Reznor 123976 Fan Control 30067439-890 allowing technicians to establish a

allowing technicians to establish a specific "deadband" or dual-actuation points for complex control circuits

4-pole configuration for flexible operational modes in 3-phase HVAC systems

making it applicable whenever the compressor is called to run

it acts as a permanent access port for gauge manifolds while providing a reliable shut-off mechanism for compressor isolation

High Temperature Resilience: Rated up to 400°F

Reznor 123976 Fan Control 30067439-890 allowing technicians to establish aThe Reznor 123976 Fan Control is a critical OEM replacement component engineered for precise thermal management in industrial and commercial heating applications. This F135 40F thermostatic switch is designed to regulate blower fan cycling by monitoring heat exchanger temperatures, ensuring the fan only operates within the 135F to 40F range. By maintaining these specific operational thresholds, the Reznor 123976 prevents the delivery of cold air