What does the Glow-worm Betacom F55 fault code mean?
The F55 fault code on the Glow-worm Betacom indicates a fault with the domestic hot water (DHW) temperature sensor. This issue can prevent the boiler from heating water effectively, leading to inadequate hot water supply.
Common Causes
- Faulty Temperature Sensor: The sensor may be malfunctioning or damaged, causing incorrect readings.
- Wiring Issues: Damaged or loose wiring connections to the sensor can disrupt its function and lead to the fault code.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to diagnose and repair this issue, as it involves electrical components and safety risks. Attempting to fix it yourself may void warranties or lead to further complications.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for the F55 fault code is around £150 to £200, primarily for the replacement of the temperature sensor and associated labour. This cost reflects the specific nature of the part and the expertise required for installation.