Dehumidifier displays E5 and the compressor will not start.

Safety: Unplug the unit. Capacitors in the power circuit may hold a charge; avoid touching the PCB power section unless it is discharged and you are qualified.

Steps:

• Check supply voltage: Verify that the wall outlet provides stable voltage within the range specified on the Sencor rating label. Avoid using long, thin extension cords.
• Listen for compressor: When the unit attempts to start, does the compressor click and then stop, displaying E5? Repeated clicking suggests a start device or compressor issue.
• Inspect start device: Access the compressor compartment. Remove the plastic cover on the compressor terminals to expose the PTC start relay and overload protector. Look for burn marks or melted plastic.
• Test PTC/overload: Using a multimeter, check the continuity of the overload protector and the approximate resistance of the PTC. An open overload or cracked PTC should be replaced.
• Replace start device: Install a compatible Sencor compressor start relay/overload kit if the original is faulty.
• Compressor test: If the compressor windings are shorted to ground or have abnormal resistance, the compressor is defective, and the sealed system will require professional replacement.

Note: If you are not experienced with mains-voltage and refrigeration components, this repair is best left to a professional technician.