What does the Glow-worm Easicom E320 fault code mean?
The E320 fault code on the Glow-worm Easicom indicates a central heating (CH) pressure fault, which typically means that the system pressure is either too low or too high. This can lead to inadequate heating performance and potential damage to the boiler if not addressed.
Common Causes
- Low Water Pressure: This can occur due to leaks in the heating system or insufficient water in the system.
- High Water Pressure: This may be caused by a faulty pressure relief valve or an issue with the expansion vessel.
Can I fix it myself? (DIY)
If the issue is low pressure, you can attempt to repressurise the system by using the filling loop. However, if the pressure is high or if you are unsure, it is strongly advised to call a Gas Safe Engineer to avoid any gas or electrical hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing a pressure fault on a Glow-worm Easicom boiler is approximately £150 to £250. This includes potential replacement of components like the pressure relief valve or expansion vessel, which can be costly if they are faulty.