What does the Glow-worm Energy F94 fault code mean?
The F94 fault code on a Glow-worm Energy boiler indicates a central heating gas supply fault. This typically means that the boiler is not receiving the necessary gas supply to operate the heating system effectively.
Common Causes
- Blocked Gas Supply: A blockage in the gas supply line can prevent gas from reaching the boiler.
- Faulty Gas Valve: A malfunctioning gas valve may not open properly, disrupting the gas flow to the boiler.
Can I fix it myself? (DIY)
It is strongly advised to call a Gas Safe Engineer for any issues related to gas supply or electrical components. Attempting to fix these problems without proper training can be dangerous.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving a F94 fault could be around £150 to £250, primarily depending on whether the issue is a blocked gas line or a faulty gas valve that needs replacement.