Display shows H1 and the cabinet temperature is very high; wine is warm.

Safety: No internal electrical work is required for basic checks; unplug only if removing panels.

• Check door: Ensure the door is fully closing and the gasket is intact and clean. Remove any bottles blocking closure.
• Allow recovery: If you recently loaded many warm bottles, allow 12–24 hours for the temperature to stabilize. Keep the door closed as much as possible.
• Ventilation and fan: Verify that the unit has proper clearance and that the condenser fan (if equipped) runs when the compressor is on. Clean dust from the condenser coils.
• Compressor operation: Listen for the compressor running. If it is not running at all, or runs but the cabinet never cools, there may be a sealed system issue or failed compressor.
• When to call a technician: If H1 persists after cleaning, ensuring door seal, and allowing recovery time, contact a professional for sealed system diagnosis.