Navien Ignition Transformer 30002476A

The Navien ignition transformer 30002476A supplies the high-voltage spark that lights the burner in NCB-CE ERP series boilers. It forms part of the ignition circuit, working with the ignition electrode to establish a flame at start-up. It is used across both system and combination models in the NCB-CE ERP range.

• The boiler attempts to fire but there is no spark at the ignition electrode
• Repeated ignition lockouts or failed start-up sequences
• A weak, intermittent or inconsistent spark
• Visible burning, cracking or arcing marks on the transformer body
• Audible clicking from the transformer without the burner lighting

• Confirm your boiler model and serial number against the manufacturer's parts list
• Check the part number 30002476A matches the component being removed
• Inspect the ignition electrode, leads and connections, as faults here can mimic a failed transformer
• Isolate the electrical supply before carrying out any inspection or replacement