T045_F
Inducer low-pressure switch won't close (transient protection event)
This code typically points to
- Low-pressure proving failure
Next checks to confirm
- Check inducer, pressure switch, tubing, and venting
- Detailed tree not exposed in booklet
Escalation
Can escalate to T047_F/A047_F inducer fan 5-minute lockout family
Reset behavior
Clears when proving succeeds; escalates to 5-minute lockout if repeated.
Urgent
Fix now