A controller for a building control system includes processors and memory storing instructions that, when executed by the processors, cause the processors to perform operations including identifying zones within a building, analyzing data associated with the zones, and generating zone groupings based on the data associated with the zones. Each of the zone groupings define zone groups and specify which of the zones are grouped together to form each of the zone groups. The operations also include identifying a particular zone grouping from zone groupings based on the data associated with zones and using the particular zone grouping to generate control signals to operate equipment of the building control system to provide heating or cooling to the zones.

An actuator in a HVAC system includes a mechanical transducer, a processing circuit, a wireless transceiver, and a power circuit. The processing circuit includes a processor and memory and is configured to operate the mechanical transducer according to a control program stored in the memory. The wireless transceiver is configured to facilitate bidirectional wireless data communications between the processing circuit and an external device. The power circuit is configured to draw power from a wireless signal received via the wireless transceiver and power the processing circuit and the wireless transceiver using the drawn power. The processing circuit is configured to use the power drawn from the wireless signal to wirelessly transmit data stored in the memory of the actuator to the external device via the wireless transceiver, wirelessly receive data from the external device via the wireless transceiver, and store the data received from the external device in the memory.

An air-conditioning system includes: a plurality of indoor units including respective wireless communication units each of which emits radio waves; and a mobile terminal unit configured to wirelessly communicate with each of the wireless communication units. The mobile terminal unit detects the radio waves emitted by the wireless communication units, and makes a notification indicating a presence of one or ones of the indoor units that are determined operable based on radio wave intensities of the detected radio waves.

An air conditioner system is provided that may include an air conditioner including a compressor, an outdoor heat exchanger that performs heat exchange using refrigerant discharged from the compressor, a camera module that photographs the outdoor heat exchanger, a sensor unit including a plurality of sensors, and a communication unit that transmits an image of the outdoor heat exchanger photographed by the camera module and sensor data detected by the sensor unit, and a server including a communication unit that receives the image of the outdoor heat exchanger photographed by the camera module and the sensor data detected by the sensor unit, and a defrosting controller that determines whether the outdoor heat exchanger is frosted based on image data of the outdoor heat exchanger photographed by the camera module, and predicts a frosting timing based on the sensor data detected by the sensor unit.

A system and method are disclosed for dynamically learning the optimum energy consumption operating condition for a building and monitor/control energy consuming equipment to keep the peak demand interval at a minimum. The dynamic demand limiting algorithm utilized employs two separate control schemes, one for HVAC loads and one for non-HVAC loads. Separate operating parameters can be applied to the two types of loads and multiple non-HVAC (control zones) loads can be configured. The algorithm uses historical peak demand measurements in its real-time limiting strategy. The algorithm continuously attempts to reduce peak demand within the user configured parameters. When a new peak is inevitable, the algorithm strategically removes and/or introduces loads in a fashion that limits the new peak magnitude and places the operating conditions within the user configured parameters. In an embodiment, the algorithm that examines the previous seven days of metering information to identify a peak demand interval. The system then uses real-time load information to predict the demand peak of the upcoming interval, and strategically curtails assigned loads in order to limit the demand peak so as not to set a new peak.

A ventilation and air conditioning system includes: an outdoor air supply fan; an exhaust fan; and a system controller to control operations of the outdoor air supply fan and the exhaust fan. The system controller includes: a link controller; an exhaust air volume receiver; a disconnection determinator; and a disconnected state supply air controller. The link controller controls the outdoor air supply fan and the exhaust fan in a linked manner. The exhaust air volume receiver receives, from the exhaust fan, an exhaust air volume signal indicating an exhaust air volume of the exhaust fan. The disconnection determinator determines a disconnected state where the exhaust air volume receiver fails to receive the exhaust air volume signal. The disconnected state supply air controller controls the outdoor air supply fan at a predetermined air volume when the disconnected determinator determines the disconnected state.

A controller for a building control system includes processors and memory storing instructions that, when executed by the processors, cause the processors to perform operations including identifying zones within a building, analyzing data associated with the zones, and generating zone groupings based on the data associated with the zones. Each of the zone groupings define zone groups and specify which of the zones are grouped together to form each of the zone groups. The operations also include identifying a particular zone grouping from zone groupings based on the data associated with zones and using the particular zone grouping to generate control signals to operate equipment of the building control system to provide heating or cooling to the zones.

A multi-split air-conditioning system, and a method for calculating a heat exchange capacity thereof. The method includes: acquiring a total heat exchange capacity of a multi-split air-conditioning system; acquiring a pressure difference between two pressure measurement points on each air pipe; acquiring the distance between the two pressure measurement points on each air pipe; acquiring the pipe diameter of each air pipe; acquiring the friction factor of each air pipe; acquiring the density of a heat exchange medium in each air pipe; and according to the total heat exchange capacity of the multi-split air-conditioning system, the pressure difference and distance between the two pressure measurement points on each air pipe, the pipe diameter and friction factor of each air pipe, and the density of the heat exchange medium in each air pipe, calculating a heat exchange capacity of each indoor unit.

An air conditioning system includes: a controller that controls an air conditioner; a thermostat that measures a temperature of an air conditioning target space, changes a contact point to an ON state or an OFF state in accordance with a measurement result, and manages input of a control signal to the controller to control operation of a component of the air conditioner; a connection line group that electrically connects the thermostat and the controller; a relay that switches, to either a conductive state or a cut-off state, at least one of a first connection line that controls a compressor of the air conditioner or a second connection line that controls an indoor fan of the air conditioner, among the connection line group; and a leakage detection sensor that detects refrigerant leakage from the air conditioner, and outputs a signal that controls the relay.

A system for remote diagnostic analysis of a heating, ventilation and air condition (HVAC) system is provided. The system includes a thermostat in operable communication with at least one peripheral component of the HVAC system and configured to receive information relating to the at least one peripheral component, and a server in operable communication with the thermostat for receiving and analyzing the information. The server causes the at least one peripheral component to conduct a diagnostic test and analyzes the test result to perform a root cause analysis of a system malfunction.