Unfortunately, I have no personal experience with the model of printer
you own. On most Epson printers, there is a point pre-programmed into
the printer, based upon the size of the waste ink pads and amount of ink
that is extracted from the heads with the cleaning and purging cycles,
when the waste ink pads are considered "filled".
Usually, when this number is reached, the LEDs on the front panel flash,
usually in an alternating pattern.
The fix is to either have the waste ink pads replaced by an authorized
repair service, replace or clean them yourself (they are not easy to get
at on some models) and/or to just reset the counter, taking the risk
that the pads could overflow and make a mess of ink below the printer.
Most Epson printers can have the waste pad counters reset via a series
of button presses on the front panel when in a special access mode. I
understand some of the newer printers may have this reset only via
software. The Russian program has many reset codes in it via software
control.
Art