Samsung wine cooler shows H0 and the interior may be too cold or the compressor may not cycle correctly.

Safety first: Disconnect power before testing sensors or accessing the control board.

• 1. Check ambient temperature: Ensure the wine cooler is installed within Samsung’s specified ambient range. Very cold rooms can cause sensor readings that trigger H0.
• 2. Verify set temperature: Confirm that the set temperature is appropriate for wine storage and not at the extreme low end.
• 3. Inspect cabinet thermistor: Follow the steps under E1 to locate and test the cabinet temperature sensor. A shorted sensor will read very low resistance.
• 4. Replace thermistor if needed: If the sensor tests shorted or far out of spec, replace it with a Samsung-compatible thermistor.
• 5. Control board replacement: If the sensor is good but H0 persists and temperatures are incorrect, the main PCB may require replacement.

Note: After replacing sensors, allow time for the control to recalibrate and stabilize.