11 red flashes
Main blower failure (main limit opened and failed to reclose within 5 minutes)
This code typically points to
- Blower motor failure
- Blower wheel failure
Next checks to confirm
- Verify blower operates and moves air
- Inspect wheel and motor
- Verify power path
Escalation
Stronger blower-specific language than legacy boards.
Reset behavior
Hard lockout until blower repair.
Urgent
Fix now