Brahma Control box FM11 37010010

The Brahma FM11 control box (SKU 37010010) is a burner control unit for intermittent-cycle atmospheric gas burners without a fan. It manages the full control cycle from pre-purge and ignition to continuous flame monitoring and safety shutdown. The device operates at 220–240 V, has a safety time of 10 seconds, and a pre-purge time of 1.5 seconds. It uses ionisation flame detection and includes a built-in ignition transformer. This unit is a direct OEM equivalent for Sime boilers with part numbers 6178830 and 6178834, fitting models RX 19, RX 26, RX 37, RX 48, and RX 55. Its net weight is 0.17 kg, and it has an IP00 protection class.

Parts of this type are selected by matching the supply voltage, safety time, pre-purge time, and flame detection method to the burner's requirements. The control box must be compatible with the burner's electrical connections and mounting base; typically, a separate base is required for installation. Ensure the unit is installed in a dry, well-ventilated location, as IP00 protection requires enclosure in a protective cabinet. Verify the OEM part number or model compatibility with the existing equipment before ordering.

When control boxes of this kind fail, the burner may fail to ignite, lock out after a safety shutdown, or shut down unexpectedly during operation. Common issues include loss of flame signal due to a faulty ionisation electrode, internal component failure, or incorrect wiring. Check the flame detection circuit, gas supply, and reset button operation. If the unit locks out, it requires a manual reset after addressing the root cause.