Dehumidifier shows E5 and stops; may attempt to start then shut down quickly.

Safety: Unplug the unit. High voltage is present at the compressor terminals when running.

Steps:

• Basic reset: Allow the unit to cool for 30–60 minutes unplugged, then try again. If E5 returns immediately, continue.
• Access compressor compartment: Remove rear or side panels to expose the compressor and its wiring cover.
• Inspect wiring: Look for burnt connectors, melted insulation, or loose spade terminals at the compressor and main PCB.
• Check start device: Many Sharp dehumidifiers use a PTC start relay or combined start device on the compressor. Remove it and inspect for burn marks or rattling pieces inside.
• Test compressor windings: With a multimeter, measure resistance between the three compressor pins (C, S, R). None should be open or shorted to the compressor shell. If any winding is open or shorted to ground, the compressor is bad.
• Replace start device/capacitor: If the compressor windings test OK, replace the compressor start relay/PTC and any external run capacitor with Sharp-specified parts.
• Control board: If the compressor and start components are good but E5 persists, the main control PCB relay or current-sensing circuit may be faulty and require replacement.

Note: Replacing a failed compressor or opening the sealed system must be done by a licensed refrigeration technician.