Danby freezer displays E4 and may not respond correctly to temperature adjustments.

Safety first: Disconnect power before removing any exterior panels or control housings.

Steps to address E4:

• Locate ambient sensor: On many Danby models, 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, crushed, or covered in dust. Clean any heavy dust buildup that could insulate it.
• Check wiring and connector: Follow the sensor wires to the main control board. Ensure the connector is fully seated and there are no broken or frayed wires.
• Test resistance: With the unit unplugged, disconnect the sensor and measure resistance at room temperature. Compare to expected NTC values (similar to cabinet sensor). A reading of 0 ohms or infinite indicates a failed sensor.
• Replace sensor if defective: Install a new ambient temperature sensor and secure it in the original location.
• Control board replacement: If a new sensor does not clear E4, the control board may be misreading the sensor and should be replaced.

Tip: Ensure the freezer is not installed in an environment outside the specified ambient temperature range, as extreme conditions can also trigger sensor-related errors.