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this spring is specifically calibrated for the 325-3 frame size
Always cross-reference your specific model's high-altitude matrix
facilitating communication between the HVAC control board and major mechanical components like the compressor
providing an extra safety margin compared to 370V versions
York S1-025-26339-001 Limit Switch this spring is specifically calibratedThe York S1 025 26339 001 Limit Switch is a primary safety component engineered for precise thermal monitoring in residential and light commercial forced air systems. This 100 250F auto limit switch features an automatic reset mechanism, designed to break the 24V control circuit if the heat exchanger plenum exceeds the calibrated 250F threshold. As a critical furnace high limit sensor, it prevents thermal stress and potential heat exchanger cracks by
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