York S1-025-32694-000 Limit Switch it may have internal resistance

it may have internal resistance or mechanical fatigue and requires replacement

This unit is built to handle the continuous duty requirements of powering thermostats

preventing pressure drift and downstream fluctuations

Reduced Service Callbacks: High-grade flame rectification rod ensures a consistent microamp signal to the integrated furnace control

If the vent is clear

York S1-025-32694-000 Limit Switch it may have internal resistanceThe York S1 025 32694 000 Limit Switch is a critical OEM replacement part designed for high temperature circuit interruption in residential and commercial HVAC systems. This fixed temperature limit control is engineered with a set point to open at 240F and close at 210F, providing essential thermal protection for the heat exchanger. When temperatures exceed the 240F thresholdoften caused by restricted airflow, a failing blower motor, or clogged