Raypak 600893B Limit Switch The Reznor 146465 Limit Switch

The Reznor 146465 Limit Switch is a critical OEM replacement part engineered for precise thermal regulation in unit heaters and forced-air systems

blocked return air

this switch acts as the primary proof of airflow for the combustion process

The Johnson Controls AFS-222 Sensing Switch is the direct performance-grade update for legacy A/AFS222 and L-200-RH3 models

ensuring the logic circuits and safety strings remain energized for reliable equipment cycling

Raypak 600893B Limit Switch The Reznor 146465 Limit SwitchThe Raypak 600893B is a critical 140F CO Auto Limit Switch designed for high performance safety regulation in professional heating assemblies. This genuine OEM replacement part is engineered to monitor water temperatures within the heat exchanger, providing a fail safe against overheating. When the internal temperature reaches the 140F threshold, the high limit safety sensor breaks the electrical circuit to shut down the burners, preventing equipment