Utica-Dunkirk FE3980G050 Sensor 321042-401 Compatibility is determined by the

Compatibility is determined by the specific model and serial number of your HVAC equipment

verify the actual pressure produced by the blower matches the switch's rating

ensuring consistent airflow performance and motor cooling

Installing it vertically may lead to premature sleeve bearing wear due to improper oil distribution

or when operating in high-ambient environments where head pressures remain high during the off-cycle

Utica-Dunkirk FE3980G050 Sensor 321042-401 Compatibility is determined by theThe Utica Dunkirk FE3980G050 Temperature Sensor is a precision engineered OEM replacement part designed for critical monitoring within the heat exchanger and fluid cycles of high efficiency boilers. As a veteran grade NTC thermistor, this sensor provides the control board with real time resistance data to manage modulation and prevent high limit lockout conditions. This specific FE3980G050 sensor is a direct fit component for a range of ECR