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Carrier 58TN0B/58TN1B error codes

Every checked code for the Carrier 58TN0B/58TN1B range, with what it means and whether you can fix it yourself.

Error codes

Code Meaning What you can do
10.1 Line voltage polarity reversed Call a pro
10.2 Refrigerant leak detected, dissipation active Call a pro
13.1 Limit circuit lockout, a limit or rollout switch stayed open Safe checks first, then a pro
14.1 Ignition lockout after repeated failed lighting attempts Safe checks first, then a pro
14.2 Flame lost 3 times after 70 seconds of heating Safe checks first, then a pro
14.3 Lockout after 7 flame losses in one heat request Safe checks first, then a pro
15.1 Blower lockout, no blower speed signal Call a pro
15.2 Blower lockout, blower never reached 500 rpm Call a pro
17.1 Lost communication with the Bluetooth module Call a pro
21.1 24 volts sensed at the gas valve when there should be none Safe checks first, then a pro
22.1 Flame proved while the gas valve is off Safe checks first, then a pro
23.4 Low pressure switch stuck closed Call a pro
23.5 High pressure switch stuck closed Call a pro
24.1 Fuse fault, short in the 24-volt wiring Call a pro
25.1 Control has no program loaded Call a pro
25.2 Control program file is corrupted Call a pro
25.4 Main program invalid, running on the backup program Call a pro
25.5 Installer settings are corrupted Call a pro
25.6 Wrong program loaded for this control Call a pro
27.1 Program in super plug is missing or corrupted Call a pro
27.2 Program in super plug is missing or corrupted Call a pro
27.3 Program in super plug is missing or corrupted Call a pro
31.6 High pressure switch open Safe checks first, then a pro
31.7 High heat only, high switch failed to close in time Safe checks first, then a pro
32.2 Low pressure switch open Safe checks first, then a pro
33.1 Limit circuit switch open, blower running to cool the furnace Safe checks first, then a pro
34.1 Ignition fault, burners did not light in 4 trials Safe checks first, then a pro
34.5 Low heat flame lost before the blower started Safe checks first, then a pro
34.6 Low heat flame lost after the blower started Safe checks first, then a pro
34.7 High heat flame lost before the blower started Safe checks first, then a pro
34.8 High heat flame lost after the blower started Safe checks first, then a pro
41.1 No blower speed at start-up Call a pro
41.2 Blower speed lost while running Call a pro
41.3 Blower not reaching 500 rpm Call a pro
43.1 High switch closed before the low switch Call a pro
45.1 Internal control fault Call a pro
45.2 Gas valve relay will not close Call a pro
45.3 Control memory (EEPROM) fault Call a pro
45.4 Microprocessor communication lost Call a pro
51.1 Outdoor air sensor open Call a pro
51.2 Outdoor air sensor shorted Call a pro
52.1 Supply air sensor open Call a pro
52.2 Supply air sensor shorted Call a pro
53.1 Return air sensor open Call a pro
53.2 Return air sensor shorted Call a pro
btL Firmware failed to load Call a pro

Models in this range