Bryant 315AAV Error Code 11: No Previous Code
What Does Code 11 Mean?
When you retrieve the status history on the Bryant 315AAV Variable Speed Furnace Control and it reports code 11, the board is telling you there are no stored status codes to review. Either the furnace has been running without faults, or any earlier codes have already aged out of memory.
This control automatically erases stored status codes after 72 hours (or as otherwise specified for particular codes). So a code 11 can also mean an old event simply expired — for example, an intermittent limit trip (code 33) or an ignition retry (code 34) that happened more than three days ago and left no lasting record.
Because code 11 is a 'clean history' result, it is most useful as a baseline. If you are chasing an intermittent complaint and the board shows 11, it means nothing has faulted within the memory window, and you may need to run the furnace until the symptom returns and then re-read the code.
What You'll Notice
- Reading the stored status history returns code 11 with no other codes listed
- The furnace is otherwise operating normally, or any past code has aged out after 72 hours
How This Is Diagnosed
Code 11 is read intentionally when a technician or homeowner queries the control's stored history at the sight glass. Seeing it confirms the memory holds no active fault; if an intermittent problem is suspected, the next step is to run the furnace, reproduce the symptom, and re-read the code rather than treat code 11 as an error to fix.
- The furnace misbehaves intermittently but keeps reporting code 11 because the earlier event aged out of memory
- You want a technician to observe the furnace live during a fault, since no historical code was stored to diagnose from
Frequently Asked Questions
Is code 11 on my Bryant 315AAV a problem?
No. Code 11 means 'no previous code' — the control has no stored fault. It is a normal, informational result.
Why did my earlier error code disappear and now it shows 11?
The control automatically erases stored status codes after about 72 hours. If a fault happened more than three days ago, the history clears and reads code 11.
Sources
✓ Verified against manufacturer service manual — March 2026