Oven displays E1 and will not heat; fan and light may still operate.

Safety first: Isolate the oven from mains power before removing any panels.

• Locate the sensor: Inside the oven cavity, look for a small metal probe (usually at the rear or upper rear wall) secured with 1–2 screws. This is the temperature sensor (NTC).
• Check mounting and wiring: Remove the screws and gently pull the sensor forward. Inspect the wiring for cuts, burns, or breaks. Follow the cable to the rear of the oven and ensure the connector to the main control PCB is firmly seated.
• Test continuity (if you have a multimeter): Disconnect the sensor from the harness and measure resistance across the two sensor terminals. A typical NTC sensor will read between 500–1200 Ω at room temperature (exact value varies by model). If the meter shows OL (open circuit), the sensor is faulty.
• Replace if faulty: Install a compatible Russell Hobbs oven temperature sensor (NTC) by routing the new cable along the original path and securing it away from sharp edges and hot elements. Refit the sensor probe with its screws.
• Reassemble and test: Refit covers, restore power, and test a low-temperature bake cycle to confirm the error is cleared.