F12
Indesit Communication Error Between Display Board and Main PCB

No communication between user interface and main control; display may be blank or unresponsive, with F12 logged in diagnostics.

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 harness between UI and main board, Oxidized connectors at control board, Failed user interface board, Failed main control board

How to Fix / Troubleshooting

Safety: Isolate from mains before removing the door panel.

Check harness and connectors:

  • Remove the inner door panel to access both the user interface (top of door) and main control board (side of door on some models).
  • Unplug the ribbon cable or harness between them, inspect for corrosion or bent pins, then reconnect firmly.
  • Check the harness for pinched or broken wires where the door opens and closes.

Board substitution:

  • If wiring is intact, the fault is usually with either the UI board or the main PCB.
  • On many Indesit dishwashers, the main PCB fails more often than the UI, but diagnosis may require substitution with a known good board.

Because this involves low‑voltage communication circuits and multiple boards, if you are not experienced, consider professional service.

Advertisements

Repair Difficulty

Professional Required 5/5

Required Part

User Interface Board or Main Control Board
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements