Brahma Control box NDTE31 37611000

The Brahma NDTE31 control box (SKU 37611000) is a microprocessor-based controller for automatic ignition and flame supervision on atmospheric or progressive (modulating) burners using gas or liquid fuel. It operates in intermittent mode with a supply voltage of 220–240 V, a safety time of 5 seconds, and a pre-purge time of 5 seconds. Flame detection is via an ionisation sensor or photodiode (FD), with a flame-loss reaction time of less than 1 second. The unit features a volatile lockout with automatic reset, weighs 0.2 kg, has protection class IP00, and is housed in heat-resistant plastic. Dimensions are 10.7 x 8.1 x 3.6 cm.

When selecting a replacement control box of this type, verify the supply voltage, safety time, and pre-purge time match the burner's requirements. Ensure the flame detector type (ionisation or photodiode) is compatible with the existing sensor. Check the mounting dimensions and protection class to fit the burner housing. The unit must be wired according to the manufacturer's diagram, and the burner's operating mode (intermittent) must align with the controller's cycle.

Typical failures of this kind include no ignition spark, failure to detect flame, or lockout without reset. The burner may fail to start, shut down shortly after ignition, or cycle repeatedly. Check the flame sensor, ignition transformer, and wiring connections. If the controller enters lockout, verify the fault code via LED indication and ensure the flame signal is present.