What does the Vaillant F.22 fault code mean?

Your boiler has detected that there is not enough water inside the system to operate safely, which has caused it to shut down to prevent damage.

How much does it cost to fix Vaillant error code F.22?

Typical repair cost for the Vaillant F.22 fault is £120-250 including labour.

Locate the pressure gauge on the front of your boiler.

Dry fire protection | No water in appliance, pump cable defective, pump blocked or defective, pump output too low

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.

7 signs repair isn't worth it anymore.