E12
Blomberg
Communication / UI Control Fault
Washer-dryer shows E12; communication error between main control board and user interface panel
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 wiring harness between display board and main PCB, Faulty user interface (control panel) board, Defective main control board, Moisture ingress into control panel
How to Fix / Troubleshooting
Safety first: Unplug the appliance before removing any control panels.
- Power reset: Leave the machine unplugged for at least 5 minutes to discharge internal electronics, then reconnect and test. Sometimes transient faults clear with a reset.
- Inspect control connections: Remove the top cover and, if necessary, the front control panel. Check the ribbon cable and harness connectors between the user interface and main PCB. Reseat all connectors firmly.
- Check for moisture: Look for signs of condensation or detergent residue on the control boards. If moisture is present, allow the boards to dry completely before retesting. Address any leaks from the dispenser or door seal.
- Board replacement: If E12 persists, either the UI board or main PCB may be defective. Replacement typically requires programming with the correct Blomberg configuration and is best handled by an authorized technician.
Advertisements
Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board (PCB)
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements