Refrigerator displays F5; compressor may not start or may run continuously.

Critical safety: Work on the compressor area only with power disconnected. Do not open the sealed refrigeration system; this requires certified service.

Basic checks:

• Listen for compressor: After restoring power, listen at the back. If you hear repeated clicking but no steady hum, the start device may be failing.
• Inspect start device: Unplug the unit, remove the rear lower cover, and locate the start relay/PTC on the compressor terminals. Check for burn marks, melted plastic, or rattling when shaken.
• Replace start device (if accessible): Disconnect the old relay/PTC and install a Miele‑approved replacement, matching wiring positions exactly.
• Check wiring: Ensure all spade connectors are tight and free of corrosion.

Important: If a new start device does not resolve the issue, the compressor or inverter module may be defective. These repairs involve refrigerant handling and should be performed by an authorized Miele technician.