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How to Troubleshoot a Trane VAV

Chris Waller

A variable air volume system is a special heating and air-conditioning system that measures the temperature and air pressure in multiple rooms in order to keep each room at the exact temperature you want. This system not only makes your spaces more comfortable but can also save you money because you will not be running the system just to heat or cool one room. If your Trane VAV system is not working properly, perform a few troubleshooting steps before calling a technician.

  1. Look at the display on your control panel if the system is not working properly. The display will show an error message that can help you quickly diagnose the problem and attempt to fix it. If you can't fix it and need to contact Trane, a representative will ask you for the display error message.

  2. Check the location and position of the senors in each zone of your home or office if you see the "Static Sensor Calibration Failure" error message. This means that the senors are in the incorrect position. These sensors should be installed in the wall between the supply and return ducts.

  3. Replace the discharge air temperature sensor if you see the error message "Discharge Air Temperature Sensor Failure." This means that this particular sensor has stopped working. You can order a new sensor from Trane or contact a technician to replace the part if you are not comfortable doing it yourself.

  4. Check the wiring of your sensors if you see the "Communication Failure" or "Zone Sensor Failure" errors on the control display screen. Along with the failure message, you will see a zone number telling you which zone's sensors are creating the problem. Make sure the sensor is wired correctly and that the wires are not frayed or worn. If the wires are damaged, replace the wires. If this still does not solve the issue, you may need to contact Trane.