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Carrier 58SC0B/58SC1B error codes

Every checked code for the Carrier 58SC0B/58SC1B 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
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
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
23.1 Flue or venting fault (depends on model) 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
25.3 Twinned furnaces are not identical 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
31.1 Flue or venting fault (depends on model) Depends on your model
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
34.2 Flame lost before the heating blower started Safe checks first, then a pro
34.3 Flame lost after the heating blower started Safe checks first, then 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
46.1 Momentary loss of power Call a pro

Models in this range