What does the Glow-worm Betacom F87 fault code mean?
The F87 fault code indicates a malfunction with the domestic hot water (DHW) outlet temperature sensor in the Glow-worm Betacom boiler. This sensor is responsible for monitoring the temperature of the water being supplied, and a fault can lead to improper heating or safety issues.
Common Causes
- Faulty Temperature Sensor: The sensor may be damaged or malfunctioning, leading to incorrect temperature readings.
- Wiring Issues: Damaged or loose wiring connections to the sensor can disrupt its functionality, 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 safety risks. Attempting to fix it yourself could lead to further damage or safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing the DHW outlet temperature sensor is around £120 to £180. This includes the cost of the part and labour, as sensor replacements typically require professional installation to ensure safety and compliance with regulations.