It means that the printer's ink pad is full and now it cant properly dispose of the ink it used to do when it was younger. Which makes this printer no longer move or print.
Epson has a screwed up way of cleaning the ink off your ink cartriges. It uses a technology which blows compressed air into each cartrige ink hole to keep the ink from drying. Any excess ink is suctioned (not wiped) into a plastic tube. This plastic tube leads from the bottom of the ink carage cleaning area to some ink pads below the printer assembly. Now here's the common myth people think about repairing this issue. They think that just removing the pads and getting clean ones will fix the issue. WRONG!

You must clean the TUBE which is fully caked in with ink inside the tube as well as REPLACING the pads under the printer. Stuffed tubes are the main cause of Epson printers no longer printing as well as ink filled pads.

Go quickly to fixyourownprinter.com to find out the service manual (so you can get at the tube and ink pads as well as where to buy new ones) and to purchase the tube cleaner which gives you a needle to fill with this solution to clear the tube from the caked in ink and free the printer from further issues.

All of this can be done WITHOUT the printer being on.

Any other questions post them here :)

Good Luck

Download this program... SSC Service utility Google it, its free, Firstly clean the ink pads just wash them out and re fit. Then run the program and do a counter reset once completed do a soft reset and you printer will be back running.
Hope this helps