Symptoms
• Cooktop will not heat or ignite burners
• Touch controls are unresponsive or frozen
• Display shows E9 error code continuously
• Some burners work while others do not respond
• Control panel beeps repeatedly when attempting to use cooktop
• Cooktop locks automatically and cannot be unlocked
• Inconsistent heating or burner performance across multiple zones
Possible Causes
• Loss of communication between control board and sensor elements due to internal wiring fault
• Faulty temperature sensor on one or more burner zones
• Cracked glass cooktop surface on electric or induction models creating sensor errors
• Loose or corroded electrical connection at the 240V/60Hz power supply for electric and induction models
• Low or unstable voltage reaching the cooktop control module
• Tripped or failing home circuit breaker dedicated to the cooktop
• Water or moisture damage to touch controls or internal circuit board
• Failed relay or control circuit component on the main board
• Incompatible or outdated cooktop firmware
• Defective burner ignition sensor on gas models with electronic controls
Safety Checks You Can Do
• Turn off the dedicated home circuit breaker for your cooktop for 60 seconds, then switch it back on to perform a hard reset
• Check that your home's circuit breaker for the cooktop has not tripped; if tripped, switch it fully off and back on
• Verify that the cooktop is properly connected to its dedicated 240V outlet for electric and induction models, or 120V outlet for gas control modules
• Inspect the glass cooktop surface on electric and induction models for cracks, chips, or damage that may affect sensors
• Ensure all burner caps and grates are seated firmly and correctly on gas models
• Check that the touch control panel is dry and free of spills or moisture; allow to air dry completely if wet
• Verify that the cooktop is not in lock mode by checking the control panel display for lock symbols
• Press and hold any control button for 3-5 seconds to attempt unlocking the cooktop if lock mode is active
• Unplug any nearby appliances or devices that may be sharing the circuit to reduce electrical load
• Ensure no cookware or objects are blocking the cooktop vents or sensor areas
• Allow the cooktop to cool completely for 30 minutes before attempting to use it again
Safety First
Always disconnect the appliance from power before performing any checks. If you are unsure about any step, please contact a qualified technician.