How to fix Glow-worm Betacom fault code F30

What does the Glow-worm Betacom F30 fault code mean?

The F30 fault code on a Glow-worm Betacom boiler indicates a pump fault, which typically means that the central heating pump is either not operating correctly or has failed. This can lead to insufficient circulation of water within the heating system, causing the boiler to shut down to prevent damage.

Common Causes

  • Blocked Pump: Debris or sludge in the system can obstruct the pump, preventing it from functioning properly.
  • Electrical Fault: Issues with the wiring or connections to the pump can lead to a failure in operation.

Can I fix it myself? (DIY)

It is recommended to call a Gas Safe Engineer for this issue, as working with the boiler’s electrical components and pump can be dangerous. Attempting to fix it yourself may void warranties or lead to further complications.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for a pump replacement on a Glow-worm Betacom boiler is around £300 to £400. This includes parts and labour, as the pump itself typically costs between £100 and £200, with the remainder covering the engineer’s time and expertise.