Carrier 59SC6A080M17–16 Error Codes

Updated October 13, 2026 · by Aurora Star Tech Inc.

Carrier 59SC6A080M17--16 error codes and diagnostic codes. The 59SC6A080M17--16 is a Carrier furnace in the 59SC6A series.

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Carrier 59SC6A080M17--16 error codes list

Code	Meaning	Severity
10.1	L1 polarity fault	High
12.1	W (heat call) on at power up	Low
13.1	Limit lockout - main limit open over 3 minutes	High
14.1	Ignition lockout after 4 tries	High
14.2	Lockout - flame lost 3 times after 70 s of heating	High
14.3	Lockout - 7 flame-loss events in one heat call	High
21.1	24 VAC on gas valve when it should be off	Critical
22.1	False flame	Critical
23.1	Main pressure switch stuck closed	Medium
23.2	Secondary pressure switch stuck closed	Medium
24.1	Fuse fault (24 V)	High
25.1	No program in control	High
25.2	Corrupted program file	High
25.3	Twinned furnaces not identical	Medium
25.4	Main program invalid, running on backup	Low
25.5	Installer settings corrupted	Low
25.6	Wrong program for this control	High
25.7	Non-condensing program in condensing furnace	High
27.1	Super plug program missing or corrupted	Medium
27.2	Super plug program missing or corrupted	Medium
27.3	Super plug program missing or corrupted	Medium
31.2	Secondary pressure switch (HPS) open	High
31.3	Secondary pressure switch lockout	High
32.1	Main pressure switch (LPS) open	High
33.1	Main limit circuit switch open	High
34.1	Ignition fault during ignition trials	High
34.2	Flame lost before blower on-delay	Medium
34.3	Flame lost after blower on-delay	High
45.1	Control failure - flame circuit / memory / sequence	High
45.2	Control failure - gas valve relay will not close	High
45.3	Control failure - EEPROM memory	High
46.1	Momentary loss of power	Low

Troubleshooting the 59SC6A080M17--16

Blowing cold air All brands · Furnace
No heat All brands · Furnace
Short cycling All brands · Furnace
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Furnace not responding to thermostat - Carrier 58SB0A/58SB1A Carrier · Furnace

Carrier 59SC6A080M17--16 specs and setup data

Minimum clearances to combustibles Carrier · Furnace · 59SC6A
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All Carrier Furnace error codes →

Homeowner help: Furnace Not Turning On: What to Check · Furnace Blinking Light: What the Flash Codes Mean

General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.

Carrier 59SC6A080M17--16 error codes list

Troubleshooting the 59SC6A080M17--16

Carrier 59SC6A080M17--16 specs and setup data

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