During normal operation, a healthy residential kitchen oven will experience continuous temperature fluctuations of approximately 15 to 25 degrees Fahrenheit above and below your digital set point. This cycling occurs because mechanical thermostats and electronic control relays pulse the heating elements on and off in waves to maintain an average target temperature inside the cavity. However, if your oven swings wildly by 40, 50, or more degrees, it indicates a malfunctioning temperature sensor probe, a miscalibrated control board, or a failing heating element relay. You can troubleshoot temperature stability easily using an independent oven thermometer. You can verify normal appliance performance when observing minor, steady thermal cycling confirms that your oven maintains consistent average cooking temperatures.
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