This is a pressurization error. Wells told me you called and reported having a difficult time getting the carts to seat into the printer.
Please turn your printer off then back on after a minute. If it starts up and displays "READY" on the LCD panel, try making a test print. If you get the error message again, open both cartridge bay doors and check all your carts to make sure none are leaking, then reinstall and make sure the back of all carts are level with each other before closing the cartridge bay doors, and the printer should then read the chips and pressurize the carts. If the error returns, please check the carts by following the procedure below. To determine which refillable cartridge is causing the pressurization problem, open the two cartridge bay doors, unlock and remove the set of refill carts, then install the set of Epson carts. Trick the printer into thinking the doors are closed by raising the white plastic levers in the door locking area. The printer should read the cartridge chips, then pressurize the carts. Listen for the pump sound, and if it doesn’t come on, lower the white locking lever of one side chamber (to make the printer think the cartridge bay door has been open), remove one cart and install the refill cart in the position, then raise the white lever again to “close” the door. Listen for the pump sound. If it doesn’t cycle on after about 30-60 seconds, repeat this procedure with the next cartridge, going thru each one. When the repeated pump sound starts, it’s likely caused by the last cartridge you just installed. If you discover a cartridge that isn't pressurizing correctly, lower the white cartridge bay door lever to make printer think the cartridge bay door was opened (to stop pressurizing), remove the suspect cart and install another cart in it's position, raise the white door lever again and listen for the pump to make sure the printer can sit idle for at lest 30 seconds without the pump cycling on again.
Let me know your results, if you have questions, or there's anything else I can help you with.
Best regards~ Dana