Fida Ignition transformer TC101S1

The Fida Ignition transformer TC101S1 is a compact ignition transformer designed for gas boilers and burners. It operates with a supply voltage of 400 V and provides a secondary voltage of 10 kV with a secondary current of 20 mA. The transformer has a duty cycle of 100%, allowing continuous operation, and features a single pole. Its compact design facilitates installation in confined spaces.

When selecting a replacement ignition transformer of this kind, verify that the primary voltage matches the burner control output and that the secondary voltage and current meet the electrode gap requirements. The mechanical dimensions and fixing centres must correspond to the existing mounting. Check the terminal or cable connector pattern to ensure compatibility. Inspect the high-tension cables for signs of ageing or damage before installation.

Ignition transformers of this kind may fail due to insulation breakdown, overheating, or mechanical damage. Symptoms include weak or no spark at the ignition electrode, intermittent ignition, or failure to ignite the burner. Check the high-tension cables for cracks or hardening, as these can leak the spark to earth and mimic a faulty transformer. Verify the primary voltage supply and secondary output with a multimeter to diagnose the issue.