Cofi Ignition transformer TRG823PC/2

The Cofi Ignition transformer TRG823PC/2 is a device that steps up the mains voltage to a level sufficient to create a spark across the ignition electrode gap in gas or oil burners. It operates with a supply voltage of 230 V and a frequency of 50 Hz. This transformer is energized only during the ignition period, as commanded by the burner control. It is categorized as an ignition transformer and is identified by the SKU TRG823PC/2.

When selecting a replacement ignition transformer of this type, the primary voltage (commonly 230 V, but also 110 V or 24 V), the required secondary voltage and current for a spark, the duty cycle, mounting arrangement, terminal type, and the connector pattern for the high-voltage cable must be considered. The high-voltage cable should be silicone-insulated to withstand heat and voltage stress. Before ordering, compare these specifications with the original part and ensure compatibility with the burner model.

Typical failures of ignition transformers include internal short circuits or open windings, which may result in no spark or a weak spark. The burner may fail to ignite or may lock out after a few attempts. Check the high-voltage cable and electrode assembly for cracks or hardening, as a damaged cable can leak current to earth and mimic a transformer fault. Also inspect for signs of overheating or burning on the transformer casing.