US 12,066,203 B1
Systems and methods for diagnosing a loss of capacity of a climate control system
Christopher Blake Smith, Whitehouse, TX (US); Evan Brunner, Tyler, TX (US); and Jonathan Edward Thrift, Jacksonville, TX (US)
Assigned to Trane International Inc., Davidson, NC (US)
Filed by Trane International Inc., Davidson, NC (US)
Filed on Jul. 25, 2023, as Appl. No. 18/358,457.
Application 18/358,457 is a continuation of application No. 17/216,197, filed on Mar. 29, 2021, granted, now 11,754,303.
Claims priority of provisional application 63/003,036, filed on Mar. 31, 2020.
This patent is subject to a terminal disclaimer.
Int. Cl. F24F 11/38 (2018.01); F24F 11/526 (2018.01); F24F 110/12 (2018.01)
CPC F24F 11/38 (2018.01) [F24F 11/526 (2018.01); F24F 2110/12 (2018.01)] 20 Claims
OG exemplary drawing
 
1. A method of diagnosing a loss of capacity of a climate control system, the method comprising:
monitoring a runtime of the climate control system;
summing the runtime of the climate control system over a plurality of time blocks;
summing an expected runtime of the climate control system over the plurality of time blocks;
excluding a duration of time from the runtime and the expected runtime to determine an adjusted runtime sum and an adjusted expected runtime sum, the duration of time excluded being determined, in part, by using the following relationship:

OG Complex Work Unit Math
where SPnew comprises a new temperature setpoint, IDT comprises a current temperature of an indoor space, and Csp comprises a constant factor;
comparing the adjusted runtime sum with the adjusted expected runtime sum; and
issuing an alert indicative of a loss of capacity to a user of the climate control system in response to the adjusted runtime sum being greater than the adjusted expected runtime sum.