If the error returns immediately, you need a .
This guide covers your Epson WF-3720:
After you perform a full reset on your Epson WF-3720, practice these habits: how do i reset my epson wf 3720 printer full
Select . You may be prompted for an administrator password; the default is usually the printer's serial number. Scroll down to find and select Restore Default Settings . If the error returns immediately, you need a
If your printer displays an error stating "A printer's ink pad is at the end of its service life," a standard factory reset will not work. This requires a specific utility. Scroll down to find and select Restore Default Settings
If your printer continues to throw error codes even after trying these steps, you can check for firmware updates or find certified repair centers directly on the Official Epson Support Portal. If you want to troubleshoot a specific problem, tell me: The on your screen If you are using genuine Epson or third-party ink Your computer's operating system (Windows or Mac)