What does the Main E17 fault code mean?

Your boiler has attempted to light the flame but has failed to stay on, so it has shut itself down for safety.

How much does it cost to fix Main error code E17?

Typical repair cost for the Main E17 fault is £120-250 including labour.

Flame failure

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Lockout fault with a reset-needed pattern.

Older boilers — thermocouple, draught, gas supply.

7 signs repair isn't worth it anymore.