What does the Glow-worm Betacom E119 fault code mean?
The E119 fault code on a Glow-worm Betacom boiler indicates low water pressure within the system. This can lead to insufficient heating and may cause the boiler to shut down to prevent damage.
Common Causes
- Low Water Pressure: This can occur due to leaks in the system or insufficient water supply.
- Pressure Relief Valve Issue: A faulty pressure relief valve may allow water to escape, leading to a drop in pressure.
Can I fix it myself? (DIY)
You can attempt to fix low water pressure by checking the pressure gauge and using the filling loop to add water to the system. However, if you suspect a leak or a fault with the boiler components, it is crucial to call a Gas Safe Engineer.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing low water pressure issues is around £150 to £250, depending on whether it involves simply repressurising the system or replacing a faulty component like the pressure relief valve.