A heating, ventilation, and air conditioning (HVAC) system includes multiple circuit components that enable determining that a refrigerant leak is present in the HVAC system based on a signal. The circuit components then send a first set of instructions to a first set of control systems associated with one or more fans in response to the refrigerant leak being present. The first set of instructions causes the one or more fans to activate. The system then determines that the refrigerant leak signal is no longer present, and initiates a counter to detect when a period of time has passed in response to determining that the refrigerant leak signal is no longer present. The system then sends a second set of instructions to the first control system to cause the fans to return to base operating conditions in response to the counter indicating the period of time has passed.

A heating, ventilation, and air conditioning (HVAC) system includes multiple circuit components that enable determining that a refrigerant leak is present in the HVAC system based on a signal. The circuit components then send a first set of instructions to a first set of control systems associated with one or more fans in response to the refrigerant leak being present. The first set of instructions causes the one or more fans to activate. The system then determines that the refrigerant leak signal is no longer present, and initiates a counter to detect when a period of time has passed in response to determining that the refrigerant leak signal is no longer present. The system then sends a second set of instructions to the first control system to cause the fans to return to base operating conditions in response to the counter indicating the period of time has passed.

An air conditioner controlling method of an air conditioner repeater is provided. The method includes based on a remote controller being connected to the air conditioner repeater via a cable, generating pairing information, transferring the generated pairing information to the remote controller via the cable, based on a response message for the pairing information being received from the remote controller via the cable, performing pairing with the remote controller, and based on the wired connection with the remote controller is released and an air conditioner and the air conditioner repeater are connected via a cable, transferring a wireless signal received from the remote controller in a Bluetooth method to the air conditioner.

An air conditioner controlling method of an air conditioner repeater is provided. The method includes based on a remote controller being connected to the air conditioner repeater via a cable, generating pairing information, transferring the generated pairing information to the remote controller via the cable, based on a response message for the pairing information being received from the remote controller via the cable, performing pairing with the remote controller, and based on the wired connection with the remote controller is released and an air conditioner and the air conditioner repeater are connected via a cable, transferring a wireless signal received from the remote controller in a Bluetooth method to the air conditioner.

A visible light sensor may be configured to sense environmental characteristics of a space using an image of the space. The visible light sensor may be controlled in one or more modes, including a daylight glare sensor mode, a daylighting sensor mode, a color sensor mode, and/or an occupancy/vacancy sensor mode. In the daylight glare sensor mode, the visible light sensor may be configured to decrease or eliminate glare within a space. In the daylighting sensor mode and the color sensor mode, the visible light sensor may be configured to provide a preferred amount of light and color temperature, respectively, within the space. In the occupancy/vacancy sensor mode, the visible light sensor may be configured to detect an occupancy/vacancy condition within the space and adjust one or more control devices according to the occupation or vacancy of the space. The visible light sensor may be configured to protect the privacy of users within the space via software, a removable module, and/or a special sensor.

An actuator for controlling a flow regulation device. The actuator includes a drive device coupled to the flow regulation device and a motor coupled to the drive device and operable to move the drive device. The actuator further includes a processing circuit configured to receive a first measurement of a characteristic, control the actuator to reposition the flow regulation device in a first direction, receive a second measurement of the characteristic, determine an installation error associated with at least one of the actuator and the flow regulation device based on the first measurement and the second measurement.

An actuator for controlling a flow regulation device. The actuator includes a drive device coupled to the flow regulation device and a motor coupled to the drive device and operable to move the drive device. The actuator further includes a processing circuit configured to receive a first measurement of a characteristic, control the actuator to reposition the flow regulation device in a first direction, receive a second measurement of the characteristic, determine an installation error associated with at least one of the actuator and the flow regulation device based on the first measurement and the second measurement.

An auxiliary drain pan for installation vertically below a humidifier. The pan has a base and a peripheral wall around the base and a single opening formed in the base adapted to form an anti-backflow connection with a conduit from the humidifier for directing liquid from the humidifier through the opening and a drainage connector, the anti-backflow connection preventing a reverse flow of liquid from the opening into the humidifier. The pan has a structure for supporting the base and having connecting features for connection with a vertical surface in an installed position, with the base secured in a substantially horizontal position in the installed position.

An auxiliary drain pan for installation vertically below a humidifier. The pan has a base and a peripheral wall around the base and a single opening formed in the base adapted to form an anti-backflow connection with a conduit from the humidifier for directing liquid from the humidifier through the opening and a drainage connector, the anti-backflow connection preventing a reverse flow of liquid from the opening into the humidifier. The pan has a structure for supporting the base and having connecting features for connection with a vertical surface in an installed position, with the base secured in a substantially horizontal position in the installed position.

An air conditioner shut-off system includes an overflow conduit that is coupled, at one end, to the drainage system of an air handler unit of the air conditioner system. The opposite end of the overflow conduit is positioned over an overflow container, which is suspended by a harness at the lower end of the harness. The upper end of the harness being operably coupled to the shut off switch throw of a shut off switch, which is provided on or proximate to the air handler unit. If the drainage system becomes obstructed, water will flow into the overflow container through the conduit, and eventually the mass of the water accumulated in the overflow container will produce enough force acting on the shut off switch throw through the harness to flip the shut off switch throw to the OFF position, resulting in the air conditioner system being shut off.