Samsung wine cooler displays H1 and the interior temperature is much warmer than the set point.

Safety first: Always unplug the unit before inspecting electrical components. For basic checks, you can leave it powered to observe behavior, but do not remove panels while energized.

• 1. Check door seal: Inspect the door gasket for gaps, tears, or debris. Close the door on a sheet of paper at several points; if the paper pulls out easily, the seal may be weak or the door misaligned. Clean the gasket and adjust hinges if needed.
• 2. Allow recovery time: If you recently loaded many warm bottles or had a power outage, the H1 alarm may be temporary. Allow 12–24 hours for the temperature to stabilize.
• 3. Verify cooling operation: Listen for the compressor and internal fan. If neither runs for long periods, there may be a control or sensor issue. If they run continuously but temperature does not drop, there may be a sealed system problem.
• 4. Check cabinet thermistor: Follow the steps similar to E1: locate, inspect, and test the cabinet temperature sensor. Replace if readings are out of spec.
• 5. Inspect condenser and airflow: Clean condenser coils and ensure the condenser fan is operating to prevent overheating and poor cooling.
• 6. Call a technician for sealed system issues: If the compressor runs but the unit does not cool and there is no frost pattern on the evaporator, the system may be low on refrigerant or have a restriction, requiring professional service.

Note: After correcting the cause, some models allow you to silence or reset the alarm via the control panel.