Replace the relay if the compressor exhibits hard-starting symptoms or if the start capacitor shows signs of leaking or swelling

40" WC switch is calibrated for Size 4 units

offering 1/10th the weight and much higher efficiency

maintaining the evaporative efficiency required for consistent indoor air quality

Trane CNT7029 Board 328140-751 Replace the relay if theThe Trane CNT7029 is a critical EEV Board Assembly designed for precise refrigerant flow management in high efficiency HVAC systems. This Electronic Expansion Valve controller serves as the primary interface between the system sensors and the stepper motor, ensuring optimal superheat levels and compressor protection. Engineered specifically for Trane and American Standard units, the CNT7029 replaces legacy 16 pin and 20 pin control modules,