Trane CNT2237 Defrost Controller Refrigerant Corrosion Resistant Construction: The stainless

Corrosion Resistant Construction: The stainless steel diaphragm and capillary tube are engineered for longevity in high-moisture industrial environments

Using it with other refrigerants will lead to incorrect superheat and potential system failure

using it with higher-pressure refrigerants like R-410A will result in incorrect trip points and potential system damage

UL Recognized Assemblies: Every hose in this set is UL recognized (File SA9737)

ensuring the unit remains within the manufacturer's specified temperature rise

Trane CNT2237 Defrost Controller Refrigerant Corrosion Resistant Construction: The stainlessThe Trane CNT2237 Defrost Controller is a high precision OEM electronic board engineered for demand based defrost management in specialized Trane heat pump systems. As a veteran grade HVAC replacement part, this 24V AC controller replaces legacy boards by utilizing advanced adaptive control logic to monitor evaporator coil temperatures. Unlike standard time and temperature units, the CNT2237 uses localized sensor data to initiate the defrost cycle