3
Draft Pressure Error
This code typically points to
- Venting problem
- Pressure switch problem
- Inducer problem
Next checks to confirm
- Use three-way branch: venting path, pressure switch, inducer
- Abnormal-condition text: if pressure not sensed, gas valve will not open; if failure during run, pressure switch causes shutdown
Escalation
Unit will not start or shuts down during run
Reset behavior
Clears when pressure fault corrected.
Urgent
Fix now