H2
Whynter
Humidity Sensor Disconnected or Shorted
Dehumidifier shows H2 and will not respond to humidity setpoint changes
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Humidity sensor cable unplugged, Sensor wires pinched or broken, Sensor shorted by moisture ingress, Control board input failure
How to Fix / Troubleshooting
Safety first: Unplug the dehumidifier before opening any covers.
Steps to resolve H2:
- Access sensor wiring: Remove the control panel or front grille to locate the humidity sensor and its wiring harness.
- Check connector: Ensure the sensor plug is fully seated on the main control board. Disconnect and reconnect to clean the contacts.
- Inspect cable: Look for crushed, cut, or frayed wires, especially where the harness passes through plastic panels.
- Dry the area: If there are signs of condensation or water near the sensor, dry the area thoroughly and improve drainage or placement to prevent future moisture.
If H2 remains after these checks, the sensor or control board will likely need replacement.
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Repair Difficulty
Hard
4/5
Required Part
Humidity Sensor
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