York S1-025-22273-001 Limit Switch 321702-401 Inspect the ceramic insulator for

Inspect the ceramic insulator for hairline cracks where high voltage might arc to the ground before reaching the tip

precisely modulating refrigerant flow into the evaporator coil to maintain a consistent 10-15°F superheat

the HT01BF208 is the standard 24V step-down transformer for many Bryant and Payne air handlers and furnaces that share the same internal platform specifications

this component allows technicians to perform a visual inspection of the refrigerant's state

York S1-025-22273-001 Limit Switch 321702-401 Inspect the ceramic insulator forThe York S1 025 22273 001 Limit Switch is a critical OEM safety component designed for precise thermal management within HVAC furnace systems. This SPST (Single Pole Single Throw) fixed temperature control operates on an auto reset logic, ensuring the burner circuit opens when temperatures reach the 150F trip point and automatically closes once the system cools to 110F. Engineered for York, Coleman, and Luxaire gas furnaces, this high limit switch