What does the Glow-worm Energy F45 fault code mean?
The F45 fault code on the Glow-worm Energy boiler indicates a central heating (CH) temperature fault, which suggests that the boiler is unable to maintain the desired temperature in the heating system. This can lead to inadequate heating performance and may require immediate attention.
Common Causes
- Faulty Temperature Sensor: A malfunctioning temperature sensor can provide incorrect readings, causing the boiler to shut down to prevent overheating.
- Blocked Heat Exchanger: A blockage in the heat exchanger can restrict water flow, leading to temperature discrepancies and triggering the fault code.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves gas and electrical components that require professional handling. Attempting DIY repairs could pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F45 fault could be around £150 to £250, primarily depending on whether the temperature sensor needs replacement or if the heat exchanger requires cleaning. Professional labour and parts will contribute to the overall cost.