Software resetters (third‑party)
Your Epson L3211 printer is a reliable workhorse, but it may suddenly stop working and flash red lights. A "Service Required" message will likely appear on your computer screen. This happens because the printer's internal waste ink pad counter has reached its maximum limit. Epson L3211 Resetter
What your PC is running (Windows 10, 11, etc.)? Epson L3211 Resetter