V-ZUG Drain System Odor / Bacterial Growth

Washer emits a sewage or rotten egg smell from the drum

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Possible Causes

Standing water in sump or drain hose, Dirty drain pump filter, Build-up of detergent and organic matter in tub and hoses, Poorly vented household drain

How to Fix / Troubleshooting

Safety first: Wear gloves when cleaning the drain system.

  • 1. Clean pump filter: Open the service flap, drain residual water, and thoroughly clean the drain pump filter.
  • 2. Flush drain hose: Detach the drain hose from the standpipe or siphon and flush with hot water to remove sludge.
  • 3. Maintenance wash: Run a 90°C maintenance cycle with machine cleaner to sanitize the tub and hoses.
  • 4. Check household drain: Ensure the standpipe or siphon is not blocked and is properly vented to prevent sewer gas backflow.
  • 5. Regular cleaning: Periodically clean the detergent drawer and run hot cycles to prevent recurrence.
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Repair Difficulty

Easy 2/5

Required Part

Drain Pump Filter
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