How to fix Glow-worm Flexicom fault code F44

What does the Glow-worm Flexicom F44 fault code mean?

The F44 fault code on a Glow-worm Flexicom boiler indicates an issue with the gas pressure, which may be too low or too high for the boiler to operate safely and efficiently. This fault can prevent the boiler from igniting or functioning properly, leading to heating and hot water issues.

Common Causes

  • Low Gas Pressure: This can occur due to issues with the gas supply, such as a blockage in the gas line or a problem with the gas meter.
  • High Gas Pressure: Excessive pressure can result from a faulty regulator or incorrect installation, which can also trigger the F44 fault code.

Can I fix it myself? (DIY)

It is strongly advised to call a Gas Safe Engineer to diagnose and fix gas pressure issues, as they require specialized knowledge and tools. Attempting to fix gas-related problems without proper training can be extremely dangerous.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for resolving the F44 fault code could range from £150 to £300, depending on whether the issue is a simple adjustment or requires replacement of components such as the gas valve or regulator.