What does the Heatline F1 fault code mean?

Your boiler has failed to ignite, meaning it cannot light the gas to provide heat or hot water for your home.

How much does it cost to fix Heatline error code F1?

Typical repair cost for the Heatline F1 fault is £120-350 including labour.

Check that your gas pre-payment meter (if you have one) has credit.

Ignition 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.

Almost always a stuck diverter valve on combis.

Lockout fault with a reset-needed pattern.

Older boilers — thermocouple, draught, gas supply.