E7 appears and the internal circulation fan does not run, causing uneven temperatures and frost buildup.

Safety: Unplug the freezer before accessing the fan area. Fan blades can be sharp; avoid spinning them by hand when powered.

Steps:

• 1. Confirm fan operation: After the door has been closed for several minutes (and with door switch held closed if needed), you should normally hear the fan running. If silent and E7 is displayed, proceed.
• 2. Access the fan: Remove drawers and the rear inner panel of the freezer to expose the evaporator and fan housing.
• 3. Check for ice blockage: Look for heavy ice around the fan shroud or blades. If present, fully defrost the unit and ensure the defrost system is working (see defrost-related errors).
• 4. Inspect wiring and connector: Verify the fan connector is firmly seated and wires are not cut or pinched.
• 5. Test the fan motor: With the fan disconnected and the appliance unplugged, measure resistance across the fan motor terminals. An open circuit indicates a failed motor. On DC fans, also check for shorts to ground.
• 6. Replace the fan motor: Order a Neff-compatible evaporator fan motor. Remove the old motor from the housing, transfer any grommets or brackets, and install the new motor. Reconnect wiring and ensure the blades spin freely.
• 7. Control board check: If the fan motor is good but never receives voltage when it should, the main control module may be defective and should be tested/replaced by a technician.