Ariston Dishwasher Error Code AL 09

AL 09 indicates a software setup or recognition error. The control board cannot identify the software type stored in the EEPROM, or it has detected that an unrecognized or incompatible keypad is connected. The dishwasher will not operate normally until the mismatch or data issue is resolved.

A power reset may temporarily clear the error display, but AL 09 will return if the underlying cause is not addressed. If the EEPROM data is corrupted or the wrong keypad is connected, the fault will reappear each time the dishwasher powers on. A reset alone is not a fix for this code.

Repair costs depend on the root cause. If only a connector needs reseating, the cost is primarily labor, typically in the range of $75 to $150 for a service call. If the control board requires reprogramming or replacement, or if a new keypad interface card is needed, total costs including parts and labor can range from $150 to $400 or more depending on parts availability and local labor rates.

Some causes, such as a loose ribbon cable or interface card connector, can be checked by a confident DIYer comfortable working with electronics. However, issues involving EEPROM reprogramming or control board replacement require technical expertise. If a recent part replacement triggered the error, start by confirming the replacement part is the correct one for your exact model.

No. AL 09 prevents the control board from operating correctly, and the dishwasher should not be run while this error is active. Attempting to force operation could result in incomplete cycles or potential damage to other components. Resolve the fault before resuming use.