US 12,130,038 B2
Recovery mode algorithm for two stage HVAC equipment
D Gamage Methmini U. M. Sumanasekara, Wichita, KS (US); Andrew M. Boyd, Wichita, KS (US); and Theresa N. Gillette, Wichita, KS (US)
Assigned to TYCO FIRE & SECURITY GMBH, Neuhausen am Rheinfall (CH)
Filed by Tyco Fire & Security GmbH, Neuhausen am Rheinfall (CH)
Filed on Apr. 24, 2023, as Appl. No. 18/138,615.
Application 18/138,615 is a continuation of application No. 17/382,142, filed on Jul. 21, 2021, granted, now 11,635,223.
Prior Publication US 2023/0408126 A1, Dec. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F24F 11/63 (2018.01); F24F 11/65 (2018.01); G05B 15/02 (2006.01)
CPC F24F 11/63 (2018.01) [F24F 11/65 (2018.01); G05B 15/02 (2013.01); G05B 2219/2614 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A controller configured to control operation of multi-stage heating, ventilation, and air conditioning (HVAC) equipment, wherein the controller comprises:
processing circuitry configured to receive a call for conditioning and, in response to the call for conditioning, execute a recovery mode algorithm to:
determine an average weighted percentage value based on a plurality of values, wherein each value of the plurality of values is associated with a corresponding previous cycle of a plurality of previous cycles of the multi-stage HVAC equipment; and
determine a stage up time of the multi-stage HVAC equipment based on the average weighted percentage value and based on an elapsed time between the call for conditioning and an ending of a recent cycle of the multi-stage HVAC equipment,
wherein the processing circuitry is further configured to:
initiate first stage operation of the multi-stage HVAC equipment; and
in response to lapse of the stage up time without the call for conditioning being satisfied, increase an operating stage of the multi-stage HVAC equipment.