Nuway Plug-In Transformer T16BG 4mm C040029

The Nuway C040029 is a plug-in type ignition transformer carrying the T16BG designation and a 4mm specification, used in Nu-way oil-fired boiler and burner assemblies. It raises the supply voltage to the level required to strike an ignition spark across the burner electrodes. The plug-in format seats directly into the burner control housing, so it can be swapped without rewiring the burner harness.

• Burner locks out on start-up with no ignition spark at the electrodes
• No spark despite a clean, correctly set electrode gap
• Intermittent ignition, repeated lockouts or a spark that comes and goes
• Transformer buzzes, runs hot or shows visible burning or discolouration
• Spark present but weak or erratic, causing delayed or failed light-up

• Confirm the appliance model against the manufacturer's parts list
• Check the existing transformer's designation and plug-in connection match
• Verify the 4mm specification matches the unit being removed
• Isolate the power supply before removing the old transformer