Error Code E-2

No wireless network names (SSID) found when searching for Wi-Fi networks.

? What Causes This

Router or access point is off, wireless name may not be configured correctly, or network configuration on the printer needs verification.

✓ How to Fix It

Turn on the router/access point and confirm SSID configuration. Check if the correct SSID of your desired device is properly set up. If needed, seek assistance from a network administrator.

Source: page 43 of the official manual

From the manual

This error code appears in:

Epson ET-2800 EcoTank All-in-One Printer