Trane SEN0404 Sensor 318973-401 this unit requires a specific

this unit requires a specific microfarad (MFD) capacitor (typically specified on the nameplate) to ensure proper phase displacement and starting torque

This crankcase heater is required for any HVAC system operating in low ambient conditions or systems where the compressor is exposed to temperatures lower than the evaporator to prevent liquid refrigerant from settling in the oil

With a 690V rated operational voltage and multi-standard compliance including UL

eliminating modification requirements during installation

Trane SEN0404 Sensor 318973-401 this unit requires a specificThe Trane SEN0404 Sensor is an essential HVAC temperature sensor designed for precision monitoring in Trane rooftop units (RTU) and larger air handling systems. As a 10k ohm thermistor, it provides high accuracy resistive feedback to the main control board, ensuring tight tolerance monitoring within a 15F to 140F operating range. This sensor is specifically engineered for long run applications, featuring a 280 inch (24 foot) shielded cable that