HI
Russell Hobbs High Ambient Temperature Protection

Dehumidifier displays HI and may stop or limit operation

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Possible Causes

Room temperature above maximum operating range, Unit placed near heat source (radiator, heater, direct sun), Faulty ambient temperature sensor reading too high

How to Fix / Troubleshooting

Safety: Avoid operating the unit in very hot environments.

Steps:

  • Measure room temperature: Confirm the ambient temperature. Most units are rated up to around 32–35°C.
  • Relocate the unit: Move the dehumidifier away from radiators, ovens, or direct sunlight.
  • Ventilation: Ensure there is at least 30 cm clearance around the unit for airflow.
  • Sensor test: If HI appears in a normal‑temperature room, test and replace the ambient NTC temperature sensor as needed.
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Repair Difficulty

Easy 2/5

Required Part

Ambient NTC Temperature Sensor
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