for one minute, then turn them back on.
- Check your settings are what you want. Confirm the grid type and work mode match how your system is meant to run. If you didn't change anything and it keeps reappearing, note when it happens.
Quick decision flowchart
F13 appears
↓ wait a minute
✅ Cleared → nothing to do. It was a normal mode change.
❌ Stays or repeats → power-cycle and check your mode/grid settings.
↓ keeps repeating with no setting change
If it keeps coming back on its own, mention it to your installer so they can check the configuration.
Good news
F13 is informational, not a hardware fault. On its own it doesn't mean anything is broken. It only needs attention if it repeats without any setting change.
Related Deye codes
FAQ
Should I worry about F13?
Almost never. It's the inverter reporting a mode or grid change and it usually clears within a minute. Only investigate if it repeats without you changing anything.
F13 keeps popping up every day. Is that normal?
Repeated F13 with no setting change can point to an unstable grid or a configuration that keeps switching modes. It's worth having your installer review the work-mode settings.
Sources
- Deye Hybrid Inverter User Manual (F13 = "Working mode changed"; usually clears automatically, otherwise cycle DC/AC for one minute).
- Deye dealer technical references.
⚠️ Safety disclaimer. Solar inverters carry lethal DC and AC voltage even when "off". This guide covers external, switch-level steps only. Never open the unit or work on wiring unless qualified. When in doubt, call a licensed installer or electrician.