Display shows E2 and the evaporator coil ices up excessively or the unit short-cycles.

Safety warning: Always disconnect the Blastcool wine cooler from mains power before accessing internal components. Sharp metal edges and ice can cause injury.

• Defrost the unit: Turn the cooler off and leave the door slightly open for several hours to melt any heavy ice on the evaporator. Place towels to catch water.
• Access the evaporator: Remove the interior rear panel inside the cooled compartment (usually held by screws). Behind it you will see the evaporator coil and the attached sensor.
• Inspect sensor placement: The evaporator NTC is typically clipped or strapped to the evaporator tubing. Ensure it is firmly attached and not hanging loose or buried deep in ice.
• Check wiring: Follow the sensor wires to where they exit the compartment and down to the main PCB. Look for cuts, crushed insulation, or signs of moisture ingress at connectors.
• Test the sensor: With the unit unplugged, disconnect the evaporator sensor from the PCB and measure resistance with a multimeter. Compare to the expected NTC values. An open circuit or near-zero resistance indicates failure.
• Replace if faulty: Install a new Blastcool evaporator NTC temperature sensor. Clip it securely to the same location on the evaporator coil to ensure accurate defrost control.
• Reassemble and test: Refit the interior panel, restore power, and monitor for reoccurrence of E2 and for normal frost pattern (light, even frost that periodically melts).

If E2 returns immediately with a known-good sensor, the main control PCB or its sensor input circuit may be defective and require professional service.