Honeywell Electronic control board SM11472U

This microprocessor-based electronic control board is designed for wall-hung boilers. It uses ionisation or other flame detection and incorporates complete safety algorithms; on flame failure it goes to lockout. The board is manufactured by Honeywell in the USA/Germany. Its model is SM11472, with SKU SM11472U and article number 711050800.

Control boards of this type must be matched exactly to the boiler model; they are generally not interchangeable across boiler series, even within the same brand. Selection is made by the original part number or the manufacturer's specific code, cross-referenced against the boiler's documentation. No additional specifications such as voltage or dimensions are available, so the board should be ordered only after confirming the exact replacement for the equipment.

When a control board of this kind fails, the equipment may show an error, fail to respond to commands, or operate intermittently. The board monitors sensors and enforces safety algorithms; upon detecting a fault, it goes into lockout. Checking the board itself for correct processing of pressure, temperature, and flame-ionisation signals can help identify the cause.