Midea Short Cycling / Control Instability

Dehumidifier turns on and off rapidly (short cycling) without reaching set humidity.

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.

Possible Causes

Humidity sensor located too close to cold discharge air, Oversized unit for small space, Faulty main control board hysteresis, Intermittent power supply

How to Fix / Troubleshooting

Safety: Unplug before moving sensors or opening panels.

Relocate unit: Place the dehumidifier more centrally in the room, away from corners and direct drafts.
Check sensor placement: Ensure the humidity sensor is in the intake air stream, not directly in the cold discharge path. Reposition if necessary.
Stabilize power: Avoid shared circuits with heavy appliances that cause voltage dips.
Board replacement: If cycling remains erratic, the control algorithm or relay on the main PCB may be faulty. Replace the board.

Repair Difficulty

Medium 3/5

Required Part

Humidity Sensor Module

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