Hvac controller with performance log

Abstract

An HVAC controller is configured to log and record performance related data related to a performance of an HVAC system over a period of time in one or more performance logs stored in a memory of the HVAC controller. In some cases, the HVAC controller may be configured to retrieve at least some of the performance related data from the performance log that corresponds to a selected period of time that may be selected by a user, and display the retrieved performance related data on a display of the HVAC controller.

What is claimed is: 
     
         1 . An HVAC controller for use with an HVAC system including one or more HVAC components, the HVAC controller comprising:
 a user interface including a display;   a memory; and   a controller coupled to the user interface and the memory, the controller configured to store performance parameter data related to the performance of the HVAC system in a performance log in the memory of the HVAC controller over a period of time, the controller also configured to receive a first user request via the user interface, and in response to the first user request, retrieve at least some of the performance parameter data from the performance log that corresponds to a first selected subset of the period of time, and to display at least some of the retrieved performance parameter data on the display of the HVAC controller.   
     
     
         2 . The HVAC controller of  claim 1 , wherein the performance parameter data includes performance parameter data for one or more different performance parameters. 
     
     
         3 . The HVAC controller of  claim 2 , wherein the one or more different performance parameters includes one or more of an indoor temperature value. 
     
     
         4 . The HVAC controller of  claim 2 , wherein the one or more different performance parameters includes one or more of an outdoor temperature value. 
     
     
         5 . The HVAC controller of  claim 2 , wherein the one or more different performance parameters includes a discharge temperature value of the HVAC system. 
     
     
         6 . The HVAC controller of  claim 2 , wherein the one or more different performance parameters includes a delta T value of the HVAC system. 
     
     
         7 . The HVAC controller of  claim 2 , wherein the controller stores a minimum value and/or a maximum value over a specified period of time for each of one or more different performance parameters. 
     
     
         8 . The HVAC controller of  claim 1 , wherein the performance parameter data includes performance parameter data for one or more different performance parameters for each equipment stage of the HVAC system for a selected mode. 
     
     
         9 . The HVAC controller of  claim 1 , wherein the controller is configured to retrieve at least some of the performance parameter data from the performance log that corresponds to a first selected subset of the period of time for a selected equipment stage, and to display at least some of the retrieved performance parameter data for the selected equipment stage on the display of the HVAC controller. 
     
     
         10 . The HVAC controller of  claim 1 , wherein the controller is configured to receive a second user request via the user interface, and in response to the second user request, retrieve at least some of the performance parameter data from the performance log that corresponds to a second selected subset of the period of time and to display at least some of the retrieved performance parameter data that corresponds to the second selected subset of the period of time on the display of the HVAC controller, wherein the second selected subset of the period of time is longer than the first subset of the period of time. 
     
     
         11 . The HVAC controller of  claim 10 , wherein the second selected subset of the period of time overlaps the first selected subset of the period of time. 
     
     
         12 . The HVAC controller of  claim 11 , wherein the first selected subset of the period of time corresponds to an hour, and the second selected subset of the period of time corresponds to a day. 
     
     
         13 . The HVAC controller of  claim 10 , wherein the performance parameter data includes performance parameter data for one or more different performance parameters, and wherein:
 the controller is configured to display a minimum value and/or a maximum value for one or more of the one or more different performance parameters over the first selected subset of the period of time in response to the first user request; and   the controller is configured to display a minimum value and/or a maximum value for one or more of the one or more different performance parameters over the second selected subset of the period of time in response to the second user request.   
     
     
         14 . The HVAC controller of  claim 13 , wherein the first selected subset of the period of time corresponds to an hour, and the second selected subset of the period of time corresponds to a day. 
     
     
         15 . The HVAC controller of  claim 13 , wherein the first selected subset of the period of time and the second selected subset of the period of time are selected from a minute, an hour, a day, a week, a month and a year. 
     
     
         16 . The HVAC controller of  claim 10 , wherein the controller is further configured to:
 receive a third user request via the user interface, and in response to the third user request, retrieve at least some of the performance parameter data from the performance log that corresponds to a third selected subset of the period of time and to display at least some of the retrieved performance parameter data that corresponds to the third selected subset of the period of time on the display of the HVAC controller, wherein the third selected subset of the period of time is longer than the second subset of the period of time; and   receive a fourth user request via the user interface, and in response to the fourth user request, retrieve at least some of the performance parameter data from the performance log that corresponds to a fourth selected subset of the period of time and to display at least some of the retrieved performance parameter data that corresponds to the fourth selected subset of the period of time on the display of the HVAC controller, wherein the fourth selected subset of the period of time is longer than the third subset of the period of time.   
     
     
         17 . The HVAC controller of  claim 1 , wherein the controller is configured to receive a second user request via the user interface, and in response to the second user request, retrieve at least some of the performance parameter data from the performance log that corresponds to a second selected subset of the period of time and to display at least some of the retrieved performance parameter data that corresponds to the second selected subset of the period of time on the display of the HVAC controller, wherein the second selected subset of the period of time is shorter than the first subset of the period of time. 
     
     
         18 . The HVAC controller of  claim 2 , wherein the controller is configured to dynamically change the format of the display so as to not display labels for at least some performance parameters that do not include corresponding performance parameter data stored in the memory. 
     
     
         19 . The HVAC controller of  claim 2 , wherein the controller is configured to display an indicator indicating that performance parameter data for at least one of the performance parameters stored in the performance data log for the first selected subset of the period of time is not available. 
     
     
         20 . An HVAC controller for use with an HVAC system including one or more HVAC components, the HVAC controller comprising:
 a user interface including a display;   a memory; and   a controller coupled to the user interface and the memory, the controller configured to store performance parameter data related to the performance of the HVAC system in a performance log in the memory of the HVAC controller over a period of time, the controller configured to display performance parameter data retrieved from the performance log that corresponds to a first selected subset of the period of time on the display, the controller configured to receive a user interaction via the user interface, and in response, display on the display performance parameter data that corresponds to a second selected subset of the period of time, wherein the selected subset of the period of time immediately following the first selected subset of the period of time.   
     
     
         21 . The HVAC controller of  claim 20 , wherein the first selected subset of the period of time corresponds to a first hour, and the second selected subset of the period of time corresponds to a next succeeding hour. 
     
     
         22 . The HVAC controller of  claim 20 , wherein the first selected subset of the period of time corresponds to a first day, and the second selected subset of the period of time corresponds to a next succeeding day. 
     
     
         23 . The HVAC controller of  claim 20 , wherein the first selected subset of the period of time corresponds to a first week, and the second selected subset of the period of time corresponds to a next succeeding week. 
     
     
         24 . The HVAC controller of  claim 20 , wherein the first selected subset of the period of time corresponds to a first month, and the second selected subset of the period of time corresponds to a next succeeding month. 
     
     
         25 . The HVAC controller of  claim 20 , wherein the performance parameter data includes performance parameter data for one or more different performance parameters, and wherein the controller is configured to:
 display a minimum value and/or a maximum value for one or more different performance parameters over the first selected subset of the period of time, and   in response to the user interaction, display a minimum value and/or a maximum value for one or more different performance parameters over the second selected subset of the period of time.   
     
     
         26 . A method for monitoring an HVAC system, the HVAC system including one or more HVAC components that are controlled, at least in part, by an HVAC controller having a user interface including a display, a memory, and a controller, the method comprising:
 storing performance parameter data related to the performance of the HVAC system in a performance log in the memory of the HVAC controller over a period of time;   display a minimum value and/or a maximum value for one or more different performance parameters over a first selected subset of the period of time on the display of the HVAC controller; and   display a minimum value and/or a maximum value for the one or more different performance parameters over a second selected subset of the period of time on the display of the HVAC controller, wherein the selected subset of the period of time is longer than the first selected subset of the period of time.   
     
     
         27 . An HVAC controller for use with an HVAC system including one or more HVAC components, the HVAC controller comprising:
 a user interface including a display;   a memory;   an input/output block for sending and receiving one or more signals to and from the one or more HVAC components of the HVAC system; and   a controller coupled to the user interface, the memory, and the input/output block, the controller programmed to record data related to a performance of the HVAC system in a performance log stored in the controller memory, the controller programmed to display at least some performance information from the performance log on the display of the HVAC controller, the controller programmed to automatically change a format of the performance information that is displayed on the display based on a current set-up configuration of the HVAC system.