Cofi Ignition transformer TRK2-40PVD

The Cofi TRK2-40PVD is an ignition transformer designed for low-power diesel and fuel oil burners. It operates on a supply voltage of 220–240 V and a frequency of 50–60 Hz. This induction-type transformer generates a stable high-voltage spark to ignite liquid fuel, ensuring consistent burner start-up. Its compact size facilitates installation in small burner devices, and its robust housing protects against mechanical stress, vibration, and temperature variations.

When selecting a replacement ignition transformer of this type, verify that the primary voltage (e.g., 230 V), secondary output, duty cycle, and mounting configuration match the original part. Common mounting forms include various bracket types and terminal arrangements. Measure the physical dimensions and compare the connector pattern for the high-voltage cable to ensure compatibility. The ignition cable must be silicone-insulated to withstand high voltage and heat.

Typical failures of ignition transformers include internal short circuits, open windings, or insulation breakdown. Symptoms may include no spark at the electrode, intermittent ignition, or burner lockout. Check the high-voltage cable for hardening or cracks, as a damaged cable can leak spark to ground, causing a no-flame condition that might be misdiagnosed as a faulty transformer.