Brahma Control box CE31FR 37173614

The Brahma CE31FR control box (SKU 37173614) is a microprocessor-based burner management unit for progressive (modulating) gas burners with forced draft. It manages the combustion process, including pre-purge (1.5 s), ignition, flame monitoring via ionisation, and safety shutdown. The unit operates at 230 V, 50/60 Hz, with a safety time of 10 s and a flame loss reaction time of less than 1 second. It features electric reset (volatile lockout) and uses Molex connectors. The device is certified to EN298:2003 (CE PIN 0694BR1154), has a net weight of 0.17 kg, and dimensions of 107 x 81 x 36 mm.

When selecting a replacement control box of this type, verify the supply voltage, safety time, pre-purge time, and flame detection method (ionisation) match the burner's specifications. The unit must be compatible with the burner's stage type (progressive/modulating) and air supply (forced draft). Ensure the connector type (Molex) and mounting position (any) are suitable for the existing wiring and enclosure. The protection class is IP00, so installation must be in a dry, ventilated location.

Typical failures of this kind of control box include lockout due to flame loss, which triggers a safety shutdown and requires an electric reset (power cycle). Other issues may arise from a faulty ionisation electrode, leading to false flame detection or failure to detect flame. Check the ionisation current (minimum 1.2 µA) and cleanliness of the electrode. The unit may also fail to start if the pre-purge or safety times are incorrect, or if there is a wiring fault.