York S1-025-32700-000 Limit Switch 318423-701 which is field-adjustable to match

which is field-adjustable to match your specific site static pressure up to a maximum of 80 psi

it may fit other 8-inch diameter clean-out ports

making it a standard choice for contractors servicing high-output boilers and heaters

always verify the BTU rating and specific discharge capacity

If the furnace ignites but shuts off within 3 to 5 seconds

York S1-025-32700-000 Limit Switch 318423-701 which is field-adjustable to matchThe York S1 025 32700 000 Limit Switch is a critical OEM safety component designed for high limit temperature monitoring in residential and commercial furnaces and air handlers. This auto reset limit switch features a precision calibrated 185 155F temperature range, engineered to interrupt the electrical circuit if the heat exchanger exceeds the safe operating threshold of 185F. Once the system cools to 155F, the switch automatically resets, allowing