Safety: Unplug the appliance before removing the control panel or top cover.

Check the ambient sensor:

Locate sensor: On many Zanussi models, the ambient sensor is located near the top front, behind the display/control panel or in a small grille on the cabinet front.
Remove control panel: Carefully unclip or unscrew the control fascia to access the sensor and wiring. Do not pull hard on the ribbon cables.
Inspect sensor and connector: Look for discoloration, corrosion, or loose fit. Reseat the connector.
Test resistance: Disconnect the sensor and measure resistance at room temperature. Compare to typical NTC values. Replace if open or shorted.
Check harness to PCB: Ensure the harness from the sensor to the main board is intact and not pinched.
Replace faulty parts: Install a new ambient NTC sensor if defective. If the sensor is good but E5 persists, the main PCB may need replacement.

Note: Incorrect ambient sensing can cause poor temperature regulation and excessive running. If unsure, seek professional service.

Display shows E5 and the refrigerator runs continuously or does not cool correctly

Possible Causes