Ariston Oven Error Code ER10

ER10 on an Ariston oven indicates a temperature gradient fault. The oven's control board activated the heating elements but the PTC temperature sensor did not detect any rise in oven cavity temperature. The oven shuts down as a safety measure until the underlying cause is diagnosed and repaired.

No, you should not continue using the oven while ER10 is active. The error means the oven either is not heating or cannot confirm it is heating correctly, so food will not cook properly. More importantly, the control board has halted operation precisely because it cannot verify safe thermal conditions inside the cavity. Use the oven only after the fault has been properly diagnosed and corrected.

Repair costs vary depending on which component has failed. A replacement PTC sensor typically costs in the range of $20 to $60 for the part. If a heating element has failed, parts generally run from $30 to $100. If the control board is at fault, that is the most expensive scenario, with board costs ranging from $100 to $250 or more. Adding professional labor will increase the total, so getting a diagnostic quote from a qualified technician first is advisable.

A knowledgeable DIYer can perform the first diagnostic step, which is checking the resistance of the PTC sensor at room temperature. A correctly functioning sensor should read around 545 ohms. If the resistance is off, replacing the PTC is a manageable repair. However, if the fault traces back to the wiring harness, heating elements, or control board, those repairs may require more advanced skills and proper safety precautions when working with high-voltage components.

A power reset by switching off the oven at the breaker or unplugging it may temporarily clear the error display, but ER10 will return as soon as the oven attempts to heat again if the underlying fault has not been fixed. The error is not a random glitch. It requires an actual repair to the PTC sensor, wiring, or heating circuit before it will stay cleared.