Caple oven heats but temperature is wildly inaccurate or overshoots and burns food.

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

• Locate the sensor: Inside the oven cavity, find the thin metal probe (usually at the rear or top). From the rear of the appliance, trace its wiring to the main PCB.
• Check for damage: Inspect the probe for deformation, heavy grease build-up, or signs of overheating. Clean gently with a non-abrasive cleaner if coated in grease.
• Test resistance: Disconnect the sensor plug and measure resistance with a multimeter. At room temperature (20–25°C), most Caple NTC sensors read around 500–1100 Ω (exact value varies by model). If reading is open circuit or shorted (near 0 Ω), replace the sensor.
• Inspect connector: Ensure the sensor plug is fully seated on the PCB and that pins are not oxidised. Clean lightly if needed and reconnect.
• Recalibrate (if available): Some Caple models allow temperature offset adjustment in the settings menu. After replacing the sensor, run a test bake with an oven thermometer and adjust offset if the manual permits.
• If readings are correct but error persists: The main PCB’s temperature input circuit may be defective and will likely need replacement by a professional.