When a Building Automation System (BAS) comes back online after a power loss, physical verification of HVAC equipment operation is essential to:

Confirm system restart success – Some components may not fully reboot.

Check for mechanical failures – Power loss could trigger equipment malfunctions.

Avoid incorrect system readings – Remote monitoring may not reflect actual conditions.

Lowering temperature settings (Option A) is ineffective because it will not speed up cooling. Calling an onsite occupant (Option B) provides limited insight into the system’s condition. While installing a generator (Option D) is a long-term solution, it does not address the immediate issue​.