Using a third-party resetter will void your Epson warranty. If your printer is still under the standard 1-year or 2-year warranty, do not use a resetter. Instead, contact Epson support. However, once the warranty expires, a resetter is the most economical way to keep your $400+ printer alive.
A "resetter" (officially known as an Epson Adjustment Program) is a software tool that communicates directly with your printer’s EEPROM (memory chip). It resets the internal waste ink counter back to zero.
Important Clarification: A resetter does not physically clean or replace the waste ink pads. It simply tells the printer that the pads are "empty," allowing you to continue printing. Because the L6270 is an EcoTank model, the waste ink pads are larger than standard cartridge printers, but they still have a physical limit.
A resetter is a software tool (often Windows-based, .exe or .exe + keygen) that communicates with the printer via USB to reset the waste ink counter to zero. It is not an official Epson product but is developed by third-party technicians or reverse engineers.