Display shows H1 and the refrigerator or freezer temperature is excessively high.

Immediate actions:

• Check that all doors are fully closed and that gaskets are clean and undamaged. Remove any items preventing proper closure.
• Ensure the appliance has not just been loaded with large quantities of warm food; if so, allow 12–24 hours to stabilize.
• Verify that the temperature settings are correct (not set to a warm mode or holiday mode).

Fan and airflow:

• Open the freezer and listen for the evaporator fan when the compressor is running. If silent, the fan may be faulty or iced over.
• If there is heavy frost on the rear panel, perform a full manual defrost with the unit unplugged and doors open.

When to call a professional: If H1 persists despite good door seals, correct settings, and a working fan, there may be a sealed system issue (refrigerant leak, blocked capillary, weak compressor) that requires a licensed refrigeration technician.