Problems you may notice
• Oven refuses to heat or maintain temperature
• Display screen shows F3 error code
• Oven beeps repeatedly and locks out cooking functions
• Unable to start any cooking cycle
• Temperature display may show erratic or frozen readings
• Heating elements do not activate when oven is turned on
Possible Causes
• Faulty oven temperature sensor (RTD probe or thermostat)
• Loose or disconnected sensor wiring harness
• Damaged sensor connector at control board
• Temperature sensor circuit board failure
• Corroded electrical connections from humidity exposure
• Failed control board unable to read sensor signals
• Power supply fluctuations affecting sensor calibration
• Sensor positioned incorrectly or damaged from food/spill contact
Precautionary measures
• Ensure the oven is completely unplugged or the circuit breaker is switched OFF for safety
• Check that the power outlet is functioning by plugging in another small appliance
• Verify your home circuit breaker controlling the oven has not tripped; reset if necessary
• Confirm the oven door is fully closed and latched properly
• Look for any visible damage, moisture, or debris around the oven control panel
• Check that no child lock or control lock feature is accidentally activated on your model
• Allow the oven to cool for at least 30 minutes before attempting troubleshooting
• Perform a complete power reset: Turn off the circuit breaker for 60 seconds, then turn it back on
• Wait 5 minutes after power restoration before attempting to use the oven again
• If the F3 error clears and oven operates normally, monitor for recurrence
• If the error code reappears immediately or persists after these steps, contact a professional appliance repair technician to diagnose and replace the faulty temperature sensor component
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