Cofi Ignition transformer TRE820PS4

The Cofi TRE820PS4 is an ignition transformer designed for use in gas and diesel burners, as well as equipment operating on light and heavy liquid fuel. It operates on a 230 V supply voltage at 50 Hz and provides a secondary voltage of 8 kV. The transformer has compact dimensions of 90 mm in length, 70 mm in width, and 60 mm in height, and comes in a compact housing. It is manufactured in Italy and features silicone-insulated ignition cables.

When selecting an ignition transformer of this type, ensure the primary voltage (e.g., 230 V), secondary voltage, and current match the burner's requirements. The mounting configuration and terminal layout must be compatible with the existing harness. Measure the physical dimensions to confirm fit within the burner housing. Also, verify the cable connector pattern matches the burner's wiring.

Common failure modes include cracked or hardened ignition cables, which can leak the spark to earth, causing a weak or absent spark. This may appear as a faulty transformer. Check the cables and electrode condition before replacing the transformer, as a poor cable is a frequent cause of failure.