Cofi Ignition transformer TRE820P

The Cofi TRE820P is a single-pole ignition transformer with a supply voltage of 230 V and a secondary voltage of 8 kV, operating at 50 Hz. It is designed for gas and dual-fuel burners, providing a high-voltage discharge to the ignition electrode during the ignition period. This transformer is housed in a compact enclosure and is compatible with burners from COFI, CIB Unigas, Riello, Ecoflam, and other brands. It is an OEM equivalent to the FIDA Compact 8/20PM P.

When selecting an ignition transformer of this type, verify that the primary voltage (e.g., 230 V) and frequency match the burner's supply, and that the secondary voltage and current rating are appropriate for the electrode gap. Check the mounting dimensions, terminal types, and high-voltage cable connector pattern to ensure compatibility with the existing wiring and electrode assembly. The transformer operates only during the ignition sequence, so the duty cycle must align with the burner control's safety time.

Typical failures include no spark at the electrode, intermittent ignition, or a spark that leaks to ground due to cracked or hardened ignition cables. The burner may fail to light or lock out after the safety time if the transformer does not produce sufficient voltage. Check the transformer's primary voltage and secondary output with a suitable meter, and inspect the ignition cable for insulation damage before replacing the unit.