E5 appears on the display and the compressor may not start or runs erratically.

Critical safety: Unplug the refrigerator. Work at the rear only when the unit is disconnected. The compressor and start components are connected to mains voltage.

Steps:

• 1. Access the compressor compartment: Remove the lower rear cover to expose the compressor and electrical box on its side.
• 2. Listen for behavior (before unplugging): If you previously heard a clicking sound every few minutes with no sustained compressor run, the start device or overload is suspect.
• 3. Inspect the start relay/PTC and overload: Remove the plastic cover on the compressor terminals. Check for burnt smell, cracked casing, or melted connectors on the CDA compressor start relay/PTC and overload protector.
• 4. Replace suspect start components: These parts are relatively inexpensive and commonly fail. Using your model number, order a compatible CDA compressor start relay/PTC and overload protector. Swap them like-for-like, ensuring firm connections.
• 5. Check wiring: Inspect the harness from the main PCB to the compressor for damage or loose spade terminals.
• 6. If E5 persists and compressor still won’t run: The compressor windings may be open or seized, or the main PCB may not be supplying power. Testing compressor windings and live voltage should only be done by a refrigeration engineer.

Warning: Do not attempt to open the sealed refrigeration system or replace the compressor yourself; this requires F-Gas certified personnel.