Don't panic! Discover how to solve the E03 error at home without professional repair help.
The E03 error triggers when the internal thermal sensor fails to communicate safely with the control board.
The appliance enters a safety lockout mode to prevent overheating when it loses its temperature reading capability.
Watch for sudden heating cessation, repetitive clicking sounds from the relays, or a frozen control display.
Frequent causes include thermal fatigue of the sensor or grease accumulation disrupting the electrical contact points.
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