If the compressor won't start but you have 24V at the coil

This ambient air temperature sensor utilizes a high-precision NTC thermistor to provide real-time atmospheric data to the primary control board

and terminal blocks located in high-heat areas of the combustion chamber or heat exchanger area

prepackaged enclosed pilot relay designed to streamline Building Automation Systems (BAS) and HVAC/R control applications

this OEM assembly simplifies repairs by combining the starting relay and motor protector into a single 103N-style housing

Trane SWT2515 Pressure Switch Els PW 17895 If the compressor won't startThe Trane SWT2515 is a high precision HVAC pressure switch calibrated to a 1. 36" WC setpoint for critical safety monitoring in gas furnaces and air handlers. This SPST (Single Pole Single Throw) air pressure sensor acts as a primary safety interlock, ensuring the draft inducer motor generates sufficient negative pressure before the ignition sequence begins. Designed for maximum reliability in high cycle environments, the SWT2515 provides a 1 4" barb