What does the Glow-worm Easicom E300 fault code mean?
The E300 fault code on the Glow-worm Easicom indicates a system pressure fault, which typically means that the boiler’s water pressure is either too low or too high. This can lead to inefficient operation or potential damage to the system if not addressed promptly.
Common Causes
- Low Water Pressure: This can occur due to leaks in the system or insufficient water supply, causing the pressure to drop below the required level.
- High Water Pressure: This may be caused by a malfunctioning pressure relief valve or an issue with the expansion vessel, leading to excessive pressure in the system.
Can I fix it myself? (DIY)
If the issue is low pressure, you can attempt to re-pressurise the system by using the filling loop to add water until the pressure gauge reads between 1 and 1.5 bar. However, if the pressure is too high or if you suspect a gas or electrical issue, it is crucial to call a Gas Safe Engineer for safety reasons.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing a pressure fault on a Glow-worm Easicom boiler can range from £150 to £300, depending on whether it requires a simple re-pressurisation or the replacement of components like the pressure relief valve or expansion vessel.