3
Draft Pressure Error
This code typically points to
- Venting problem
- Pressure switch problem
- Inducer problem
- Condensate blockage on condensing platforms
Next checks to confirm
- Use three-branch check: venting, pressure switch, inducer
- Also inspect condensate path on this condensing platform
Escalation
No start or shutdown during run
Reset behavior
Clears after fault correction; lockout reset with off-on-off-on within 30 sec if full lockout occurred.
Urgent
Fix now