The Glow-worm printed circuit board is the control centre of the appliance. By using the sensors, switches and thermostats, it continuously monitors every action that takes place. Additionally, it enforces safety precautions, ensuring that the boiler shuts off if any internal readings indicate a problem of any type. The boiler's printed circuit board functions as its brain and is configured to make sure everything is operating as it should.

Brand Name	Glow-worm