E29
Bosch Mains Voltage / Power Supply Fault

Washer-dryer shows E29 and does not fill correctly; often low voltage or power supply related

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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

Low or unstable mains voltage, Loose power cord connection, Faulty noise filter module, Internal power supply failure on PCB

How to Fix / Troubleshooting

Safety first: Unplug the appliance before inspecting electrical components.

  • 1. Check outlet: Test the wall socket with another high-load appliance to ensure stable power. Avoid using extension cords or multi-plug adapters.
  • 2. Inspect power cord: Examine the Bosch power cord for cuts, burns, or kinks. Replace if damaged.
  • 3. Noise filter module: Remove the top cover and locate the mains filter (EMI filter). Check for burn marks or bulging components. Replace if visibly damaged.
  • 4. Professional diagnosis: If supply and filter are good, the internal power supply on the main PCB may be failing. This should be tested and repaired by a qualified technician.
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Repair Difficulty

Hard 4/5

Required Part

Mains Interference Filter
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