What does the Glow-worm Betacom F27 fault code mean?
The F27 fault code on the Glow-worm Betacom indicates a problem with the water temperature sensor. This fault typically arises when the sensor is faulty or there is an issue with the wiring connected to it.
Common Causes
- Faulty Water Temperature Sensor: The sensor may be malfunctioning, causing incorrect readings and triggering the fault code.
- Wiring Issues: Damaged or loose wiring connections to the sensor can lead to communication failures, resulting in the F27 error.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and could pose safety risks if not handled properly.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for the F27 fault, including parts and labour, is approximately £150-£200. This includes the replacement of the water temperature sensor and any necessary wiring repairs.