The BAYSENS019C acts as a wall-mounted user interface that communicates directly with the unit controller (such as the Reliatel or Microelectronic Control board) on your HVAC equipment. It features a digital display, programmable scheduling, and manual override capabilities. Technical Specifications
Setpoints are too close together or the system is in a safety delay mode.
Press to move to the next slot (Leave) and repeat the steps.
Allows users to select between Heat, Cool, Auto, and Off . trane baysens019c manual
Cooling (45°F–98°F) and Heating (43°F–96°F). Installation Highlights
: Simplified communication wiring to the main HVAC unit. Installation and Wiring
The BAYSENS019C offers a comprehensive Options Menu that controls almost every aspect of its behavior. Below is a reference table of all 23 options: The BAYSENS019C acts as a wall-mounted user interface
Ensure the backplate is level; it is typically embossed with "TOP" to guide correct placement.
Replacing this unit with a standard retail or smart thermostat (like Honeywell) often requires a
Trane Voyager, Precedent, and various light commercial split systems equipped with compatible electronic unit controllers 2. Terminal Identification and Wiring Connections Press to move to the next slot (Leave) and repeat the steps
Use an external calibrated thermometer to ensure the sensor is reading the room temperature accurately. If the sensor deviates significantly, it may need to be replaced.
Use the to adjust the current hour and minute.
If all wiring and preliminary tests indicate no defects, disconnect the PZS from the wall and take it to the unit. Using a short (approx. two feet) length of thermostat wire, connect the sensor directly to the unit. If symptoms disappear, the problem is in the field wiring—check for thermostat wire routed too close to high‑voltage wires or fluorescent lights.