Error F12 in Ariston washing machines – how to fix

CM Ariston (Hotpoint Ariston) shows error F12 on the display before water intake. The fault code appears at different stages of washing, but if the breakdown is not eliminated, the error will be displayed on the display immediately after the machine is turned on.

On models with electromechanical control, the code will be displayed on the indicators, which means a serious problem.

Code recognition

Washing machines without a display give an F 12 error like this:

What does code F12 mean, what should I do if a malfunction occurs? There is no contact between the display system and the control unit. You can try to solve this problem at home.

Read on for how to fix the problem.

Troubleshooting at home

How to fix the problem in the Ariston washer and remove the F12 error:

  • Resetting the code will help completely disconnect the machine from the network. There may have been a system failure. If so, when turned on, the washer will work normally.
  • View the contacts leading from the indicator to the electronic controller. If the wires have come loose, reinstall them.

What to do if nothing helped? Try to determine the cause of the failure.

Control module

It is believed that 80% of the problems with the F12 error occur on the board. Then the machine immediately issues a code without starting the wash.

What you can do:

  1. If the firmware of the board fails, it is necessary to “reflash” it.
  2. In case of problems with the elements of the board (diodes, triacs), you need to replace it.
  3. If the tracks on the microcircuit are burned out, you will have to clean the elements, solder the contacts.
  4. A microprocessor failure requires the entire control module to be replaced.

Display module

The reasons are similar to control board malfunctions, the solutions are the same.

Connecting circuit damage

The wires connecting the control and indication unit could burn out due to power surges, they could be damaged by rodents. Defective contacts can be stripped and soldered, and the wires can be changed to new ones.

Each element is checked by a tester before repair.

If the repair at home did not return the machine to working capacity, contact the service center.

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