Trane TCONT302AS42DA Thermostat 321142-301 making it an ideal choice

making it an ideal choice for 4-wire retrofits where pulling new thermostat wire is not feasible

then check for continuity across the terminals

though technicians should verify specific unit line sets before brazing

000V transformer instead of this 10

this specific model is designed for on/off or 3-point floating control

Trane TCONT302AS42DA Thermostat 321142-301 making it an ideal choiceThe Trane TCONT302AS42DA is a high performance multi stage touchscreen thermostat engineered for contractors requiring a reliable, 7 day programmable interface for complex HVAC configurations. This 4H 2H thermostat provides comprehensive control for systems up to 4 heating and 2 cooling stages, making it an ideal choice for heat pump, dual fuel, and conventional gas or electric applications. As the direct replacement for ACONT800AS11AA, it ensures a