Symptoms
• Cooktop will not heat or only heats one zone while others remain inactive
• Error code E3 appears on the digital display or control panel
• All touch controls become unresponsive or locked out
• Cooktop shuts down automatically during cooking
• Fan runs continuously even when cooktop is powered off
• Burner ignition fails on gas models or heating element does not activate on electric/induction models
Possible Causes
• Thermal sensor (RTD or NTC thermistor) is faulty or has failed on the cooking zone
• Thermal sensor connector is loose, corroded, or disconnected from the control board
• Cooktop surface temperature exceeds safe operating limits due to blocked ventilation
• Control board detected an open circuit in the thermal sensor wiring harness
• Cookware or debris is blocking air vents underneath the cooktop reducing cooling
• 240V power supply (electric/induction models) or 120V control circuit (gas models) is unstable or dropping voltage
• Control module or PCB has experienced a temporary fault and requires reset
• Cracked or damaged glass on smoothtop or induction model causing sensor misreading
Safety Checks You Can Do
• Turn off the cooktop and allow it to cool for at least 30 minutes before attempting any troubleshooting
• Check your home's circuit breaker panel and verify the dedicated breaker for the cooktop is in the ON position; if tripped, switch it OFF then back ON
• For electric and induction models, verify the cooktop is properly plugged into a dedicated 240V outlet or hardwired connection
• For gas cooktop models, check that the 120V control module is connected to an active outlet and not sharing a circuit with other high-load appliances
• Inspect the cooktop surface for any visible cracks, chips, or damage on the glass or ceramic surface
• Ensure all cookware and cleaning supplies are removed from the cooktop and the area around ventilation openings is clear
• Check that burner caps and grates are seated properly and not blocking gas ports on gas models
• Wipe the cooktop surface and control panel with a dry cloth to ensure no moisture or spilled liquid is activating error detection
• Verify touch controls are not locked by holding the lock button (if equipped) for 3-5 seconds to disable any active lock feature
• Perform a hard reset by switching the dedicated circuit breaker OFF for 60 seconds, then switch it back ON
• Power the cooktop back on and test one zone at low temperature to see if error code returns
Safety First
Always disconnect the appliance from power before performing any checks. If you are unsure about any step, please contact a qualified technician.