Ensure the mode is set explicitly to Heat or Cool , rather than just Off or Fan On . If the problem persists, check the rooftop unit diagnostic LEDs for fault codes (such as high-pressure lockouts or flame failures). Share public link
Supports 7-day schedules with 2, 3, or 4 periods for "Occupied" or "Unoccupied" settings.
Repeat for other days of the week, or copy the schedule across days if your specific firmware revision supports it.
Proper installation ensures accurate temperature sensing and prevents communication errors between the sensor and the rooftop unit. trane baysens019c manual
: Unlike basic residential thermostats, this sensor allows for unique schedules for each day of the week. Programming Modes
: Users can select from four system modes— Heat , Cool , Auto , and Off .
If all wiring and preliminary tests show no defects, disconnect the PZS from the wall and continue troubleshooting the unit itself. Ensure the mode is set explicitly to Heat
: You can temporarily bypass a programmed schedule by using the up/down temperature keys. The override typically lasts for a minimum of 2 hours before reverting to the schedule. Digital Display
If you want, I can help you find a to diagnose and repair the issue. BAYSENS119 IOM and Install Information
The screen will change to display configuration codes (e.g., 01 , 02 ). Use the to change the value of the setting. Repeat for other days of the week, or
The BAYSENS019C typically connects to the HVAC unit using a standard low-voltage multi-conductor cable. While exact terminal designations can vary slightly depending on your specific rooftop unit's board (e.g., ReliaTel), standard connections generally follow a digital communication or dedicated terminal protocol.
The is not a standard thermostat; it is a digital wall sensor that communicates directly with Trane ReliaTel™, UCP, and IntelliPak™ commercial rooftop systems (models include 3–25 ton packaged heat/cool units, 3–20 ton heat pumps, and 27.5–50 ton rooftops). It provides precise temperature control, occupancy scheduling, and diagnostic feedback for constant volume (CV) and heat pump (HP) HVAC equipment in commercial buildings. This guide covers everything from installation and wiring to programming and advanced troubleshooting.
| | Function | |---------|---------------| | MODE | Cycle through Heat, Cool, Auto, Off | | FAN | Toggle fan between On and Auto (if allowed by Option 10) | | UP/DOWN | Enter Temporary Override and adjust setpoints | | HOLD TEMP | Enter Temporary Override menu | | ERASE | Cancel override, reset check‑filter indicator, or silence a warning buzzer | | TIME +/– | Adjust clock | | DAY | Change day of week |
If the sensor is acting up, you can try to power cycle it by disconnecting the wires at the HVAC unit's Low Voltage Terminal Block (LTB) for 30 seconds. For digital issues, a system reboot at the HVAC unit might be necessary.
The inside the unit (ReliaTel or electro-mechanical).