Problems you may notice
• Oven fails to heat or reaches incorrect temperatures
• Display shows F4 error code
• Cooking cycles stop unexpectedly
• Oven beeps repeatedly and locks out all functions
• Unable to select cooking modes or adjust temperature settings
• Interior light may work but heating elements do not activate
• Preheat function cannot complete
Possible Causes
• Faulty temperature sensor (RTD probe) in the oven cavity
• Loose or disconnected sensor wiring harness
• Damaged heating element affecting sensor readings
• Control board malfunction or sensor circuit failure
• Buildup of food debris or grease around sensor location
• Power supply instability causing sensor communication errors
• Thermal fuse triggering due to overheating conditions
• Control panel software glitch or calibration error
Precautionary measures
• Verify the oven is receiving power by checking the display and oven light function
• Check your home's circuit breaker panel and reset any tripped breaker supplying the oven
• Ensure the oven door is fully closed and latches securely
• Look for any control lock feature that may be enabled on the display panel and deactivate if found
• Allow the oven to cool completely for at least 30 minutes before attempting to use it again
• Confirm the correct cooking mode and temperature settings are selected on the control panel
• Perform a full reset by switching off the circuit breaker supplying power to the oven for 60 seconds, then switch it back on
• Wait 2-3 minutes for the system to fully restart and check if the error clears
• If the F4 error persists after these steps, contact a professional appliance repair technician who can diagnose sensor and control board issues
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