What does the Glow-worm Easicom E590 fault code mean?
The E590 fault code on the Glow-worm Easicom indicates that the flue gas temperature sensor is reporting a temperature that is stuck or not changing as expected. This can lead to safety concerns, as the boiler may not be able to operate efficiently or safely.
Common Causes
- Faulty Flue Gas Temperature Sensor: The sensor may be malfunctioning or damaged, causing it to provide incorrect readings.
- Blocked Flue: A blockage in the flue system can prevent proper gas flow, leading to abnormal temperature readings.
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 the E590 fault could be around £150 to £250, primarily for replacing the flue gas temperature sensor and any necessary labour charges. This estimate reflects the specific nature of the fault and the expertise required for safe repairs.