Trane Baysens019c Manual [portable] [WORKING]

This is possible but requires careful reconfiguration. The BAYSENS019C uses terminals 7 through 14 for serial communication. However, the ReliaTel control board on the rooftop unit also includes standard R, W, Y, G terminals that are unused when a zone sensor is installed. Qualified technicians have successfully replaced the PZS with conventional 24 VAC thermostats by rewiring to these standard terminals. This is a simple drop‑in replacement—it requires understanding of the specific unit's control board and may necessitate additional interface hardware depending on the unit model.

The inside the unit (ReliaTel vs. legacy Microelectronic). trane baysens019c manual

| Terminal | Signal | Notes | |----------|--------|-------| | | HEAT status indicator | On = Heating Mode; Flashing = system failure in heating mode | | 8 | COOL status indicator | On = Cooling Mode; Flashing = system failure in cooling mode | | 9 | ON (System On) indicator | Colon flashing = System On; solid colon = System Off | | 10 | SERVICE indicator | On = Service required; Flashing = fan failure | | 11 | 24 VAC Common | Power supply and shield ground for remote sensor | | 12 | Data communication | Serial link to Unit Control Module | | 14 | 24 VAC Hot | Operating power | | S1 / S2 | Remote zone temperature sensor | For BAYSENS017B thermistor sensor | | Aux Relay (Form C) | Occupied period signal | 1.25 Amps at 30 VAC | This is possible but requires careful reconfiguration

is designed to help diagnose issues with your Trane system. If the unit does not operate correctly, look for these common indicators: legacy Microelectronic)