The Glow-worm 0020023825 Main Printed Circuit Board (BMU) is a genuine replacement control board designed for use in Glow-worm Flexicom and Ultracom boilers. This PCB functions as the boiler’s main control unit, managing all core operational and safety processes to ensure reliable and efficient performance.

Function & Purpose

The main printed circuit board acts as the central “brain” of the boiler. It processes signals from internal sensors, thermostats, and safety devices, then controls ignition sequences, burner operation, fan control, and system diagnostics. If abnormal conditions are detected, the board initiates protective shutdowns to maintain safe operation. Replacing a faulty BMU PCB helps resolve issues such as ignition failure, intermittent operation, and recurring fault codes.

Compatibility

This control board is engineered specifically for compatible Glow-worm Flexicom and Ultracom boiler models that require part number 0020023825. It is manufactured to original equipment specifications to ensure correct fitment and dependable performance when installed in the appropriate appliance.

Build Quality

As an authentic Glow-worm spare part, the 0020023825 Main PCB is produced to high manufacturing standards. The electronic components and circuitry are designed to withstand the electrical and thermal demands of boiler operation, providing long-term reliability and stable control.

Ideal Applications

This PCB is ideal for heating engineers and service technicians carrying out diagnostics or repairs on compatible Glow-worm boilers. It is particularly suitable when control faults, ignition problems, or persistent error codes indicate a failing main control board, helping to restore safe, efficient, and reliable boiler operation.