Brahma Control box TGRD81 18047102

The Brahma TGRD81 control box (SKU 18047102) is a microprocessor-based combustion manager for gas or oil burners. It provides a safety time of 5 seconds and a pre-purge time of 30 seconds. It uses ionisation flame detection and supports ionisation, UV, and IR detection methods. The device operates in intermittent mode and includes an integrated high-voltage ignition transformer.

Control boxes of this type are selected by exact series and type designation, supply voltage, safety and pre-purge times, flame detection method (ionisation, UV, or IR), and the base or plug pattern. Confirm that the replacement carries the correct series designation and matches the existing wiring pattern. Check the safety time (usually stamped on the label) against the burner type. Always verify the flame detection method, as ionisation, UV, and IR systems require different control inputs and cannot be swapped without changing the detector.

Typical failures include lockout due to flame absence, ignition failure, or ionization circuit break. The equipment may shut down and require manual reset. Check the flame detector, wiring, and safety time settings.