Cleveland Controls DFS-221-112 Switch OEM Compatibility: Precision-engineered for exact

OEM Compatibility: Precision-engineered for exact fitment as a Rheem Protech replacement part

Why is my blower fan running constantly but the furnace isn't heating

The Cut-In (80 PSI) is the pressure at which the switch closes to allow the system to resume normal operation

Inherent Safety: Inherently limited design provides Class 2 protection against short circuits and overloads without additional circuit breakers

This unit utilizes a high-stability 10K Ohm Type III NTC Thermistor

Cleveland Controls DFS-221-112 Switch OEM Compatibility: Precision-engineered for exactThe Cleveland Controls DFS 221 112 Switch is a fixed setpoint air pressure sensing switch designed for critical airflow proving in duct heaters, ovens, and energy management systems. This SPDT airflow switch is factory calibrated to actuate on a pressure rise at 0. 05" WC ( 0. 02" WC), making it an ideal solution for applications requiring a non adjustable, tamper proof safety interlock. Built with a durable silicone diaphragm and a zinc plated steel