Before diving into the "how," it is crucial to understand the "why." Many users mistakenly think a reset is needed every time they refill ink. That is not the case. The Epson L1250 uses a transparent ink tank—when it is low, you simply refill it. No reset is required.
Press and hold the button and the Network Status (i) button simultaneously for about 5 seconds. How To Reset Epson L1250 Printer