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This factory-authorized OEM limit control is vital for protecting the furnace heat exchanger from overheating conditions
This OEM replacement part is engineered to monitor furnace plenum temperatures
Universal F61 Compatibility: Specifically designed to fit the full range of Johnson Controls Penn F61 series standard flow switches
For veteran technicians
York S1-2985-3181 Limit Switch This factory-authorized OEM limit controlThe York S1 2985 3181 Limit Switch is a critical OEM safety component designed for high limit protection in residential and light commercial furnace applications. This 160 190F Auto Limit Switch features a primary safety circuit that opens when the internal plenum temperature reaches its 190F trip point, effectively de energizing the gas valve or heating elements to prevent heat exchanger damage or hazardous overheating. As an automatic reset limit