Vissani freezer shows E3 and may not respond correctly to temperature adjustments; compressor may short-cycle.

Safety: Disconnect power before removing any control panel or top cover.

Steps:

• Locate ambient sensor: On many Vissani freezers, the ambient sensor is near the front grille, behind the control panel, or near the condenser area where it can sense room temperature.
• Visual inspection: Check that the sensor is not dangling, touching hot components, or covered in dust. Clean gently with a dry cloth.
• Check connections: Remove the control panel cover, locate the sensor connector on the main control board, and ensure it is fully seated and free of corrosion.
• Test sensor resistance: With the sensor unplugged, measure resistance at room temperature. If it reads open or short, replace the ambient temperature sensor.
• Reassemble and test: After replacement, restore power and verify that E3 clears and the unit responds to temperature changes.
• Board diagnosis: If the sensor and wiring are good but E3 remains, the main control board may be defective and should be replaced by a professional.