Direct OEM Fit: Simplifies the electrode replacement process with precise mounting dimensions for Fenwal-equipped systems

High Voltage Threshold: Rated for 440V

Common Contractor Questions: How to troubleshoot a pressure switch stuck open

Enhanced Conductivity: The 3/4" NPT short ceramic probe maintains a high-integrity electrical circuit to ensure the burner shuts down immediately if water levels drop below the safety limit

Environmentally Robust: Moisture-resistant construction allows for reliable performance in high-humidity plenum environments

Trane CNT2237 Defrost Controller R-410A Direct OEM Fit: Simplifies theThe 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