Trane CNT1170 Defrost Control 30067439-890 High Voltage Threshold: The 330V

High Voltage Threshold: The 330V AC rating offers robust electrical headroom to prevent dielectric breakdown during voltage spikes

making it the standard choice for powering 24V thermostats

Professional Grade Design: Features a high-grade dielectric film that reduces internal heat buildup

Durable Construction: Built to withstand the high-cycle demands of peak winter operation in A

As a critical replacement suction valve

Trane CNT1170 Defrost Control 30067439-890 High Voltage Threshold: The 330VThe Trane CNT1170 Defrost Control is a critical OEM replacement part designed for precision management of the defrost cycle in high efficiency heat pump systems. This SPST (Single Pole Single Throw) control utilizes a 70Op 37Cl calibration, specifically engineered to open at 70F and close at 37F. By accurately monitoring the evaporator coil temperature, the CNT1170 prevents excessive ice accumulation that can lead to reduced airflow and potential