What does the Glow-worm Betacom F64 fault code mean?
The F64 fault code on a Glow-worm Betacom boiler indicates a problem with the central heating inlet temperature sensor. This fault suggests that the boiler is unable to detect the correct temperature of the water entering the heating system, which can affect its performance and efficiency.
Common Causes
- Faulty Inlet Temperature Sensor: The sensor may be malfunctioning or damaged, leading to incorrect temperature readings.
- Wiring Issues: Damaged or loose wiring connections to the sensor can disrupt the signal, causing the fault code to appear.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and gas safety regulations. Attempting to fix it yourself could pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F64 fault code is approximately £150 to £250. This includes the replacement of the inlet temperature sensor and any necessary wiring repairs, based on current parts and labour rates.