Systems and methods are described for attributing a primary causative agent for HVAC system usage being above or below an average, the HVAC system being controlled by a self-programming network-connected thermostat. Systems and method are also described interactively and graphically displaying schedule information to a user of an HVAC system controlled by a network-connected thermostat. The displayed information can include indications of the manner in which one or more setpoints was created or last modified. Historical HVAC performance information can also be displayed that can include details of certain energy-effecting events such as setpoint changes, adaptive recovery, as well as automatic and manually set non-occupancy modes.

A method of monitoring a HVAC system to detect erroneous sensor installation. The method includes determining whether a circulation fan has been operational for a first predetermined time interval. If the circulation fan has been operational for the first predetermined time interval, determining whether a cooling demand is present. If the cooling demand is present, determining whether the HVAC system has been conditioning air for the first predetermined time interval responsive to the cooling demand. If the HVAC system has been conditioning the air for the first predetermined time interval, determining whether a difference between an indoor air temperature value corresponding to an enclosed space and an air temperature value from a discharge air temperature (DAT) sensor is greater than a predetermined temperature value. If the difference is not greater than the predetermined temperature value, forwarding a message indicating that the DAT sensor positioned within a duct of the HVAC system is improperly installed.

The present disclosure relates to a centering system for a heating, ventilation, and/or air conditioning (HVAC) unit to be mounted to a curb. The centering system includes a centering wedge configured to couple to a base rail of the HVAC unit, the base rail having a lateral surface and a base surface along a length of the HVAC unit. The centering wedge includes an angled surface configured to extend between the lateral surface of the base rail and the base surface of the base rail. The angled surface is configured to contact the curb during installation of the HVAC unit to guide the HVAC unit toward a centered position on the curb.

An indoor unit (1000) of an air conditioner includes a housing (100) having an upper base plate (110) provided with an air inlet (101), a lower base plate (120) detachably mounted to the upper base plate (110) and provided with an air outlet, and a front cover (130) detachably mounted to the upper base plate (110); a heat exchanger (140) mounted on the upper base plate (110); a fan (142) detachably mounted to the lower base plate (120); and a thrust structure (340) having a body (350) that is disposed to a rear portion of the indoor unit (1000) and has a thrust face (351) abutting against a mounting member to limit a degree of freedom of upward movement of the indoor unit (1000).

In an embodiment, a method of testing a HVAC unit for a disconnected damper motor is provided. An outside air section of a damper assembly is closed and air is circulated through the unit. If a discharge air temperature is not substantially equal to a return air temperature, the damper motor is determined to be disconnected. Otherwise, an economizing function having a free cooling target temperature is started. An outside air temperature is compared to the free cooling target temperature. If the outside air temperature is less than the free cooling target temperature, the damper motor is determined to be disconnected if the damper motor has been commanded to fully open the outside air section. If the outside air temperature is not less than the free cooling target temperature, the damper motor is determined to be disconnected if a discharge air temperature is not substantially equal to an outside air temperature.

The present invention provides a device for quick mounting and dismounting of equipment on ceiling. The device comprises: a face frame (105), the face frame (105) forming a mounting frame having an inner groove, a fixing plate (104) being positioned under the mounting frame, the mounting frame being mounted with a plurality of cylindrical fixing buckles (101), the fixing buckle penetrating through the mounting frame and the fixing buckle (101) further penetrating a tube, the tube being coupled to a foot buckle (103) via a coupling member, a reset structure (102) being arranged under the coupling member, the reset structure (102) being a telescopic member that is arranged between the coupling member and the mounting frame and positioned in a gap between the foot buckle and the fixing buckle, the mounting frame accommodating a product (2).

The present invention provides a device for quick mounting and dismounting of equipment on ceiling. The device comprises: a face frame (105), the face frame (105) forming a mounting frame having an inner groove, a fixing plate (104) being positioned under the mounting frame, the mounting frame being mounted with a plurality of cylindrical fixing buckles (101), the fixing buckle penetrating through the mounting frame and the fixing buckle (101) further penetrating a tube, the tube being coupled to a foot buckle (103) via a coupling member, a reset structure (102) being arranged under the coupling member, the reset structure (102) being a telescopic member that is arranged between the coupling member and the mounting frame and positioned in a gap between the foot buckle and the fixing buckle, the mounting frame accommodating a product (2).

A retrofit control of a ductless mini-split system (DMSS) for use in relation to temperature monitoring within a property. Data indicating a command is transmitted to a controller associated with a ductless mini-split system. The command causes the controller to configure an operation to be performed by the ductless mini-split system. Power output associated with the ductless mini-split system is monitored based on transmitting the data indicating the command. A determination that the operation has been performed by the ductless mini-split system is made based on monitoring the power output. Data indicating that the operation has been performed by the ductless mini-split system is provided for output.

An air treatment system (100) is provided that comprises an air purifier (110) arranged to treat a first parameter of ambient air; a controller (130) arranged to control operation of the air purifier (110); and a sensor (120) arranged to detect a value indicative of the first parameter, and to output sensor data indicative of the value to the controller. The controller (130) is arranged to determine whether the sensor (120) and the air purifier (110) are in a same air space by controlling the air purifier (110) to operate in a test mode and analyzing sensor data from the sensor (120) received during the test mode. If the sensor (120) and the air purifier (110) are determined to be in the same air space, the controller (130) is arranged to control the air purifier (110) to operate in a mode based on sensor data from the sensor (120).

An interface module configured to control a motor in an HVAC system is provided. The interface module includes a processor coupled in communication with a memory. The processor is configured to wirelessly receive configuration data from a wireless device, store the wirelessly received configuration data in the memory, determine a first operating parameter at which to operate the motor based on the configuration data and at least one signal received from a first device, and control the motor in accordance with the first operating parameter.