What does the Glow-worm Easicom E500 fault code mean?
The E500 fault code on the Glow-worm Easicom indicates a short circuit in the flue gas pressure switch. This issue prevents the boiler from operating safely, as it cannot accurately detect the pressure of the flue gases.
Common Causes
- Blocked Flue: A blockage in the flue can cause incorrect pressure readings, leading to the switch malfunctioning.
- Faulty Pressure Switch: The pressure switch itself may be defective, resulting in a short circuit and erroneous signals to the boiler control board.
Can I fix it myself? (DIY)
It is highly recommended to call a Gas Safe Engineer for 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 E500 fault code is around £150 to £250, primarily due to the potential need for a new flue gas pressure switch and associated labour costs.