What does the Glow-worm Easicom E550 fault code mean?
The E550 fault code on the Glow-worm Easicom indicates a flue gas temperature fault, which suggests that the boiler is detecting an abnormal temperature in the flue system. This can lead to inefficient operation and potential safety hazards if not addressed promptly.
Common Causes
- Blocked Flue: A blockage in the flue can prevent proper venting of exhaust gases, causing temperature readings to rise.
- Faulty Temperature Sensor: A malfunctioning temperature sensor may provide inaccurate readings, leading to the E550 fault code being triggered.
Can I fix it myself? (DIY)
It is highly recommended to call a Gas Safe Engineer to diagnose and repair this issue, as it involves gas and electrical components that can be dangerous if handled improperly.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the E550 fault could range from £150 to £300, depending on whether the issue is a blocked flue or a faulty sensor, with sensor replacements typically costing around £100 plus labour.