What does the Glow-worm Betacom F70 fault code mean?
The F70 fault code on the Glow-worm Betacom indicates a problem with the central heating outlet temperature sensor. This sensor is crucial for monitoring the temperature of the water leaving the boiler, and a fault can disrupt the heating system’s performance.
Common Causes
- Faulty 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 cause communication failures between the sensor and the boiler’s control board.
Can I fix it myself? (DIY)
While you can check for loose connections or visible damage, it is highly recommended to call a Gas Safe Engineer for any repairs involving gas or electrical components to ensure safety and compliance with regulations.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing the central heating outlet temperature sensor is around £120-£150. This includes the cost of the part and labour, as sensor replacements typically require professional installation.