Trane Tracer • High-Quality

| Symptom | Likely Cause | Fix | |---------|--------------|------| | Device offline in SC+ | BACnet comm loss | Check wiring, MS/TP termination, MAC/instance ID | | “No Device” in Tracer TU | Wrong comm adapter or baud | Use Trane Link (USB-Link-2), set 38400 or 76800 | | VAV stuck at 100% | Failed actuator or no occupancy | Force occupancy in SC+, check AI temp sensor | | SC+ web slow | Too many trends or firmware | Reduce trend intervals, upgrade to latest SC+ build | | Rover cannot connect | MP580 not in config mode | Cycle power + press service pin (Lon) |

| Layer | Components | Function | |--------|-------------|-----------| | | Sensors, actuators, VAV boxes, UC400, MP580 | Physical I/O | | Controller | SC+, SC, BCU (older), MP/VP series | Local logic & peer comms | | Supervisory | Tracer TU, Tracer ES, Tracer SC+ | Central control, scheduling, trending | | Enterprise | Tracer Summit (legacy), Tracer Ensemble (legacy), Trane Connect (cloud) | Remote access, analytics | trane tracer