公开(公告)号：US12072110B2

公开(公告)日：2024-08-27

申请号：US18151593

申请日：2023-01-09

Applicant: Copeland Comfort Control LP

Inventor： John F. Broker ,  Lily Wan ,  Bradley C. Zikes

IPC: F24F11/38 ,  F24F11/49 ,  G05B15/02 ,  G05B19/048 ,  F24D19/10

CPC classification number: F24F11/38 ,  F24F11/49 ,  G05B15/02 ,  G05B19/048 ,  F23N2225/04 ,  F24D19/1084 ,  F24D2220/046 ,  G05B2219/24015 ,  G05B2219/2614 ,  G05B2219/2642

Abstract: A method of controlling a gas furnace system includes controlling a motor of a draft inducer to increase a speed of the motor in response to a call for heat, receiving pressure signals output by a pressure transducer, receiving signals indicating whether a pressure switch is in a first state or a second state, and determining a first status of the pressure transducer as reliable, unreliable, or questionable at a first time based on the received pressure signals from the pressure transducer, the signals indicating whether the pressure switch is in the first state or the second state, and a first status of the motor of the draft inducer at the first time. Operation of the motor of the draft inducer is stopped when the first status of the pressure transducer indicates that the pressure transducer is unreliable.