How to fix Glow-worm Easicom fault code E133

What does the Glow-worm Easicom E133 fault code mean?

The E133 fault code on the Glow-worm Easicom indicates that the boiler has failed to detect a flame during operation. This can prevent the boiler from heating water and may require immediate attention to restore functionality.

Common Causes

  • Faulty Ignition Electrode: If the ignition electrode is damaged or dirty, it may not create a spark to ignite the gas.
  • Gas Supply Issues: A blockage or interruption in the gas supply can prevent the boiler from receiving the necessary fuel to ignite.

Can I fix it myself? (DIY)

It is recommended to call a Gas Safe Engineer for any issues related to gas or electrical components. Attempting to fix these problems without proper training can be dangerous.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for resolving the E133 fault could be around £150 to £250, depending on whether the ignition electrode needs replacement or if there are gas supply issues that require more extensive work.