Dehumidifier powers on but compressor never starts; only fan runs continuously.

Safety: Unplug before accessing compressor compartment.

• Check temperature and settings: Ensure room temperature is within operating range and humidity setpoint is below current humidity.
• Listen for clicks: When the unit calls for dehumidification, you should hear a relay click and a slight hum from the compressor. No sound may indicate a control issue.
• Inspect start device: Remove the compressor cover and examine the start relay/PTC. Replace if cracked, burnt, or rattling.
• Test compressor windings (advanced): Measure resistance between compressor terminals. Infinite or very low readings indicate a failed compressor, requiring professional replacement.