Hotpoint Cooktop Error Code F06

F06 indicates a fault with the NTC temperature sensor on the small induction hotplate, connected through the ISI UART 1 circuit at connector CN 03. The code has three subcodes: a shorted NTC, an open-circuit NTC, or the small hotplate not being detected as connected. The cooktop disables the affected zone until the fault is corrected.

The cooktop disables the affected small hotplate zone when F06 is active, so you cannot use that zone. Other zones may continue to function, but it is advisable to have the fault diagnosed and repaired promptly. Operating with an unresolved sensor fault means the cooktop cannot properly monitor temperature on that inductor.

Repair costs depend on the root cause. Cleaning or reseating a connector involves no parts cost and minimal labor. Replacing an NTC thermistor is generally a lower-cost repair, while replacing the full inductor assembly or the control board can range from moderately expensive to a significant portion of the appliance's value. Expect diagnostic fees of roughly $50 to $100 before parts and labor are added.

If the cause is simply a loose or dirty connector at CN 03, a careful DIYer comfortable working inside appliances can reseat and clean the connector after disconnecting power. However, diagnosing a failed NTC thermistor requires a multimeter and some familiarity with reading resistance values. Replacing the inductor assembly or control board is generally a job for a qualified technician.

A power reset by disconnecting the cooktop from the mains for a few minutes may temporarily clear the error, but if the underlying fault remains, F06 will return once the unit is powered and the affected zone is used again. A permanent fix requires addressing the root cause, whether that is a connector, wiring, or faulty NTC thermistor.