Avoid applying grease directly to the O-rings before they are seated in the U-cups to prevent displacement

Automatic Reset Functionality: Eliminates the need for manual resets after nuisance trips or temporary overheating events

While a technician might momentarily bypass for diagnostics

75-inch plated spring is compatible with natural gas

code-compliant installation

York S1-025-28670-003 Limit Switch Avoid applying grease directly toThe York S1 025 28670 003 Limit Switch is a critical safety component designed for precise thermal monitoring within York gas furnaces and residential air handlers. This automatic reset limit switch is engineered to operate within a specific 90 110F temperature range, ensuring the heat exchanger and plenum do not exceed safe operating parameters. When the sensed temperature hits the upper threshold, the internal bimetal disc opens the circuit to the