Error 5
Tassimo Internal Electronics Fault / Self-Test Failure

Machine powers on but immediately shows red error light; no response to buttons, no pump noise.

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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

Faulty control board, Shorted internal sensor (temperature sensor, flow meter), Previous liquid ingress causing corrosion on PCB, Power supply board failure

How to Fix / Troubleshooting

Safety first: Unplug the machine immediately. Do not attempt to operate if there is any sign of burning smell or visible damage.

  • Check for moisture: Inspect around the base and rear of the machine for signs of leaks or spills that may have entered the housing. Do not open the case while plugged in.
  • Power cycle: Leave the machine unplugged for at least 15 minutes, then plug into a different outlet (without extension cords) and test again.
  • External inspection only: If the error persists and the machine remains unresponsive, the fault is likely internal to the electronics.
  • Do not open the housing unless qualified: Internal components carry mains voltage. Contact an authorized Tassimo service center for PCB and sensor diagnostics.
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Repair Difficulty

Professional Required 5/5

Required Part

Control Board (PCB)
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