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panasonic | ovens-microwaves – Over Temp in Low-Heat Mode
Error Codes (F14): Troubleshooting, Fixes & Prevention Tips explained below.

Understanding Over Temperature in Low-Heat Settings❓

The "Over Temp in Low-Heat Mode" error occurs when the appliance detects that the internal temperature has risen significantly above the expected threshold while running in a low-temperature function. Low-heat modes such as proofing, warming, or slow-cook are designed to maintain a mild, consistent heat level. If the system registers an excessive rise in temperature, it triggers this safety error to prevent overheating of food or internal damage. This may be caused by a faulty thermostat, stuck relay, inaccurate sensor reading, or a software glitch. In most cases, the appliance will either shut down the heating function or display a warning to alert the user before any potential hazard occurs.

ovens-microwaves - Typical Causes of Overheating in Low-Temp Modes

  • Temperature sensor malfunction or miscalibration.
  • Control board sending incorrect power levels.
  • Stuck or damaged heating relay keeping the element on too long.
  • Software bug causing the system to misinterpret low-heat settings.
  • Poor airflow or internal obstruction causing localized overheating.
  • Moisture, grease, or corrosion affecting internal sensor accuracy.

ovens-microwaves - Fixing Over Temp Errors in Low-Heat Functions❓

  • Turn Off and Let It Cool

    1. Power off the appliance completely and unplug it.
    2. Allow the internal components to cool down for 30–60 minutes.

  • Inspect Temperature Sensor

    1. Use a multimeter to check the resistance of the temperature sensor.
    2. Compare the value with the recommended spec in the manual.

  • Check for Stuck Heating Relay

    1. If a relay is stuck in the ON position, it may continue to heat even in low mode.
    2. This typically requires a control board inspection or replacement.

  • Test in Other Modes

    1. Run the appliance in other modes such as Bake or Convection.
    2. If the error only occurs in low-heat mode, the issue may be programming-related.

  • Reset the Appliance

    1. After cooling and inspection, plug the appliance back in.
    2. Run a test in low-heat mode again to see if the error recurs.

  • Contact a Technician

    1. If the issue persists, contact a certified technician to diagnose the heating control circuit or replace the faulty components.

ovens-microwaves - How to Prevent Over Temp Errors in Low-Heat Use

  • Avoid placing foil or covers that block air circulation in the oven.
  • Do not run the appliance unattended in low-heat mode for long periods.
  • Use low-heat modes only as intended—check the manual for safe time limits.
  • Inspect sensors and fan operation regularly to catch malfunctions early.
  • Keep vents and internal fans clean and unobstructed.
  • Perform periodic temperature checks using an oven thermometer to verify accuracy.

FAQs About Overheating in Low-Temperature Operation❓

Question: Can I continue using the oven in other modes
Answer: Yes, but avoid low-heat modes until the issue is resolved to prevent safety risks.
Question: Is this error dangerous
Answer: It is a safety feature. While not immediately dangerous, it indicates improper temperature control.
Question: Do I need to replace the temperature sensor
Answer: Only if it tests outside expected resistance ranges. Otherwise, the control board may be at fault.
Question: Does poor airflow cause this
Answer: Yes. Blocked vents or fans can trap heat, especially in low-temp modes that rely on passive airflow.
Question: Will a reset fix the issue permanently
Answer: A reset might temporarily clear the error, but hardware problems will cause it to return.

When to Contact a Technician

If you experience any of the following issues even after completing the recommended troubleshooting steps, please contact an authorized service technician or our support team for further assistance.

  • The same error appears repeatedly after restarting or resetting the unit.
  • Multiple error codes appear simultaneously.
  • The device makes unusual noises, vibrations, or emits a burning smell.
  • The product fails to start, operate, or complete its function despite troubleshooting.
  • There are signs of electrical issues, physical damage, or leakage.
  • An unknown or unlisted error code appears on the display.

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