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Carrier Error Code 11: No previous code (Furnace)

Updated · by Aurora Star Tech Inc.

Carrier error code 11 on a furnace means: No previous code. It is also called Carrier diagnostic code 11.

Low severityFurnace59TP6A · 58SB0A/58SB1A

Homeowner? What Carrier code 11 means for you

Usually minor Your furnace is reporting: No previous code. This code is usually informational or minor. The safe checks below often clear it; call us if it keeps showing up.

Safe things you can check yourself

  • Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
  • Make sure the unit has power: its on/off switch (often looks like a light switch near the unit) is ON and the breaker in the electrical panel is not tripped.
  • Make sure the furnace front door or panel is closed properly; many furnaces will not run with the door switch open.
  • Look at the air filter. If it is grey and clogged, replace it; a blocked filter causes many shutdowns.
  • Outside, make sure the intake and exhaust pipes or vent cap are not blocked by snow, ice, leaves or a nest.
  • Check that the gas valve next to the furnace is open (handle in line with the pipe). Do not force it.
  • Try one reset: turn the power off for 30 seconds, then back on. If the code comes back, stop resetting and call a technician.

Call (647) 657-2977Book a service call

Licensed technicians serving Vaughan, Toronto and the GTA.

What does Carrier error code 11 mean?

Shown at the end of the stored code history (1 short, 1 long flash). Codes are erased after 72 hours or manually.

Applies to: 59TP6A two-stage variable-speed ECM multipoise condensing gas furnace, all sizes (040-10 to 120-22)

Common causes of Carrier code 11

  • No stored faults / end of history list
Safety: Gas, electrical and refrigerant work must be done by a licensed technician. Turn off power and gas before servicing, never bypass a safety control, and always follow the manufacturer's manual for your exact model.

Carrier models that use code 11

Show all 22 models

58SB0A045E14--1258SB0A045E17--1258SB0A070E14--1258SB0A070E17--1258SB0A070E17--1658SB0A070E21--1658SB0A090E17--1458SB0A090E21--1658SB0A090E21--2058SB0A090E24--2058SB0A110E21--2058SB0A110E24--2058SB0A135E24--2058SB0A155E24--2059TP6A040-1059TP6A040-1259TP6A060-1259TP6A060-1459TP6A080-1659TP6A080-2059TP6A100-2059TP6A120-22

Other Carrier Furnace codes

CodeMeaning
10.1L1 polarity fault
12Blower on after power-up (normal)
12.1W (heat call) on at power up
13Limit circuit lockout
13.1Limit lockout - main limit open over 3 minutes
14Ignition lockout
14.1Ignition lockout after 4 tries
14.2Lockout - flame lost 3 times after 70 s of heating
14.3Lockout - 7 flame-loss events in one heat call
15Blower motor lockout
21Gas heating lockout
21.124 VAC on gas valve when it should be off

All Carrier Furnace error codes →

Carrier code 11: homeowner questions

What does Carrier code 11 mean?

No previous code. Shown at the end of the stored code history (1 short, 1 long flash). Codes are erased after 72 hours or manually.

Is it safe to keep using my furnace with code 11?

Usually yes. Code 11 is normally minor, but if it keeps coming back have it checked.

Can I reset Carrier code 11 myself?

You can try one reset (power off for 30 seconds, then on). If Carrier code 11 comes back, the cause is still there and a licensed technician should check it.

Who can fix Carrier code 11 near me?

Aurora Star Tech Inc. repairs Carrier furnaces in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.

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

Troubleshooting guides

Source: Carrier 59TP6A Installation, Start-up, Operating and Service Instructions, Fig. 66 Troubleshooting Guide, p.88; p.77. Written in our own words as a summary; always check the original manual.

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.

Emergency Furnace Repair

647-657-2977