Dehumidifier shows E5 and compressor does not start or stops quickly

Safety: Disconnect power. Capacitors inside may hold charge; avoid touching PCB components unless discharged and you are competent to do so.

Steps:

• Clean the condenser coil (warm coil) with a soft brush and vacuum. Ensure the rear and sides of the unit have adequate ventilation.
• Listen for compressor attempting to start (clicking or brief hum). If it repeatedly tries and stops, suspect the start device.
• Access the compressor terminal cover and inspect the start relay/PTC and overload protector. Look for burn marks or melted plastic.
• Test or replace the start relay/PTC with a Dimplex-specified compressor start device for your model. Ensure tight connections on the compressor terminals.
• Inspect wiring from compressor to main PCB for heat damage or loose spade connectors.
• If E5 persists and the compressor draws locked-rotor current or fails to start even with a new start device, the compressor itself may be mechanically seized and require professional replacement.

Warning: Do not bypass overload or safety devices; this is dangerous and can cause fire or further damage.