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MSS SP-104
it ensures full compatibility with specific furnace series
Replacing a drifted or fouled switch with this OEM-spec part ensures the furnace operates within its designated safety parameters and maintains system reliable uptime
OEM Compatibility: Designed as a direct replacement for York S1-025-26392-010
Carrier HH12ZB220 Limit Switch MSS SP-104The Carrier HH12ZB220 Limit Switch is a critical safety component designed for high limit protection in residential furnaces, packaged units, and air handlers. Engineered as a normally closed (NC) switch, this part initiates a system cutout when the 220F open temperature is reached, effectively preventing heat exchanger damage and hazardous operating conditions. Once the plenum cools to the 180F close temperature, the bimetal disc automatically