Dacor cooktop or range displays F30 and disables one or more burners

Safety first: Turn OFF the breaker and verify the cooktop is cool before lifting or removing it. Glass can crack if stressed while hot.

• Identify affected zone: Note which burner(s) stop working when F30 appears.
• Access underside: Remove the cooktop from the counter (if built-in) and remove the bottom cover to expose the burner assemblies and power board.
• Inspect sensor wiring: Each burner has a temperature sensor (thermistor) wired back to the control/power board. Check connectors for looseness or corrosion and reseat them.
• Test thermistor: With a multimeter, measure resistance of the suspect burner sensor at room temperature and compare to service specs. Replace the burner assembly or sensor if out of range.
• Check power module: If sensors and wiring are good, the power/induction module may be faulty and require replacement.

Because induction and high-voltage circuits are involved, consider professional service if you are not experienced with electronic repairs.