Ariston Oven Error Code ER84

ER84 indicates a fault at the Key11 position on the Ariston oven's touch control panel. The controller has detected an abnormal or continuous signal from that specific touch button input. This is often caused by condensation on the panel surface or a problem with the inductive rubber components beneath it. If drying the panel does not resolve the fault, the display board will need to be replaced.

The ER84 code indicates a control panel input fault, which may limit your ability to operate the oven normally or safely select cooking functions. It is advisable not to rely on the oven for cooking until the fault is diagnosed and resolved, as a malfunctioning control board can cause unpredictable behavior.

If the fault is caused only by condensation, there is no parts cost at all. If an inductive rubber component needs to be replaced, costs are typically low. If the display board requires replacement, parts and labor combined can range from roughly $150 to $350 or more depending on the specific model and local labor rates.

Yes, in many cases. Open the oven door and let the touch panel surface dry out completely, as steam and condensation are the most frequent cause of ER84. If the fault clears after the panel dries, no parts are needed. If it persists, you will need to inspect the inductive rubber pieces inside the panel or replace the display board, which are more involved repairs.

A power reset by switching off the oven at the breaker or unplugging it for a few minutes may temporarily clear the display, but if the underlying cause such as moisture or a faulty board is still present, the ER84 code will return. A true resolution requires addressing the root cause, whether that is drying the panel, reseating the inductive rubber pieces, or replacing the display board.