What does the Heatline F5 fault code mean?

Your boiler has detected an issue with how it clears waste gases or a blockage in the drainage pipe, causing it to shut down for safety.

How much does it cost to fix Heatline error code F5?

Typical repair cost for the Heatline F5 fault is £100-£250 including labour.

Check the white plastic condensate pipe outside for signs of freezing or blockage.

Air pressure switch / Fan fault/ Condensate blocked

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

Six most common causes of dropping pressure.

Each noise points to a different fault.

Safety-critical — turn off, read this.