Cofi Ignition transformer TRS818PC/S

The Cofi Ignition transformer TRS818PC/S is a compact ignition transformer designed for use in low-power diesel and heavy oil burners. It operates on a 230 V, 50 Hz supply and generates a high-voltage spark for ignition. The transformer features a silicone-insulated ignition cable and a compact housing, and it is manufactured in Italy. Its manufacturer code is TRS818PC/S, and it corresponds to article number 309.820.073.

When selecting a replacement ignition transformer of this type, verify that the primary voltage (e.g., 230 V) and frequency match the burner's control circuit. Check the physical mounting pattern and terminal configuration to ensure compatibility with the existing installation. The ignition cable must be silicone-insulated to withstand high voltage and heat. Confirm the manufacturer code and article number against the original part's markings or appliance documentation.

Common failure modes for ignition transformers include cracked or hardened ignition cables, which can leak the spark to earth, causing weak or no spark. This may result in the burner failing to ignite or intermittent ignition. Check the ignition cable for damage and ensure the transformer is receiving the correct supply voltage during the ignition sequence.