Lochinvar & A.O. Smith 100233518 Sensor Freon The high-limit safety is fixed

The high-limit safety is fixed at 170°F and requires a manual reset

it prevents inefficient heat pump operation during extreme cold and ensures the secondary heat source engages only when necessary

Swapping coils between AC and DC often requires different internal solenoid base sub-assemblies due to magnetic flux differences

ensuring lead-free compliance and reliable pressure differentials

substituting it with a manual version may cause unnecessary system lockouts if the temperature fluctuations are within normal operating parameters

Lochinvar & A.O. Smith 100233518 Sensor Freon The high-limit safety is fixedThe Lochinvar & A. O. Smith 100233518 Sensor is a critical precision engineered component for hydronic monitoring, specifically designed as an Inlet Outlet Bypass Sensor. Functioning as a direct replacement for the Lochinvar TST2409, this 1 2" NPT temperature sensor provides real time thermal data to the control board, ensuring the system maintains a precise differential between the supply and return lines. In high efficiency condensing boilers and