How to Fix / Troubleshooting

Safety: Unplug before opening the control panel if inspection is needed.

Steps:

1. Adjust settings: Set the target humidity at least 5–10% lower than current room humidity to reduce cycling.
2. Improve placement: Move the unit away from walls and corners to ensure good air mixing. Avoid placing it near other heat or moisture sources.
3. Check humidity sensor: Inspect and, if necessary, replace the humidity sensor module as described in E3 if readings appear inaccurate.
4. Control board: If short cycling persists with a known-good sensor, the main PCB may have a control logic fault and require replacement.

Note: Some cycling is normal as the unit maintains set humidity; focus on excessively rapid on/off behavior (every few minutes).

Dehumidifier short cycles, turning on and off frequently

Possible Causes