Display shows E05; compressor does not start or stops shortly after starting.

Safety first: Disconnect power. Do not attempt to open the sealed refrigeration system. High voltage is present at the compressor terminals.

Steps:

• 1. Access compressor compartment: Remove the rear lower panel to expose the compressor, start relay, and overload protector.
• 2. Inspect start device: Remove the plastic cover on the compressor terminals. Check the PTC relay and overload for burn marks, melted plastic, or rattling pieces inside.
• 3. Test continuity: With a multimeter, test the overload protector for continuity. Replace if open at room temperature.
• 4. Check compressor windings: Measure resistance between the three compressor pins (C, S, R). Compare to service specs. A short to ground or open winding indicates a failed compressor (requires professional replacement).
• 5. Replace start relay/overload: If the compressor windings test good but the start device is damaged or out of spec, install a new Blomberg start relay/overload assembly.

If E05 persists and the compressor hums then clicks off, the compressor may be mechanically locked and should be evaluated by a refrigeration technician.