Glow-worm Printed Circuit Board Replacement Kit GLOWWORM2000802731

The Glow-worm 2000802731 is a printed circuit board replacement kit, supplied as a complete board assembly for Glow-worm boiler electronics and controls. The PCB is the control centre of the appliance: it reads demand from the room thermostat, programmer and cylinder sensor, then sequences the fan, gas valve, pump and ignition to deliver heating and hot water. When the board fails, the boiler can lose communication with its controls or stop firing altogether, so a like-for-like replacement restores normal operation.

• The boiler does not respond to heating or hot water demand from the controls
• A blank, dim or unlit display on the appliance fascia
• Repeated lockouts or fault codes that clear only after a power cycle
• The pump, fan or diverter does not run when a demand is present
• A fuse on the board blows again immediately after replacement

• Match the part number 2000802731 against the marking on the board being removed
• Confirm the appliance model and GC number before ordering, as board variants are not interchangeable across ranges
• Check whether a gasket, seal or lead set is needed for the specific appliance before refitting