A refrigerant cycle apparatus includes a refrigerant circuit that circulates a refrigerant, and a leak sensor that detects a refrigerant leaking from the refrigerant circuit, in which the refrigerant cycle apparatus includes, as an operating mode, a recovery mode for recognizing occurrence of an abnormality in the leak sensor and recovering a refrigerant to a predetermined location in the refrigerant circuit.

The present invention relates to systems and methods for improved building systems management and maintenance. The present invention provides a system for providing an augmented reality-like interface for the management and maintenance of building systems, specifically the mechanical, electrical, and plumbing (MEP) systems within a building, including the heating, ventilation, and air-conditioning (HVAC) systems.

A building monitoring system, wherein the system comprises an HVAC monitor, which comprised a condensing unit connector, an air handler connector, a thermostat connector and a control module, a wetness detector; and a communicator. The communicator accesses a location of the building monitoring system and selectively communicates with a technician based at least in part on the location. A monitor system for use with an existing HVAC unit, wherein the HVAC unit has a condenser or furnace, an air handler, and a thermostat, the HVAC monitor system comprising at least one condenser or furnace sensor, at least one air handler sensor and at least one control module. A wetness monitor system, comprising at least one wetness detector connected to a control, wherein the control is also connected to a network and the network is connected to a flow shutoff valve. A method of monitoring a location for wetness comprising detecting wetness through at least one wetness detector, monitoring the state of a shutoff valve.

A building monitoring system, wherein the system comprises an HVAC monitor, which comprised a condensing unit connector, an air handler connector, a thermostat connector and a control module, a wetness detector; and a communicator. The communicator accesses a location of the building monitoring system and selectively communicates with a technician based at least in part on the location. A monitor system for use with an existing HVAC unit, wherein the HVAC unit has a condenser or furnace, an air handler, and a thermostat, the HVAC monitor system comprising at least one condenser or furnace sensor, at least one air handler sensor and at least one control module. A wetness monitor system, comprising at least one wetness detector connected to a control, wherein the control is also connected to a network and the network is connected to a flow shutoff valve. A method of monitoring a location for wetness comprising detecting wetness through at least one wetness detector, monitoring the state of a shutoff valve.

A moisture sensing system for a refrigerant flow of a heating, ventilation and air conditioning (HVAC) system includes a moisture sensor including a color change material sample located in a refrigerant flow of the HVAC system. The color change material sample configured to change color as an indication of a moisture level of the refrigerant flow. A color sensor is in optical communication with the moisture sensor and is configured to sense a color of the color change material and communicate the sensed color to an HVAC system controller. A method of operating an HVAC system includes exposing a condensing a color change material sample to a flow of refrigerant and sensing a color of the color change material via a color sensor. The color is indicative of a moisture level of the flow of refrigerant. The sensed color is communicated to an HVAC system controller.

A moisture sensing system for a refrigerant flow of a heating, ventilation and air conditioning (HVAC) system includes a moisture sensor including a color change material sample located in a refrigerant flow of the HVAC system. The color change material sample configured to change color as an indication of a moisture level of the refrigerant flow. A color sensor is in optical communication with the moisture sensor and is configured to sense a color of the color change material and communicate the sensed color to an HVAC system controller. A method of operating an HVAC system includes exposing a condensing a color change material sample to a flow of refrigerant and sensing a color of the color change material via a color sensor. The color is indicative of a moisture level of the flow of refrigerant. The sensed color is communicated to an HVAC system controller.

A system includes a use side device of an air conditioner; a terminal; and a management server, wherein the terminal transmits first information for identifying the use side device installed in a predetermined property to the management server, and wherein the management server stores second information as information on a use side device to be installed in the predetermined property, and based on the first information and the second information received from the terminal, the management server determines whether the use side device installed in the predetermined property matches the use side device to be installed in the predetermined property.

A system includes a use side device of an air conditioner; a terminal; and a management server, wherein the terminal transmits first information for identifying the use side device installed in a predetermined property to the management server, and wherein the management server stores second information as information on a use side device to be installed in the predetermined property, and based on the first information and the second information received from the terminal, the management server determines whether the use side device installed in the predetermined property matches the use side device to be installed in the predetermined property.

An image acquisition unit (211) acquires a photographed image obtained by photographing an air-conditioning indoor unit including a plurality of air outlets. An image collation unit (212) collates a template image wherein an air-conditioning indoor unit of a same type as the air-conditioning indoor unit is shown with the photographed image. An air outlet identification unit (213) determines an air outlet identifier of each air outlet in the photographed image based on a collation result, and on air outlet identification data indicating an air outlet identifier to be associated with each air outlet in the template image. An identification result display unit (214) displays the photographed image by superimposing the air outlet identifier on each air outlet in the photographed image.

An image acquisition unit (211) acquires a photographed image obtained by photographing an air-conditioning indoor unit including a plurality of air outlets. An image collation unit (212) collates a template image wherein an air-conditioning indoor unit of a same type as the air-conditioning indoor unit is shown with the photographed image. An air outlet identification unit (213) determines an air outlet identifier of each air outlet in the photographed image based on a collation result, and on air outlet identification data indicating an air outlet identifier to be associated with each air outlet in the template image. An identification result display unit (214) displays the photographed image by superimposing the air outlet identifier on each air outlet in the photographed image.