Abstract: An electronic access control device for controlling data access to Heating, Ventilating and Air Conditioning (HVAC) devices of an HVAC system includes electronic communication circuits and a processor connected to the electronic communication circuits. An electronic communication circuit communicates via a first communication link with an external computing device, separate from the HVAC system. An electronic communication circuit communicates with one or more of the HVAC devices via a second communication link.

Abstract: For controlling an HVAC component (3), a physical identifier object (5) associated with the HVAC component (3) is arranged in an area (41) with access to a wireless network (6) and at a location distant and separated from the HVAC component (3). Identifier information is obtained from the physical identifier object (5) by a mobile communication device (1) and transmitted via the wireless network (6) to a remote computer system (2). The remote computer system (2) returns HVAC component data linked to the identifier information. The mobile communication device (1) uses the component data for generating a user interface (100) for an HVAC virtual room unit for controlling the HVAC component (3). User commands received via the user interface (100) are transmitted by the mobile communication device (1) via the remote computer system (2) to the HVAC component (3) for controlling the HVAC component (3).

Abstract: For monitoring an HVAC system (1), HVAC data reporting messages are received and stored in a cloud-based computer system (4). Each HVAC data reporting message includes one or more operation data values included by an HVAC controller (22) of the HVAC system (1). The cloud-based computer system (4) generates (S73) remote diagnoses for a particular HVAC device, using a plurality of HVAC reporting messages received from a plurality of the HVAC controllers (22) from one or more HVAC systems (1). Each remote diagnosis is generated (S73) by using more than one operational data value, included in HVAC reporting messages received (S71) received from HVAC controllers (22) of more than one HVAC systems (1) and/or from at least two different types of operational data values. A diagnosis message which includes a remote diagnosis is transmitted to a diagnosis processing system for the particular HVAC device.

Abstract: For generating for a user augmented reality information (12) related to an HVAC component (2), a circuit of a mobile communication device (1) obtains a component identification of the HVAC component (2) and generates the augmented reality information (12) using the component identification. The augmented reality information (12) is displayed on a display unit (11) of the mobile communication device (1) and includes a user interface element (121) for initiating an operation of the HVAC component (2). Responsive to activation of the user interface element (121), the circuit generates a control command for the operation of the HVAC component (2) and transmits the control command via a cloud-based computer system (3) to the HVAC component (2), commanding the HVAC component (2) to perform the operation and enabling the user to visually verify execution of the operation by the HVAC component (2).

Abstract: For controlling an HVAC component (3), a physical identifier object (5) associated with the HVAC component (3) is arranged in an area (41) with access to a wireless network (6) and at a location distant and separated from the HVAC component (3). Identifier information is obtained from the physical identifier object (5) by a mobile communication device (1) and transmitted via the wireless network (6) to a remote computer system (2). The remote computer system (2) returns HVAC component data linked to the identifier information. The mobile communication device (1) uses the component data for generating a user interface (100) for an HVAC virtual room unit for controlling the HVAC component (3). User commands received via the user interface (100) are transmitted by the mobile communication device (1) via the remote computer system (2) to the HVAC component (3) for controlling the HVAC component (3).

Abstract: A control adapter for fastening on a HVAC device includes a wireless communication interface for communicating control signals between a remote control device and the control adapter. A wireless near-field communication interface communicates control signals between the control adapter and the HVAC device. A control circuit converts the control signals received from the wireless communications interface into the control signals of the wireless near-field communication interface and converts the control signals received from the wireless near-field communication interface into control signals of the wireless communication interface.

Abstract: For monitoring an HVAC system (1), HVAC data reporting messages are received and stored in a cloud-based computer system (4). Each HVAC data reporting message includes one or more operation data values included by an HVAC controller (22) of the HVAC system (1). The cloud-based computer system (4) generates (S73) remote diagnoses for a particular HVAC device, using a plurality of HVAC reporting messages received from a plurality of the HVAC controllers (22) from one or more HVAC systems (1). Each remote diagnosis is generated (S73) by using more than one operational data value, included in HVAC reporting messages received (S71) received from HVAC controllers (22) of more than one HVAC systems (1) and/or from at least two different types of operational data values. A diagnosis message which includes a remote diagnosis is transmitted to a diagnosis processing system for the particular HVAC device.

Abstract: A control adapter for fastening on a HVAC device includes a wireless communication interface for communicating control signals between a remote control device and the control adapter. A wireless near-field communication interface communicates control signals between the control adapter and the HVAC device. A control circuit converts the control signals received from the wireless communications interface into the control signals of the wireless near-field communication interface and converts the control signals received from the wireless near-field communication interface into control signals of the wireless communication interface.