11 red flashes
Limit circuit remained open more than 5 minutes (main blower failure indicator)
This code typically points to
- Failed blower motor or blower wheel
- Major airflow issue
Next checks to confirm
- Verify blower actually runs and moves air
- Verify wheel and capacitor/ECM behavior
- Verify limit re-close timing
Escalation
Strong blower failure indicator on this family.
Reset behavior
Hard lockout; power cycle required after correction.
Urgent
Fix now