Cofi Ignition transformer TRS818C/29

The Cofi Ignition transformer TRS818C/29 is a step-up transformer designed for use in burners and boilers. It operates on a supply voltage of 230 V at 50 Hz and provides a secondary voltage of 8 kV, split into two outputs of 4 kV each, with an output current of 0.9 A. This induction-type transformer is housed in a robust body and features silicone-insulated ignition cables. It is intended to work with ignition electrodes and a control box to generate sparks for fuel ignition.

When selecting a replacement ignition transformer of this kind, verify that the primary voltage, secondary voltage, and output current match the burner's requirements. Check the mounting dimensions and terminal configuration to ensure compatibility with the existing setup. The ignition cable must be silicone-insulated to withstand high voltage and temperature. Always confirm specifications from the burner manufacturer's documentation or the existing part marking before ordering.

Common failure modes for ignition transformers include cracked or hardened ignition cables that leak spark to ground, leading to weak or no spark. The equipment may fail to ignite or exhibit intermittent ignition. Check the condition of the cable and electrode before concluding the transformer is faulty. Overheating or mechanical damage can also cause internal short circuits, resulting in a complete loss of spark.