There is an alternative approach from my googling, maybe the cartridge (which is located at the printer head) is empty. Even though the ink tank is full, the air is trapped in the cartridge.
You need of any our Technical Support agent. Please call Technical Support team at +44 203 880 7918 our experts are available 24/7 by phone.
More Info - http://epsonprinter.supportphone-number.co.uk/