Brahma Control box CM191N.2 20085601

The Brahma CM191N.2 control box (SKU 20085601) is a microprocessor-based burner management unit for automatic ignition control, flame monitoring, and safe operation of atmospheric gas burners with progressive (modulating) power control. It operates in intermittent mode and is suitable for burners with or without forced air supply. The device features ionisation flame detection with a reaction time of less than 1 second, a built-in high-voltage ignition transformer, and two independent safety contacts. It is certified to EN 298:2003 and CE, with a supply voltage of 220–240 V, protection class IP00, and a body made of self-extinguishing plastic. The unit is designed for a service life of over 250,000 cycles under maximum load and is manufactured in Italy.

Parts of this type are selected by matching the control box model and article number to the original unit's marking, as timing parameters (pre-purge, safety, and waiting times) may vary between versions. Installation involves mounting on a DIN rail or by screws in any position, but due to IP00 protection, it must be placed in a protective enclosure. Before ordering, verify the supply voltage, flame detection method (ionisation), and compatibility with the burner's fuel type and stage control. The connection base and electrodes are typically sold separately and must be checked for compatibility.

Common failure modes for control boxes of this kind include lockout due to flame loss, ignition failure, or open ionisation circuit, which requires manual reset after eliminating the cause. Symptoms may include the burner failing to start, repeated lockouts, or no spark. Check the ionisation electrode for contamination or incorrect gap, verify the supply voltage and wiring, and ensure the internal fuse (non-replaceable) has not blown. If the unit does not respond to reset, it may need replacement.