How to troubleshoot Trane Tracker Version 12 Air Conditioner Tracker controller not communicating by EIA-232 port?
- EEmily Ayers DDSSep 12, 2025
If the Tracker controller does not communicate via the EIA-232 port, verify that the cable is connected to the PC direct connect port. Ensure the correct cable is used and that the PC workstation uses Tracker controller software. Check for activity on the PC RX LED.







