Ariston Oven Error Code ER22

ER22 means the NTC temperature sensor located on the display board is producing an incorrect reading. This sensor monitors the temperature around the control electronics rather than the oven cavity. The error is triggered when the sensor reading falls outside acceptable limits, which can happen due to thermal insulation problems, a faulty sensor, or wiring issues.

It is generally not advisable to continue using the oven while ER22 is active. The error indicates the control electronics may be exposed to excessive heat or that temperature monitoring is compromised. Continuing to operate the oven in this condition could risk further damage to the display board or associated components.

Repair costs vary depending on which component is at fault. Replacing a gasket or insulation panel is typically the least expensive fix, often in the range of $20 to $80 for parts. An NTC sensor replacement is generally $30 to $100 in parts. If the display board itself needs replacement, parts and labor combined can range from $150 to $400 or more depending on the model and technician rates in your area.

Start by checking the gasket and insulation fitted behind the control panel, as a displaced or missing gasket is the most common cause. Ensure both components are present, correctly positioned, and in good condition. If the thermal sealing is intact, the next steps are to test the NTC sensor resistance and inspect all wiring connections at the display board. Replacing damaged insulation, the NTC sensor, or the board itself may be necessary depending on findings.

A power reset may temporarily clear ER22, but the code will return if the underlying cause has not been addressed. If the gasket or insulation is out of place, or if the NTC sensor is faulty, the fault condition persists and the code will reappear during or after the next use. A reset alone is not a repair.