Neff oven will not heat, display shows E001 shortly after turning on any cooking function

Safety first: Switch off the oven at the mains isolator or consumer unit and allow it to cool completely before working on it.

• Power reset: Turn off power for 5–10 minutes, then restore power and test. Sometimes a one-off overheat event can latch the error.
• Check ventilation: Ensure cabinet cut-outs and ventilation grills around the Neff oven are not blocked by panels, foil, or stored items. Overheating can trigger the safety thermostat.
• Inspect cooling fan operation: Start a low-temperature function and listen for the internal cooling fan (top/rear of cavity). If it does not run, the oven may overheat quickly and show E001. A failed cooling fan motor or fan control on the PCB is likely.
• Test safety thermostat (thermal cut-out): Access the top of the oven (remove from housing if necessary). Locate the safety thermostat on the top panel or rear. With power disconnected, test continuity with a multimeter. An open circuit indicates a tripped or failed thermostat that usually must be replaced.
• Inspect heating elements: Look for visible damage, hot spots, or distortion on the top grill element and rear fan element. A shorted element can cause rapid overheating.

If the error returns immediately after reset, or if the cooling fan does not run, replacement of the safety thermostat and/or cooling fan assembly is recommended. Contact a qualified technician if you are not comfortable removing the oven from the cabinet.