F12Serious
Speed Queen Dishwasher F12 Error Code
Internal control board fault detected.
Common causes
- Power surge
- Component failure
- Moisture damage
How to fix it
- Unplug dishwasher for 5 minutes and plug back in.
- Check for signs of burns or damage on control board.
- Ensure unit is on a dedicated circuit.
⚠ When to call a pro: Only a technician should replace the control board.
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Always unplug the appliance (and turn off the water for washers/dishwashers) before inspecting. These guides are for information only and are not a substitute for a professional repair.