Electric oven will not heat, display shows E01 shortly after a heating command is selected.

Safety first: Switch off the cooker at the wall isolator and remove the fuse or switch off the circuit breaker. Confirm the appliance is completely cold before working near the oven cavity.

• Power reset: Turn off power for 5–10 minutes, then restore power and try a low-temperature bake setting. If E01 reappears, continue.
• Check sensor connection: Remove the rear panel of the cooker. Locate the oven temperature sensor (usually a thin metal probe entering the oven cavity with two wires leading to a connector). Ensure the connector to the main control board is fully seated and not burnt.
• Inspect wiring: Look for damaged, pinched, or burnt wires between the sensor and the control board. Repair or replace any damaged wiring using high-temperature-rated cable and proper crimp connectors.
• Test the sensor: With power still OFF, disconnect the sensor and measure resistance with a multimeter. A typical Zanussi NTC sensor is around 500–1100 Ω at room temperature (check service data if available). If it reads open (OL) or near 0 Ω, replace the sensor.
• Control board check: If the sensor and wiring test good but E01 persists, the electronic oven control (EOC) may be faulty and require replacement. This usually involves transferring each wire one-by-one from the old board to the new one, following the wiring diagram.

When to call a professional: If you are not comfortable using a multimeter or removing the rear panel, or if the control board appears damaged, contact a qualified Zanussi service technician.