Home Fault Codes

Bryant Furnace Error Code 11: Meaning and Fix

Applies to: Bryant furnaces with a two-digit status code LED (checked against the Bryant 310AAV manual).

11
How 11 appears on a Bryant furnace display.

Also shown as: 1 short 1 long, 1 short, 1 long flashes

Reading the furnace display

A furnace reports faults on a small status LED on the control board, seen through the sight glass in the blower door, or on a two-digit display. Watch a full cycle of the pattern and count the flashes, including the pause between groups, before you decide what you saw. The code chart is on the label inside the blower door.

This page lists the fault codes this brand documents, with likely causes and a short repair path. The codes apply to model numbers such as 310AAV; check the label on your unit to confirm yours.

What causes 11

How to fix it

If you smell gas, leave the building and call your gas utility from outside; do not touch switches or the furnace. Switch the furnace power off before you open the blower door or touch the igniter or flame sensor, and call a licensed HVAC technician if you are not sure.

The code meaning comes from the manufacturer document listed under Sources. The causes and steps below are general troubleshooting guidance, not the manufacturer's service procedure.

  1. Nothing needs repair. Code 11 is not a fault.
  2. If the furnace is still not heating, check the thermostat setting and batteries.
  3. If a problem happened more than 72 hours ago or before a power loss, the board no longer remembers it. Watch the LED during the next heating cycle.
  4. Do not remove power or the blower door before recalling a code on red LED boards, because that can erase the code you want to read.
  5. Restore power and run a heating cycle. If the code returns, call a licensed HVAC technician and give them the code, the board label and the furnace model number.

Questions

What does 11 mean on a Bryant furnace?

Code 11 (1 short flash, 1 long flash) on a Bryant furnace means there is no previous status code stored. It is what the board shows when you recall the last code and there is none.

Can I reset the furnace myself?

The control can be reset by switching power off at the furnace switch or breaker for about 30 seconds, which clears some lockouts. If the same code returns, the fault is still present and the control will shut the furnace down again. Never bypass a safety switch to keep it running.

When should I call a technician?

Call a licensed HVAC technician for anything involving gas, the pressure switch, the limit or rollout switches, the igniter, the flame sensor or a control board replacement, or if the code keeps coming back after the simple checks.

Other brands with code 11

The same code can mean something different on another maker's appliance. Check the brand before you act.

Carrier furnaceNo previous fault code storedChamberlain garage door openerSafety sensor wire open or sensors not connectedCraftsman garage door openerSafety sensor wire open or sensors not connectedLiftMaster garage door openerSafety sensor wire open or sensors not connectedNoritz tankless water heaterIgnition failurePayne furnaceNo previous fault code storedRheem tankless water heaterGas shut-off valve not fully openRinnai tankless water heaterNo ignition

Other Bryant furnace codes

Continuous OffNo power to the control board (LED stays dark)Continuous OnNormal: control board has 24 volt power (LED steady on)Rapid FlashingLine voltage polarity reversed (LED flashing rapidly)12Blower on after power up13Limit circuit lockout14Ignition lockout

Sources

Part numbers are OEM references; confirm fit by your model number before ordering. Meanings compiled from manufacturer and parts-retailer documentation; see sources below. Unplug the appliance before opening it.

Applies to models including 310AAV.