Display shows H1 and the cabinet temperature is much higher than the setpoint.

Safety: Always unplug the unit before removing panels. Basic checks can be done with power on but avoid internal components.

• Check door and gasket: Ensure the door is fully closing and the gasket is not torn or warped. Adjust hinges or replace gasket if needed.
• Verify fans and compressor: With the unit plugged in, listen for the compressor and internal fan. If silent, investigate fan or compressor faults.
• Allow recovery: If the door was left open or the unit was recently loaded with warm bottles, allow 12–24 hours for temperature to stabilize.
• Inspect condenser: Clean the rear condenser coil and ensure the condenser fan is running.
• If no cooling: If the compressor runs but there is no cooling and frost pattern is abnormal, a sealed system issue (refrigerant leak or restriction) is likely and requires a professional technician.