P1
Rowenta Internal Tank / Sump Full Protection (Pump or Internal Reservoir)

Dehumidifier displays P1 and stops, water bucket is empty or nearly empty.

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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

Blocked internal drain channel, clogged hose connection, failed internal float switch, kinked drain hose (on pump models)

How to Fix / Troubleshooting

Safety: Unplug the unit before handling water connections.

  • Check external bucket: Empty and reinstall the bucket to ensure proper seating.
  • Inspect drain hose: If using continuous drain or pump, ensure the hose is not kinked, elevated too high, or blocked. Flush the hose with water.
  • Clean drain outlet: Remove the hose and clean the drain spout on the dehumidifier with a small brush to remove slime or debris.
  • Internal float: Some models have an internal float in a small sump. If accessible, clean this area and ensure the float moves freely.
  • If P1 remains: The internal float switch or pump assembly may be faulty and require replacement.
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Repair Difficulty

Medium 3/5

Required Part

Internal Float Switch
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