E15
Grundig Power Supply / Low Voltage Fault

Display shows E15 and the unit may shut down unexpectedly or fail to start after a power interruption.

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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

Defective internal power supply on main PCB, Loose mains connection, Damaged power cord, Brownouts or unstable household voltage

How to Fix / Troubleshooting

Safety: Always unplug the wine cooler before inspecting the power system. Do not bypass safety earth connections.

  • Check outlet and cord: Test the outlet with another appliance. Inspect the Grundig power cord for cuts, burns, or kinks.
  • Inspect terminal block: If accessible, verify that the mains wires are tight at the internal terminal block and show no signs of overheating.
  • Measure input voltage: Use a multimeter to confirm correct voltage at the outlet. If voltage is low or unstable, consult an electrician.
  • Inspect main PCB power section: Look for burnt components, bulging capacitors, or discoloration near the power supply area.
  • Replace main PCB or power module: If the external supply is good but E15 persists, replace the Grundig main control board / power module.
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Repair Difficulty

Hard 4/5

Required Part

Main Control Board / Power Module
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