If your Epson L3250 Series printers have CONSTANTLY LIT WiFi, drop and sheet indicators - then your firmware has crashed, the printer is waiting for a firmware update. The Epson FirmWare Updater program will help you.

(ATTENTION! If your indicators are FLASHING - then you have a different error, perhaps a full diaper, then you need a different program)

Epson FirmWare Updater is a utility developed by Epson, which is designed to update the firmware (microprogram) of Epson printers and multifunctional devices. Firmware updates may include bug fixes, performance improvements and new features.
In Windows Settings - Devices - Devices and Printers - the printer is called USB 2.0 Printer (Hi-Speed), and in the PrintHelp program it says Epson MFP-IPL (Service Mode) - this means that the printer has entered service mode and is waiting for firmware

You can purchase Epson FirmWare Updater and fix the error using the instructions included with the program