Cofi Ignition transformer TRS812PCISO

The Cofi TRS812PCISO is a compact ignition transformer designed to generate a high-voltage spark for igniting fuel in gas and liquid fuel burners, boilers, and heat generators. It steps up the primary voltage to a level sufficient to ionize the air-fuel mixture, ensuring fast and stable burner startup. This model is suitable for use in professional heating and industrial equipment.

Ignition transformers of this type are selected by matching the primary voltage (e.g., 230 V, 110 V, or 24 V), secondary voltage and current output, duty cycle, and physical mounting arrangement. The terminal block design and high-voltage cable connector pattern must match the burner wiring. Check the fixing points and orientation, as the transformer may be mounted directly on the burner or remotely. Verify compatibility with the control box through the wiring diagram, as some burners use a dedicated transformer with a specific pin arrangement.

Common failure modes include cracked or hardened high-voltage cable insulation, which can leak the spark to earth and mimic a transformer failure. Other issues may involve internal short circuits or open windings, leading to weak or no spark, resulting in burner ignition failure or intermittent operation. Check the high-voltage cable integrity and measure the secondary output with a suitable tester to diagnose.