Trane International Inc.

American Standard International Inc.

American Standard Inc.

Carl L Garrett

Robert Wayne Helt

Timothy Wayne Storm

Daniel John Blair

Gordon Jeffrey Hugghins

Karl J Mutchnik

Drew Whitehurst

Jeffrey Lee Stewart

Mark Eldo Groskreutz

Nathan Smith

William David Daugherty, Iii

Caleb A Davis

Mageshkumar Muthuswamy

Mahfuz Imam

Gang (Jacky) Chen

Prerana Maslekar

Kevin B Mercer

Bradley Thomas Wilson

Jonathan David Douglas

Christopher Blake Smith

John Raymond Edens

Alan Dale Marble

Randy S Amborn

Gary Lee Sapp

Steven A Tice

James T Vershaw

John Tanner Taylor

Darryl Elliott Denton

Roger L Boydstun

Kristin Lyn Schaefer

Brett R Schneider

W Randall Erwin

Nathan P Parker

Amy N Sorensen

Dale C Cotton

James W Barnard

Robert G Royoroft

Rick St Mars

Methods and related systems for operating a climate control system for an indoor space are disclosed. In an embodiment, the method includes establishing a connection between a device and a hub of the climate control system along a first signal pathway, wherein at least a portion of the first signal pathway comprises a short-range radio connection between the device and a first component of the system. In addition, the method includes monitoring one or more parameters of the first signal pathway and one or more parameters of a second signal pathway extending between the device and the hub, wherein at least a portion of the second signal pathway comprises a short-range radio connection between the device and a second component of the system. Further, the method includes re-routing the connection between the portable device and the system hub from the first signal pathway to the second signal pathway.

Systems and methods for seamlessly transferring a radio connection between components of a climate control system

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.

HVAC system including smart diagnostic capabilities

Systems and methods are disclosed for validating the installation and operation of a fault detection and diagnostic module that monitors a component of an HVAC system. A remote diagnostic server is in operative communication with the HVAC system, and with the fault detection and diagnostic module. A user device communicates data to the remote diagnostic server that defines an association between the fault detection and diagnostic module and the HVAC system. The remote diagnostic server initiates an installation validation by sending a command to the HVAC system that causes the monitored component to initiate an event that is expected to be reported by the fault detection and diagnostic module. For example, a fan motor is turned on. If correctly installed, the fault detection and diagnostic module senses the event, and reports the event to the remote diagnostic server, which confirms the association. The remote diagnostic server sends a message to the user device indicating the result of the validation.

Method of associating a diagnostic module to HVAC system components

HVAC system including smart diagnostic capabilites

A method of operating a diagnostic data collection device and a diagnostic data bus for an HVAC system are disclosed. In an embodiment, the diagnostic data collection device includes a diagnostic communication interface and a flexible interface module. The interface module measures electrical properties associated with an HVAC component. Electrical properties may include a sensor output and may include analog and digital signals. The diagnostic data collection device generates an exception message if the sensed property is out of specification. Evaluation rules are provided to detect various types of failures, including transient failures, steady state failures, and trending failures. The diagnostic data collection device self-calibrates by recording electrical properties during normal operation of the HVAC equipment. A plurality of diagnostic data collection devices may be coupled by a diagnostic data bug independent of the HVAC system's control bus, to ensure operational integrity of the diagnostic system.

Method of operating a diagnostic data bus in an HVAC system

Systems and methods for self-learning fault detection and diagnosis in an HVAC system include a server identifying a fault and one or more predicted causes of the fault based on measurements of operational parameters received from sensors associated with the HVAC system. The operational parameters are compared to evaluation criteria, such as predetermined thresholds, to identify a potential fault. Parameters may be weighted, and optionally scaled to a standardized range to facilitate the diagnosis of HVAC systems of disparate configurations and capacities. Evaluation criteria for each fault are periodically analyzed in view of operational parameter history to identify new criteria having a lower probability of misdiagnosis. Fault detection criteria which are determined to have an unacceptable error rate may be deactivated or flagged for review.

Self-learning fault detection for HVAC systems

A diagnostic data collection device and a diagnostic data bus are disclosed. In an embodiment, the diagnostic data collection device includes a diagnostic communication interface and a flexible interface module. The interface module is configurable to measure one or more electrical properties associated with an HVAC component, such as voltage, current, resistance. Electrical properties may include a sensor output and may include analog and digital signals. The diagnostic data collection device generates an exception message if the sensed property is out of specification. Evaluation rules are provided to detect various types of failures, including transient failures, steady state failures, and trending failures. The diagnostic data collection device self-calibrates by recording electrical properties during normal operation of the HVAC equipment. A plurality of diagnostic data collection devices may be coupled by a diagnostic data bug independent of the HVAC system's control bus, to ensure operational integrity of the diagnostic system.

Diagnostic data bus for acquiring and communicating diagnostic information from HVAC systems

Systems and methods of operating a heating, ventilation, and/or air conditioning (HVAC) system are disclosed that may include starting a timer substantially concurrently with the HVAC system, entering a cooling cycle, and preventing a multi-speed blower in the HVAC system from changing speeds until the timer expires.

Latent capacity adjustment

An HVAC system has a plurality of humidity sensors and a controller configured to selectively control which of the plurality of humidity sensors affects operation of the HVAC system. A method of controlling humidity includes providing a plurality of humidity sensors, assigning one of the plurality of humidity sensors as a humidity priority sensor, and affecting a humidity in response to feedback from the humidity priority sensor. A system controller for an HVAC system has an interface configured to present a plurality of humidity sensors and the system controller is configured to allow a user to select which of the plurality of humidity sensors affects operation of the HVAC system.

Systems and methods for controlling humidity

A system and method is provided for monitoring a system pressure to infer whether a high pressure cut out (HPCO) switch has opened disabling a heating, ventilating, and air conditioning (HVAC) compressor. A system and method are also provided for determining whether to disable the HVAC compressor based on a status of a low pressure cut out (LPCO) switch, an ambient temperature, and system mode state. The systems and methods may be used interchangeably with the appropriate adjustments to decision limits, such as where the LPCO may be monitored to infer status and the HPCO status may be directly used with temperature and system mode state.

System and method of disabling an HVAC compressor based on a high pressure cut out

A user interface for a control system for an air conditioning apparatus includes a visual display and keys for scrolling menu items and entering commands to the control system. The interface is mounted in the apparatus cabinet and on a rotatable bracket to orient the interface for ease of reading the display and actuating the respective keys.

Control system interface with display for air conditioning apparatus

An air conditioning (HVAC) system for a residential dwelling or other building with enclosed spaces includes multiple thermostats hard wire interconnected or communicating via radio frequency transceivers. The thermostats each include control circuits for adjusting the setpoint temperature at any one thermostat and displaying the set temperature at all thermostats, setting the time at any one thermostat and displaying the time at all thermostats, controlling the thermostat temperature setting from a selected one of the thermostats and providing a setpoint for control of the air conditioning system based on an average temperature sensed by all of the thermostats. A method for correctly setting a thermostat time display to one of Daylight Saving Time or Standard Time and displaying an icon identifying one or the other is disclosed.

Multiple thermostats for air conditioning system with time setting feature

An HVAC system includes a variable speed electric motor driven fan for circulating air to an enclosed space through an indoor unit for providing heating or cooling effect to air circulated through the indoor unit. A controller with user or system installer actuatable switches includes a programmable microcontroller providing a pulse width modulated (PWM) signal to a motor control unit to select a predetermined air flowrate less than full air flowrate during system startup and shutdown. User input parameters include selected percentages of full air flowrate to satisfy requirements for reduced noise level, lower humidity and for improved sensible heating of air being circulated, the latter being effective particularly for heat pump applications. Selection of pre-run, short run and shutdown cycles may be provided.

System and method for controlling indoor air flow for heating, ventilating and air conditioning equipment

Growing community of inventors

Tyler, TX, United States of America

Carl L Garrett