Hotpoint Cooktop Error Code F15

F15 indicates that the ISI UART 1 channel, operating through the CN 04 connector, has detected an excessively high temperature on the small induction coil. The cooktop monitors coil temperature using an NTC thermistor, and this code is triggered when that reading exceeds safe limits. The fault may reflect either a genuine overheating condition or a miscalibrated sensor. The cooktop will not operate normally until the underlying cause is resolved.

No. The F15 code signals a potential overheating condition on the induction coil, and continuing to use the cooktop before diagnosing the fault could risk damage to the coil windings or other internal components. Stop using the appliance and allow it to cool completely before attempting any inspection.

Repair costs vary depending on the faulty component. Replacing an NTC thermistor is generally the least expensive fix, typically in the range of $20 to $80 for the part. If the control board requires replacement, costs can range from $150 to $350 or more depending on the specific board and labor rates in your area. Getting a diagnostic assessment first will help determine the most cost-effective path forward.

Some steps, like clearing ventilation blockages around the cooktop or reseating the CN 04 connector, can be done without specialized tools. However, testing and replacing the NTC thermistor or diagnosing the control board requires a multimeter and familiarity with induction cooktop components. If you are not comfortable working with appliance electronics, a qualified technician is the safer choice.

A reset may temporarily clear the fault display, but if the underlying problem persists, whether a miscalibrated NTC, a failed thermistor, or a cooling issue, the F15 code will return during operation. Resetting without repairing the root cause does not resolve the fault and may mask a real overheating risk.