Display shows E5; compressor may not start or may run briefly then stop; interior warms up.

Critical safety: Work on the compressor and start components only with the refrigerator unplugged. Do not attempt to open the sealed refrigeration system; this requires certified equipment and training.

Steps:

• 1. Listen for compressor behavior: After plugging in, listen at the back. A repeated clicking sound with no sustained humming suggests a start relay or compressor issue.
• 2. Access compressor compartment: Remove the lower rear cover to expose the compressor, start relay/PTC, and overload protector.
• 3. Inspect start relay/PTC: Disconnect the relay from the compressor terminals. Shake it gently; if it rattles or shows signs of burning, it is likely defective.
• 4. Test compressor windings: With the relay removed and power disconnected, measure resistance between the three compressor pins. You should see three finite resistances; none should be open or shorted to the compressor shell. If windings are open or shorted, the compressor is faulty.
• 5. Replace start components: If the compressor tests good, install a new compressor start relay/PTC and overload protector compatible with your Hansa model.
• 6. Inverter models: If your Hansa refrigerator uses an inverter compressor, E5 can indicate an inverter PCB fault. Inspect the inverter module for burn marks. Replacement of the inverter module should be done by a professional.

When to call a technician: If compressor windings are faulty or if an inverter module is suspected, contact an authorized Hansa service center. Compressor replacement involves refrigerant handling and is not a DIY task.