P2
Keystone Bucket Full / Water Tank Full Protection

Dehumidifier displays P2 and stops running; the bucket is full or nearly full.

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Possible Causes

Water collection bucket full, bucket not seated correctly, a stuck or failed bucket full float switch, an obstructed drain hose (if continuous drain is used), or faulty bucket switch wiring.

How to Fix / Troubleshooting

Safety: Turn the unit off and unplug before removing the bucket.

Steps to clear P2:

  • Empty the bucket: Carefully slide out the water bucket, empty it, and reinstall it fully until it clicks into place.
  • Check bucket position: Ensure the bucket is not warped and that it sits flat against the internal switch lever or float mechanism.
  • Inspect float and switch: Inside the bucket compartment, locate the bucket full float and the bucket full switch. Make sure the float moves freely and is not stuck by dirt or scale.
  • Continuous drain users: If using a hose, confirm the hose is not kinked or clogged and that it slopes downward to a drain. A blocked hose can cause the bucket to fill and trigger P2.
  • Switch test (advanced): With the unit unplugged, access the bucket full switch and check continuity with a multimeter while actuating the lever. Replace the bucket full switch if it does not change state.
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Repair Difficulty

Easy 2/5

Required Part

Bucket Full Float Switch
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