Siemens Condensation and Steam Management Issue

Microwave interior fills with excessive condensation or water drips from the door or vents.

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Possible Causes

Blocked ventilation, cooking high-moisture foods without adequate venting, failed cavity fan, poor installation in cabinet

How to Fix / Troubleshooting

Safety warning: Moisture can affect electrical components. If you see water entering control areas, disconnect power.

Steps to try:

  • 1. Use correct cookware: Cover high-moisture foods with a microwave-safe lid or wrap, leaving a small vent.
  • 2. Ventilate after cooking: Open the door for several minutes after cooking to allow steam to escape.
  • 3. Check vents: Ensure external vents are not blocked by cabinets, panels, or objects.
  • 4. Clean cavity: Wipe away condensation and keep the cavity dry when not in use.
  • 5. Technician-level: If condensation is extreme and persistent, check the cavity fan operation and installation clearances.

Some condensation is normal, but pooling water or dripping from the control panel area should be investigated.

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Repair Difficulty

Easy 2/5

Required Part

Cavity Fan (if not operating correctly)
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