Ariston Oven Error Code ER73

ER73 indicates a Key0 fault on the oven's touch control system, meaning the control board is detecting a malfunction on the first touch button input. This is commonly caused by moisture in the control panel or a problem with the inductive rubber components behind the panel. It can also point to an internal failure of the display board itself if other causes have been ruled out.

It is not recommended to continue using the oven while ER73 is active. A malfunctioning touch input could lead to unintended oven behavior, such as an unresponsive or erratic control panel. Resolve the fault before resuming normal use to ensure safe and predictable operation.

If the issue is only moisture, there is no parts cost involved. If inductive rubber pieces need to be sourced, the cost is typically minor. Replacing the display board is the most expensive repair scenario, with parts and labor costs generally ranging from around $150 to $350 or more depending on the specific model and local labor rates.

In many cases, yes. Start by opening the oven door and allowing the touch panel area to dry completely, as condensation is the most common cause of this fault. If the error clears after drying, no parts are needed. If it persists, inspect the inductive rubber pieces behind the touch panel before concluding that the display board needs replacement.

A power reset may temporarily clear the code, but if the underlying cause such as moisture or a damaged component is still present, the fault will return. Allow the oven to dry fully after a reset and monitor whether the code reappears. A persistent ER73 after resetting indicates a physical component issue that requires inspection or repair.