How to Fix / Troubleshooting

Steps:

Measure room temperature: Confirm the room is within the specified operating range (often up to 95°F / 35°C). If hotter, improve ventilation or move the unit.
Relocate: Keep the dehumidifier away from ovens, radiators, and direct sunlight.
Clean filter and vents: Overheating can be worsened by restricted airflow. Clean the filter and ensure vents are clear.
Sensor check: If the room is not excessively hot but HI persists, inspect and test the ambient temperature sensor. Replace if out of spec.

Note: Prolonged operation in very high temperatures can shorten compressor life.

Dehumidifier displays HI and may shut down

Possible Causes