What does the Heatline F.28 fault code mean?

Your boiler has tried to light itself three times but failed, meaning your heating and hot water have stopped working.

How much does it cost to fix Heatline error code F.28?

Typical repair cost for the Heatline F.28 fault is £100-350 including labour.

Check if your gas meter has credit and the isolation valve is open.

After three successive failed ignition attempts, the system switches to fault mode.

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

Almost always a stuck diverter valve on combis.

Lockout fault with a reset-needed pattern.

Older boilers — thermocouple, draught, gas supply.