Cofi Ignition transformer TRS818PC/4

The Cofi TRS818PC/4 is an induction-type ignition transformer designed for use in burners and boilers. It operates on a 230 V, 50 Hz supply and provides a secondary voltage of 8 kV. This transformer is manufactured in Italy and features silicone-insulated ignition cable and plug connectors for electrical connection. It is intended for short duty cycle operation, as it is energized only during the ignition phase.

When selecting a replacement ignition transformer of this type, match the primary voltage (e.g., 230 V, 110 V, or 24 V), secondary voltage and current, duty cycle, mounting dimensions, terminal type, and high-voltage cable connector pattern to the original component and burner specification. Before replacing the transformer, check the condition of the high-voltage cable; a hardened or cracked cable can cause spark leakage and mimic transformer failure.

Typical failures of ignition transformers include internal short circuits or open windings, leading to no spark or weak spark at the electrode. Symptoms on the equipment include failure to ignite, intermittent ignition, or burner lockout. Check the high-voltage cable for damage or deterioration, as a faulty cable can produce similar symptoms to a faulty transformer.