HI
Gree High Ambient Temperature or High Humidity Indication

Display shows HI and humidity cannot be adjusted; unit may run continuously.

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Possible Causes

Room temperature above rated range, Humidity sensor saturated or misreading, Blocked air inlet causing localized high humidity, Control board misinterpretation of sensor data

How to Fix / Troubleshooting

Safety: Ensure adequate ventilation around the unit.

Steps:

  • Room conditions: Confirm the room temperature is within the specified range. Extremely hot rooms can trigger HI.
  • Airflow: Make sure the air inlet and outlet are not blocked. Clean the air filter.
  • Sensor cleaning: Clean the humidity sensor area with dry air to remove dust and moisture.
  • Sensor replacement: If HI displays constantly regardless of actual humidity, replace the humidity sensor module.
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Repair Difficulty

Easy 2/5

Required Part

Humidity Sensor Module
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