Whynter Humidity Control Failure / Undersized Capacity

Dehumidifier runs continuously and never reaches the set humidity

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Possible Causes

Humidity sensor out of calibration, Room size or moisture load exceeds unit capacity, Air leaks into room from outside, Setpoint too low for conditions

How to Fix / Troubleshooting

Safety first: Normal operation may include long run times in very humid conditions; ensure adequate ventilation.

Steps to improve control:

  • Verify humidity: Use an external hygrometer to compare actual humidity with the unit's display.
  • Adjust setpoint: Set the target humidity to around 45–50% instead of very low values like 30%.
  • Seal the space: Close windows and doors and reduce sources of moisture.
  • Check sensor: If the display reading is clearly wrong, the humidity sensor may need cleaning or replacement.
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Repair Difficulty

Easy 2/5

Required Part

Humidity Sensor
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