Display shows H1 and temperature reading is extremely high or flashing

Safety: You can perform basic checks with the unit plugged in, but unplug before removing panels or touching internal components.

• Check door seal: Ensure the door is fully closing and the gasket is not torn, warped, or obstructed by shelves or bottles.
• Verify airflow: Listen for the evaporator fan running when the compressor is on. If silent, the fan may have failed or be blocked by ice.
• Clean condenser: Pull the unit away from the wall, unplug it, and vacuum dust from the rear condenser coils and ventilation grilles. Poor airflow can cause high temperatures.
• Allow recovery time: If the door was recently open for loading, allow several hours for temperature to drop and the H1 alarm to clear.
• Check for frost or ice: Heavy frost on the evaporator can block airflow. Defrost the unit fully and monitor performance.
• If temperature does not drop: A sealed system issue (low refrigerant, compressor problem) may exist. This requires a licensed refrigeration technician.