Abstract: An air-conditioning system includes: an air conditioner mounted on a mobile body having a cold storage; an internal temperature sensor configured to measure an internal temperature inside the cold storage; a notification device configured to notify an error of the air conditioner; and a control unit configured to control an air-conditioning operation.

Abstract: The refrigeration device has an inverter device, an electric compressor, a condenser, an evaporator, a condenser fan, an evaporator fan, and a controller. An AC output from a power generator is supplied to the inverter device. A refrigerant discharge amount of the electric compressor is controlled by the inverter device. The refrigerant from the electric compressor flows in the condenser, and the condenser causes the refrigerant to radiate heat to outside air outside a container. The refrigerant from the condenser flows in the evaporator, and the evaporator cools an interior of the container. The condenser fan is driven by a DC output from a DC power supply device and blows air to the condenser. The evaporator fan is driven by the DC output from the DC power supply device and blows air to the evaporator. The controller controls at least the electric compressor, the inverter device, and the engine.