Ariston Cooktop Error Code E.23

E.23 indicates that the keyboard temperature sensor has been detected in an open circuit condition. This sensor monitors the temperature of the touch control panel area and protects the electronics from overheating. When the control board receives no signal from this sensor, it triggers E.23 and may disable the cooktop to prevent potential damage.

It is not advisable to continue using the cooktop while E.23 is active. The keyboard temperature sensor is a safety component that protects the control panel electronics from overheating. Without a functioning sensor, the cooktop cannot monitor or respond to rising temperatures at the keypad, which could lead to component damage or create a hazardous condition.

Repair costs vary depending on the root cause. If only a connector needs to be reseated, there may be no parts cost, though a technician's diagnostic fee typically ranges from $50 to $100. Replacing the keyboard temperature sensor itself generally costs between $20 and $80 for the part, plus labor. If the control board requires replacement, total costs including parts and labor can range from $150 to $400 or more depending on the model.

A knowledgeable DIYer can inspect the wiring harness and connectors for obvious disconnections or corrosion, and may be able to reseat loose connectors without replacing any parts. However, testing the thermistor with a multimeter and replacing internal components requires disassembling the cooktop, which carries electrical safety risks. If you are not comfortable working with appliance electronics, a qualified technician is recommended.

A power reset, such as switching off the cooktop at the circuit breaker for several minutes and restoring power, may temporarily clear the error display. However, if the underlying cause is a failed sensor, broken wire, or faulty connector, the E.23 code will return once the control board attempts to read the sensor again. A reset does not repair the open circuit condition.