12.1
Blower on after power-up
This code typically points to
- Normal operation if unit is repowered during a heat call or blower-on-delay interval
Next checks to confirm
- Verify recent power interruption before treating as a defect
Escalation
None unless the blower stays abnormal beyond the normal purge interval.
Reset behavior
Normal 90-second blower run, then control resumes normal sequence.
Informational
No action needed