Bionaire Bucket Full Switch Malfunction

Dehumidifier bucket full light stays on even when bucket is empty and properly installed

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Possible Causes

Stuck bucket float, Misaligned bucket not engaging switch lever, Failed micro-switch or reed switch, Broken bucket level float arm

How to Fix / Troubleshooting

Safety: Unplug the unit before inspecting the bucket switch.

Steps:

  • Remove and reinstall bucket: Slide the bucket out and back in firmly, ensuring it is fully seated and level.
  • Inspect float: Look inside the bucket compartment for a float mechanism or lever. Ensure it moves freely and is not jammed by dirt or scale.
  • Test switch: Access the bucket full switch (usually a small micro-switch or reed switch near the bucket opening). Manually actuate the lever or magnet and listen for a click. Test continuity with a multimeter; replace if it does not change state.
  • Adjust alignment: Slightly bend the switch bracket (if metal) or adjust the float arm so that the bucket properly engages the switch when installed.
  • Replace assembly: If the float or switch is broken, replace the bucket full switch assembly with the correct Bionaire part.
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Repair Difficulty

Easy 2/5

Required Part

Bucket Full Switch Assembly
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