Ariston Oven Error Code ER75

ER75 indicates a fault on the Key2 input of the oven's touch control system. The control board is detecting an abnormal or continuous signal from that specific touch button position. This can be caused by moisture, a misaligned rubber contact piece, or a failed display board. It is a touch panel hardware or environmental fault, not a heating or safety system failure.

ER75 is a touch control fault rather than a fault with the heating elements or gas system, so it does not directly indicate a fire or burn hazard. However, a malfunctioning touch panel can result in unintended inputs or an inability to control the oven correctly, which is a practical safety concern. It is advisable to resolve the fault before continuing regular use of the appliance.

If the fix only requires drying out the panel or repositioning a rubber contact piece, the repair can cost little to nothing beyond your time. If the display board requires replacement, parts alone typically range from $80 to $200 depending on the specific model, with professional labor adding $100 to $250 on top of that. Getting a quote from a qualified technician before ordering parts is recommended to confirm the correct component and avoid unnecessary expense.

Start by opening the oven door and letting the unit sit for a period of time to allow any condensation to evaporate from the touch panel. If the code clears, the oven should return to normal operation. If ER75 persists, inspect the inductive rubber contact pieces beneath the display board to confirm all are present and correctly positioned. If the rubber pieces are intact and the fault continues, replacing the display board is the recommended repair.

A power reset by switching the oven off at the circuit breaker for several minutes may temporarily clear the code, particularly if the root cause is moisture that has already begun to evaporate. However, if the underlying cause is a failed display board or a missing rubber contact piece, the fault will return after reset. A reset alone is not a repair and should be treated as a diagnostic step rather than a solution.