E5
Mr. Coffee Low Voltage / Power Supply Fault

Display shows “E5”; unit may not power on fully or may shut off randomly.

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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

Failed internal power supply on control PCB, Loose AC cord connection at strain relief, Damaged line filter or MOV, Burned component on low-voltage regulator circuit

How to Fix / Troubleshooting

Safety first: Unplug the coffee maker before inspection.

  • Check outlet and cord:
    • Test the outlet with another appliance.
    • Inspect the power cord for cuts, kinks, or burn marks.
  • Reset:
    • Unplug for 10 minutes, then plug back in and test.

If E5 remains and other appliances work on the same outlet, the internal power supply on the control board is likely defective. This requires board-level replacement by a technician.

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Repair Difficulty

Professional Required 5/5

Required Part

Control PCB Power Supply Section
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