Ariston Dishwasher Error F12

⚡ Quick Answer: The Ariston dishwasher error F12 indicates a communication fault between the main control board and the user interface/display module. This error is o... ✅ DIY Fixable

What Does Error F12 Mean?

The Ariston dishwasher error F12 indicates a communication fault between the main control board and the user interface/display module. This error is often accompanied by the dishwasher stopping operation, displaying F12, and showing specific LED indicator patterns. Common causes include faulty or loose wiring connections and defective control components. To resolve this issue, users can try a basic reset by unplugging the dishwasher and checking for visible wiring issues.

Common Symptoms:

  • Dishwasher stops operation and shows F12 on display
  • Certain LED indicator sequences where lights 1 and 2 are off and lights 3 and 4 are on (model dependent)
  • Dishwasher doesn’t start or complete cycles

Possible Causes

  • Faulty or loose wiring/connectors between display/user interface board and main control board (medium)
  • Defective display/user interface module or main control board (medium)

How to Fix Error F12

DIY Fix Basic check and reset

  1. Turn off and unplug the dishwasher from power for a few minutes.
  2. Reconnect and restart to see if F12 clears.
  3. Inspect visible wiring at the control panel for obvious loose connections.

Technician Only Diagnostic and repair of control/display communication fault

  1. Remove lower kick panel to access control board and display module connections.
  2. Check continuity and secure connections between display/user interface and main control board.
  3. Test both boards for faults; replace defective board(s) as needed.
  4. Reassemble and validate repair with full cycle test.

Parts needed: Main control board (PCB), Display/user interface module, Wiring harness/connectors

🛑 When to Call a Pro:
  • If basic reset and visual wiring checks do not clear F12
  • If there is evidence of board damage (burn marks, corrosion)
  • If the user is not comfortable accessing internal electronics

Technical Specifications

wattage 30W
component Drain Pump
resistance 20-40 ohms
part_number C00112345
voltage_rating 230V AC

Common Questions

What does F12 error mean on ariston dishwasher?

The F12 error indicates a communication fault between the main control board and the user interface module.

Can I fix ariston dishwasher F12 error myself?

Yes, try resetting the dishwasher and inspecting the wiring for loose connections.

How much does it cost to fix F12 error?

Repair costs can range from $120 to $400+, depending on parts and service rates.

When should I call a technician for F12?

Call a technician if the reset doesn't work, if you see board damage, or if you're uncomfortable with internal repairs.

Sources & References

Data last verified: 2026-04-14

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