Trane SEN1521 Zone Sensor 322838-752 Ensure the existing run capacitor

Ensure the existing run capacitor is tested or replaced with a 45 MFD @ 370/440 VAC unit

including KeepRite

ensuring precise regulation for systems utilizing R-12

a resistance check across the coil terminals can confirm if the 24V gas valve has failed

Trane SEN1521 Zone Sensor 322838-752 Ensure the existing run capacitorThe Trane SEN1521 Zone Sensor is a critical component for commercial HVAC monitoring and precise environmental control. Designed to interface directly with Trane ReliaTel and Symbio 700 controllers, this discrete temperature sensor provides high accuracy ambient readings to ensure your HVAC zoning system operates at peak efficiency. It utilizes a 10k ohm thermistor for reliable temperature feedback, transmitting data via simple low voltage wiring.