Glow-worm 17 Fault Code

What causes the Glow-worm 17 fault?

This fault occurs when the electrical supply entering your boiler drops to a level that is too low for the internal components to function. It is usually caused by a wider problem with the local power grid or a fault within your home's electrical wiring that prevents the boiler from receiving a steady 230V flow. In some cases, it can also mean the boiler's internal control board is failing to correctly process the incoming power.