Cofi Ignition transformer TRK2-30PVD

The Cofi TRK2-30PVD is an ignition transformer from the TRK2 series, designed for use in burners to generate a high-voltage spark for igniting the fuel-air mixture. It operates with a supply voltage of 230 V and is active only during the ignition phase, controlled by the burner control box. The transformer features silicone-insulated ignition cables and is itself insulated for secondary circuit protection. It is de-energized once the flame is detected by the ionization or UV sensor.

When selecting an ignition transformer of this type, ensure the primary voltage (e.g., 230 V) matches the burner's supply, and the secondary voltage and current meet the ignition electrode requirements. The duty cycle must be compatible with the burner control sequence, and physical dimensions, mounting, terminal type, and cable connector pattern must match the existing installation. Always inspect the ignition cable for hardening or cracks, as a damaged 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. The burner may fail to ignite, lockout, or cycle repeatedly. Check the transformer's primary and secondary connections, and inspect the ignition cable for insulation breakdown, which can cause spark to ground instead of the electrode.