Ariston Oven Error Code ER86

ER86 indicates a Key13 fault on the Ariston oven's touch control panel. The control board has detected that Key13 is not functioning correctly, either due to moisture, a missing inductive rubber component, or a hardware failure on the display board. It does not indicate a heating or electrical safety fault. The first step is to open the oven door and allow any condensation to dry before investigating further.

ER86 relates to the touch control interface rather than the heating system or any safety-critical component, but the oven may not respond correctly to input while the fault is active. Attempting to operate the oven in this state is not recommended, as you may not be able to control or cancel cooking functions reliably. Allow the panel to dry and the fault to clear before using the oven again.

If the fault is caused by condensation or a displaced rubber component, repair costs can be minimal, primarily covering a service call fee in the range of $50 to $120 if a technician is involved. If the display board requires replacement, part costs typically range from $80 to $250 depending on the model, with additional labor charges on top. Getting a diagnosis before ordering parts is advisable to avoid unnecessary expense.

In many cases, yes. Condensation is the most common cause, and simply opening the oven door and waiting for the moisture to evaporate can clear the fault. You should also visually inspect the touch panel for any obvious contamination or residue and clean the surface carefully. If the error returns after drying and cleaning, a physical inspection of the inductive rubber pieces behind the touch keys is the next step before committing to a part replacement.

A power reset, such as switching the oven off at the circuit breaker for a few minutes, may temporarily clear the code if moisture was the underlying cause. However, if the inductive rubber component is missing or the display board has failed, the error will return as soon as the oven is powered back on. A reset should be considered a diagnostic step rather than a permanent solution.