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162.00EUR
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Description
The Honeywell SM11450U is an electronic control board (PCB) for gas boilers, identified by type designation CS0171B-LS with revisions Rev.A and Rev.B. It is designed for Baxi and Westen boiler series, including Eco 240i/280i, Eco Compact, Eco4s, Main Combi Eco, and Westen Energy 1.240/1.280. The board manages gas supply control, ignition sequence, and safety functions, reading inputs from sensors and driving components like the fan and gas valve. It is also known under part numbers 0051BP2590 and type SMCOE01.
Choosing and fitting
Parts of this type are selected by exact boiler make and model; boards are not interchangeable across series even within the same brand. Verify the manufacturer code and catalogue reference against the original part, and ensure the board's supply voltage, safety times, flame detection method (ionisation or UV), and physical mounting and connector pattern match the boiler's wiring harness.
