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Dehumidifier fan runs but the compressor never starts

Many 'compressor off' calls are designed pauses: restart delay after power-up, setpoint reached, or defrost (fan on, compressor off). If none apply, look for a fault code, a power problem or an overload trip from heat or poor airflow. Compressor and refrigerant faults are blocked.

Cross-checked ~40 min moderateBrands: All

Before you start

  • Unplug before opening the cabinet.
  • Live-voltage and amp checks are caution: insulated tools, one hand.
  • Do not open or recharge the refrigerant circuit (EPA 608).

Diagnostic steps

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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Dehumidifier fan runs but the compressor never starts · OnCall Tech