Venta dehumidifier shows F5 and does not collect water

Safety: Unplug the unit. Work on compressor circuits only if you are trained; mains voltage is present.

• Listen for compressor: When the unit calls for dehumidification, listen for a low humming sound from the compressor. If you hear repeated clicking or buzzing without starting, there may be a start component issue.
• Check ventilation: Ensure the unit has adequate space around it and is not overheating.
• Inspect start components: With power disconnected, access the compressor terminal cover. Check the PTC start relay and overload protector for signs of burning or cracking. Replace if damaged.
• Measure compressor windings: Using a multimeter, check resistance between compressor terminals according to service data. If windings are open or shorted, the compressor is defective.
• Control board: If the compressor never receives power, the compressor relay on the main control PCB may have failed and require replacement.
• Sealed system: Compressor replacement and refrigerant handling must be done by a certified refrigeration technician.