epson l3115 red and power button blinking

That's usually a WIC error, espeically when you get hard stop errors like "parts inside your printer need replacement" along with the hard stop :-(. Most of the newer Epsons indicate that the pad is full, but a significant number of the older models, using the 88/69/68/48 carts (as well as all prior models), display a false error, stating that a part needs replacement. (Well, it is true parts are used up, but it doesn't help you.)

That model has the NVRAM WIC flag, not a chipped pad - I know because we have this in the US and it's the rut of the ET-2000 series in the US. The 3000 and up have a modular pad. The 2400 is the closest match in the US for this one. The Epson P/N is 1749772. However, check your borderless waste pad if the printer supports it - they tend to follow. The modular padded printers are a BIT nicer in that the borderless pad lasts several cycles even with heavy borderless use but they tend to go in pairs on the low end. There's not a known part number for the borderless pad, but if you can find a SM it will have it. SM can be found here: https://www.2manuals.com/product_info.ph...

Once you swap both out (do both for your own sanity if you print borderless photos), use WICReset to clear the counter.