Manual: Trane Baysens019c

If your building automation system is showing a fault code related to the return air sensor, the BaySens019C might be broken or the wire cut.

If you can’t immediately locate the BAYSENS019C manual, keep these quick tips in mind:

Note: Always refer to the latest official Trane documentation for safety, proper installation, and compliance with local electrical codes. trane baysens019c manual

The BaySens019C is generally a 2-wire device.

Pro Tip: If you are replacing an old sensor, take a photo of the wiring before disconnecting it. This saves time when cross-referencing the manual for the new installation. If your building automation system is showing a

The manual clearly outlines a straightforward mounting process. You install a small receiver inside the RTU (Rooftop Unit) control panel and mount the sensor unit on a wall inside the space. The catch: The manual strongly emphasizes a maximum range of 100 feet (30 meters) line-of-sight through one wood or drywall wall. It warns that metal ducts, concrete, or multiple walls will kill the signal. If you follow the manual’s placement guide, it works flawlessly.

The manual confirms this is a blind sensor (no temperature readout on the unit). If your occupants or tenants want to see the current temperature, they cannot. You must check the thermostat or BAS. For a sensor at this price point (~$150-200 street price), many competitors include a small display. Note: Always refer to the latest official Trane

If the display shows it is 85°F inside when it is actually 72°F, the sensor may be drifting.