What does the Glow-worm Energy F76 fault code mean?
The F76 fault code indicates a problem with the central heating (CH) mixing valve in the Glow-worm Energy boiler. This fault typically suggests that the mixing valve is either stuck or not functioning correctly, affecting the heating system’s performance.
Common Causes
- Stuck Mixing Valve: The valve may be physically stuck due to debris or wear, preventing it from opening or closing properly.
- Electrical Fault: There could be an issue with the electrical connections or the actuator that controls the mixing valve, leading to a failure in operation.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as working on gas appliances can be dangerous. Attempting to fix electrical or gas-related problems without proper training can lead to serious safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for fixing the mixing valve issue is around £250 to £350. This includes the cost of the replacement part and labour, as mixing valves can be complex components requiring professional installation.