E9 is displayed and the freezer interior light or display may flicker; unit may shut down intermittently.

Safety: Always unplug the freezer before inspecting the terminal block or control module. Do not work on live wiring.

Steps:

• 1. Check the outlet: Test the wall socket with another appliance to confirm stable power. Avoid using extension leads or multi-way adapters.
• 2. Inspect the power cord: Look for cuts, kinks, or burn marks along the cord and at the plug. Replace the cord if damaged (this may require a qualified electrician depending on your region).
• 3. Access terminal block (if external): Some models have a terminal block where the cord connects inside the rear service area. Check for loose screws or discolored terminals.
• 4. Control module inspection: Remove the control housing and look for swollen capacitors, burnt components, or cracked solder joints in the power supply section.
• 5. Replace control module if needed: If the internal power supply is faulty, the recommended repair is to replace the entire control module with a genuine Neff part.
• 6. If mains issues persist: If E9 appears only during storms or when other heavy loads are used, consider having an electrician check your household wiring.