F12
Indesit Communication error between main PCB and display/UI board

No communication between display panel and main board; lights may flash; F12 shown on some models.

Advertisements

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Advertisements

Possible Causes

Loose or damaged communication harness, Faulty display board, Faulty main control board, Moisture or corrosion on connectors

How to Fix / Troubleshooting

Safety: Disconnect mains power before opening the top or control panel.

F12 indicates the main board and display are not exchanging data correctly.

  • Inspect harness: Remove the top cover and access the wiring between the main PCB and the display/UI board. Reseat all connectors and check for pin damage or corrosion.
  • Check for moisture: Look for signs of water ingress around the control panel and cable entry points. Dry thoroughly and address any leaks from the dispenser or door seal.
  • Visual board check: Examine both boards for burnt components or cracked solder joints at the communication connectors.

If reseating and cleaning do not restore communication, either the UI board or main PCB (or both) may need replacement. This is typically a level of repair for a professional technician.

Advertisements

Repair Difficulty

Professional Required 5/5

Required Part

Display / UI Board
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements