Grundig Intermittent Power or Control Board Fault

Washer stops mid-cycle and door remains locked with water inside, but no error code is shown.

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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

Loose mains plug or internal connector, Overheating main PCB, Faulty door lock not sending unlock signal, Software hang in control board

How to Fix / Troubleshooting

Safety first: Unplug the washer before attempting to open panels. Drain water manually to avoid spills.

Step-by-step checks:

  • Manual drain: Use the pump filter drain hose or slowly open the filter to drain water into a tray.
  • Manual door release: Use the emergency release (usually near the pump filter) to open the door.
  • Check power and connectors: Inspect the mains plug, cord, and internal connectors on the main PCB for looseness or heat damage. Reseat connectors.
  • Observe for overheating: If the machine stops after running for some time, the PCB may be overheating. Ensure ventilation is not blocked and consider PCB replacement if the issue recurs.
  • Door lock test: Replace the door lock if it intermittently fails to unlock at end of cycle.
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Repair Difficulty

Medium 3/5

Required Part

Main Control Board (PCB)
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