The Glow-worm printed circuit board is the boiler's central control. It controls and monitors every process that occurs via the thermostats, sensors and switches. It also enforces the safety protocols, making sure that the boiler ceases to function if any of the internal readings point to any fault in the boiler's operation. The printed circuit board is effectively the brain of the boiler. It is programmed to ensure everything is running as it should.

Brand Name	Glow-worm