Kromschroder High-voltage ignition transformer E4718/54 84336271

This ignition transformer is an HF ignition device from Kromschroder, model E4718/54 (SKU 84336271). It is made in Germany and comes in a compact housing. It is used to generate the high voltage needed for spark ignition of gas burners. The transformer steps up the supply voltage during the ignition phase to produce a spark at the ignition electrode.

Ignition transformers of this type are selected by primary voltage, secondary voltage and current, duty cycle, and mounting arrangement. Before ordering, ensure the primary voltage (typically 230 V, but 110 V and 24 V exist) matches the burner control. The terminal type and the connector pattern for the high-voltage cable must correspond to the existing wiring. Check the condition of the ignition cable, as hardened or cracked insulation can cause faults that appear to be transformer failures.

When an ignition transformer of this kind fails, the burner typically does not ignite or the flame is unstable. The most common visible problem is a spark leaking to earth through a hardened or cracked ignition cable, which can mimic a transformer fault. Before replacing the transformer, inspect the cable and the electrode connection; often the issue is there. Internal failure is less frequent but possible.