Error Code 11
Info

Bryant 355MAV Error Code 11: No Previous Code

TL;DR
Your Bryant 355MAV has no stored error codes. This means no faults have occurred recently and the furnace has been operating normally.
Disclaimer
This article is for informational purposes only and does not guarantee the accuracy or completeness of the information provided. Always turn off power and gas supply before attempting any repairs. If you smell gas, leave immediately and call your gas company. Consult a licensed HVAC technician for diagnosis and repair. Any actions taken based on this information are at your own risk.

What Does Code 11 Mean?

Status code 11 on the Bryant 355MAV means there are no previous error codes stored in the control board's memory. This is a clean status indicating that the furnace has not experienced any fault conditions within the retention period.

The Bryant 355MAV stores diagnostic codes in memory so that technicians can review recent fault history even after the furnace has resumed normal operation. These stored codes are automatically erased after 72 hours. Code 11 appears when a technician or homeowner accesses the stored code history and finds it empty — either no faults have occurred, or any previous codes were cleared by the 72-hour timer.

This is not a code that requires any action. If you accessed the code history because your furnace is having problems now, the current issue may not have generated a stored code yet, or the fault may be intermittent. Watch the LED during an active heating cycle to see if a fault code appears in real time rather than checking stored history.

Contact a licensed HVAC technician if any of these apply:

Sources

  1. Bryant 355MAV Series I Installation, Start-up, and Operating Instructions

✓ Verified against manufacturer service manual — March 2026