Display shows H1 and the interior temperature reading is abnormally high, often with the compressor running continuously.

Safety: Unplug the unit before removing panels. Do not puncture any refrigerant lines.

Steps to respond to H1:

• Check the door: Ensure the door is fully closing and the gasket is intact. Look for racks or bottles preventing closure.
• Inspect door gasket: Run a thin strip of paper around the door seal; if it pulls out easily in spots, the gasket may be leaking. Adjust door hinges or replace the gasket as needed.
• Verify cooling system operation: With the unit running (briefly plug in), check if the compressor and condenser fan are operating and if the evaporator coil gets cold after 10–15 minutes.
• Clean condenser coil: Remove dust and debris from the condenser to improve heat rejection.
• Check evaporator fan: Ensure the interior fan is running and circulating air. Replace the evaporator fan motor if it is not operating.
• Monitor temperature: After corrections, allow several hours for the temperature to drop. If the compressor runs continuously but the cabinet does not cool, a sealed system issue (e.g., refrigerant leak) is likely and requires a professional.

Warning: Do not attempt to recharge refrigerant or open the sealed system yourself; this must be done by a licensed technician.