Carrier® Comfort™ – 80% AFUE 90000 BTUH Multi-Speed Multipoise Non-Condensing Gas Furnace 22: Abnormal flame-proving signal
The furnace control is reporting an abnormal flame-proving signal.
Carrier® Comfort™ – 80% AFUE 90000 BTUH Multi-Speed Multipoise Non-Condensing Gas Furnace 23: Pressure switch did not open
The furnace control is reporting that the pressure switch did not open as expected.
Carrier® Comfort™ – 80% AFUE 90000 BTUH Multi-Speed Multipoise Non-Condensing Gas Furnace 24: Secondary voltage fuse is open
The furnace control is reporting that the secondary-voltage fuse is open.
Carrier® Comfort™ – 80% AFUE 90000 BTUH Multi-Speed Multipoise Non-Condensing Gas Furnace 31: Pressure switch did not close or reopened
The furnace control is reporting that the pressure switch did not close or reopened during operation.
Carrier® Comfort™ – 80% AFUE 90000 BTUH Multi-Speed Multipoise Non-Condensing Gas Furnace 33: Limit circuit fault
The furnace control is reporting a limit-circuit fault.
Carrier® Comfort™ – 80% AFUE 45000 BTUH Multi-Speed Multipoise Non-Condensing Gas Furnace 33: Limit circuit fault
The furnace control is reporting a limit-circuit fault.
Carrier® Comfort™ – 80% AFUE 45000 BTUH Multi-Speed Multipoise Non-Condensing Gas Furnace 34: Ignition proving failure
The furnace control is reporting an ignition-proving failure.
Carrier® Comfort™ – 80% AFUE 45000 BTUH Multi-Speed Multipoise Non-Condensing Gas Furnace 45: Control circuitry lockout
The furnace control is reporting a control-circuitry lockout condition.
Carrier® Comfort™ – 80% AFUE 90000 BTUH Multi-Speed Multipoise Non-Condensing Gas Furnace 11: No previous code
The Carrier furnace control is not reporting a stored previous fault code.
Carrier® Comfort™ – 80% AFUE 90000 BTUH Multi-Speed Multipoise Non-Condensing Gas Furnace 12: Blower on after power up
The blower is running after power-up as part of the furnace control status sequence.