What does the Glow-worm Betacom F36 fault code mean?
The F36 fault code on the Glow-worm Betacom indicates a fault with the domestic hot water (DHW) sensor. This typically means that the sensor is either malfunctioning or has failed, preventing the boiler from accurately detecting the water temperature.
Common Causes
- Faulty DHW Sensor: The sensor may be damaged or defective, leading to incorrect readings.
- Wiring Issues: Damaged or loose wiring connections to the DHW sensor can cause communication failures.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to diagnose and repair this issue, as it involves gas and electrical components that require professional expertise.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing the DHW sensor on a Glow-worm Betacom is around £150 to £200. This includes the cost of the part and labour, as sensor replacement typically requires professional installation.