De Dietrich 200005084 UC base B2 TA display board

This is a De Dietrich electronic control board, listed under the catalogue number 336.568.012 and manufacturer codes 200005084 and 336.568.012. The article is described as a UC base B2 TA display board. Parts of this type are installed in modern wall-hung boilers and serve as the central burner control. They manage the complete ignition and safety sequence: they start the fan for pre-purge, confirm airflow via the air pressure switch, energise the ignition transformer, open the gas valve, and monitor the flame signal through the ionisation electrode or a UV/IR detector. If flame is not detected within the safety time, the board enters lockout. These boards also handle modulation by adjusting fan speed and gas valve position based on temperature sensors. Selection of such a board is strictly by boiler model and series. The control electronics are matched to the specific boiler design; a board from a different series, even within the same brand, is not interchangeable. The supply voltage, safety times, pre-purge times, and flame detection method must correspond exactly to the original. When replacing a control board, confirm the boiler model and the exact part number from the original equipment label. A mismatched safety time or flame detection type creates a safety hazard, not just a functional fault. This article is a control board with a display, so it also provides operational readouts on the boiler interface. No further technical specifications or compatibility details are available from the catalogue entry.