Display shows Hi and the cooler will not allow setting a higher temperature or is in alarm.

Safety: This is primarily a temperature alarm; still unplug before removing panels.

Steps:

• 1. Verify actual temperature: Use a separate thermometer inside the cabinet. If the actual temperature is high, treat this as a cooling issue (check condenser, fans, compressor).
• 2. Check door and gasket: Ensure the door closes fully and the gasket is sealing all around. Adjust hinges or replace gasket if needed.
• 3. Improve ventilation: Make sure the cooler has adequate clearance on sides, back, and top per Kalamera installation guidelines. Move it away from heat sources.
• 4. Reset alarm: Many models allow silencing the alarm by pressing any button. Once the temperature drops below the alarm threshold, Hi should clear automatically.
• 5. Sensor check: If the display shows Hi but the interior is actually cool, test and replace the cabinet thermistor as needed.