Cofi Ignition transformer TRG1230

The Cofi TRG1230 is an ignition transformer designed to generate a high-voltage spark for automatic ignition systems in gas and liquid fuel burners. It operates on a 230 V supply at 50 Hz, drawing 2.1–2.3 A, and provides two high-voltage outputs at 14 kV total (2 x 7 kV). The transformer is energised only during the ignition phase, as controlled by the burner control. Its dimensions are 150x87x80 mm, with a net weight of 2.71 kg and gross weight of 2.785 kg. The ignition cables are silicone-insulated to withstand high voltage and heat.

When selecting a replacement ignition transformer of this type, ensure the primary voltage (e.g., 230 V, 110 V, or 24 V), secondary voltage and current, duty cycle, mounting pattern, terminal type, and cable connector layout match the original. Measure the physical dimensions and mounting hole spacing to confirm compatibility. Check the number of high-voltage outputs and the type of ignition cable insulation (e.g., silicone) required for the application.

Common failure modes include cracked or hardened ignition cables that leak spark to earth, mimicking a transformer failure. The equipment may fail to ignite or exhibit intermittent sparking. Check the cables and connectors for damage before condemning the transformer. Other issues can include internal short circuits or open windings, leading to no spark output.