Error 12
Tassimo
Firmware / Control Board Lockup
Red error light and all LEDs flash; machine becomes unresponsive after a power surge or outage.
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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.
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Possible Causes
Power surge damaging control board, Corrupted firmware state, Internal voltage regulator fault, Shorted component on PCB
How to Fix / Troubleshooting
Safety first: Disconnect the machine from power immediately after any suspected surge.
- Hard reset: Unplug the machine for at least 15 minutes to allow internal capacitors to discharge, then plug into a known-good outlet without an extension cord.
- Check for burning smell: If you detect any burnt odor or see discoloration through vents, do not use the machine.
- Test basic functions: After reset, try powering on and running a rinse cycle.
- If lights continue flashing: The control board is likely damaged. Do not attempt to open or repair the PCB yourself; contact an authorized service center for board replacement.
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Repair Difficulty
Professional Required
5/5
Required Part
Control Board (PCB)
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