Dehumidifier shows E6 and will not start or shuts down shortly after starting

Safety: Unplug the unit. Capacitors and compressor terminals can be hazardous; if unsure, contact a professional.

Steps to troubleshoot E6:

• Verify power supply: Plug the dehumidifier directly into a properly grounded wall outlet (no extension cords). Use a different outlet if possible. Low voltage can cause overcurrent trips.
• Listen for compressor behavior: When powered, does the compressor hum briefly then click off? That often indicates a start relay or overload issue.
• Access the compressor compartment: Remove the rear or side panel to expose the compressor and its electrical cover. Note the wiring layout or take a photo.
• Inspect start components: Remove the plastic cover on the compressor terminals. Check the PTC start relay and overload protector for signs of burning, cracking, or melting.
• Test the start relay and overload (if equipped and if you have a meter): Check continuity according to Whirlpool specifications. A relay that rattles when shaken or reads open when it should be closed is suspect.
• Replace faulty start relay/overload: Install Whirlpool-compatible compressor start components, matching the original wiring configuration.
• If compressor is locked or drawing excessive current: This is a sealed system issue. Do not attempt to open the refrigerant system yourself. A technician will need to evaluate compressor health and possibly replace it.
• Control board check: If the compressor and start components test good but E6 persists, the main control board's current-sensing circuit may be faulty and require replacement.

Test: Reassemble panels, restore power, and run the unit. Confirm that the compressor starts smoothly and E6 does not reappear.