What does the Glow-worm Easicom E330 fault code mean?
The E330 fault code on the Glow-worm Easicom indicates a problem with the domestic hot water (DHW) flow switch. This fault typically means that the flow switch is either stuck, faulty, or not detecting water flow properly, which can prevent the boiler from heating water.
Common Causes
- Faulty Flow Switch: The flow switch may be defective or worn out, leading to incorrect readings.
- Blocked Water Path: A blockage in the water supply line can prevent adequate flow, causing the switch to fail to activate.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to diagnose and repair this issue, as it involves gas and electrical components that require professional handling.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for the E330 fault could be around £150 to £250, primarily for replacing the flow switch and any associated labour costs. This estimate reflects the typical price for parts and service in the UK.