How do I know if this thermocouple has failed

the DMPR-KC053 is designed to withstand the cyclic loads and environmental conditions typical of heavy-duty air handlers and economizer sections

this tee provides superior flow characteristics and is NSF/ANSI 61 certified for lead-free applications

Universal Compatibility: Optimized for use with the Belimo KH8 universal crank arm and standard actuator hardware kits

making it efficient for multi-relay energy management configurations

York S1-025-29041-007 Limit Switch How do I know ifThe York S1 025 29041 007 Limit Switch is a critical safety component designed for precise thermal monitoring in HVAC furnaces and air handling units. Operating with a calibrated 140 170F temperature range, this auto reset limit switch is engineered to open the electrical circuit at 170F to prevent heat exchanger damage and automatically close once internal temperatures drop to 140F. As a genuine OEM replacement part for York, Coleman, and Luxaire