What does the Glow-worm Easicom E790 fault code mean?
The E790 fault code on the Glow-worm Easicom indicates that the boiler is experiencing an issue with flue gas pressure not responding as expected. This can lead to inefficient operation and potential safety risks if not addressed promptly.
Common Causes
- Blocked Flue: A blockage in the flue system can prevent proper gas flow, leading to pressure issues.
- Faulty Pressure Sensor: A malfunctioning pressure sensor may not accurately detect the flue gas pressure, triggering the fault code.
Can I fix it myself? (DIY)
It is strongly advised to call a Gas Safe Engineer for this issue, as it involves gas and electrical components that require professional handling for safety reasons.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the E790 fault could range around £150 to £300, depending on whether the issue is a blocked flue or requires sensor replacement, which can be more expensive.