What does ZONE-02 mean?
CO₂ stays above the comfort / code limit while the space is occupied.
Why does it matter?
High CO₂ tracks with complaints, drowsiness and code non-compliance; it also means the ventilation system isn't delivering.
What should you do?
Check the outdoor-air damper minimum, the DCV setpoint, VAV minimums and the CO₂ sensor calibration.
This is a diagnostic rule: Energy Agent surfaces and ranks it as a comfort problem and claims no dollar savings for it, by design.
How Energy Agent prices a finding