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making it the current standard for many wall-mount HVAC applications
This gasket should be replaced whenever the pilot assembly is removed or if you notice cracking or carbon buildup around the pilot tube entry point into the combustion chamber
this specific part is optimized for the mounting brackets and wiring harnesses found in York
Use a multimeter set to ohms/continuity
York 3400-3151 Limit Switch making it the current standardThe York S1 3400 3151 Limit Switch is a critical safety component designed for high limit thermal protection in residential and commercial HVAC systems. This OEM replacement part is engineered to monitor furnace plenum temperatures, specifically calibrated with an open point of 175F and a close point of 125F. As an automatic reset limit switch, it eliminates the need for manual intervention once temperatures return to safe operating parameters.
