While light cleaning with an emery cloth can temporarily restore flame sense

If the circuit is open while the unit is cool

What is the set point for York S1-024-39714-000

F and cuts the fan "off" at 30

this component is designed for 50/60 Hz applications

Carrier HH19ZA195 Limit Switch While light cleaning with anThe Carrier HH19ZA195 Limit Switch is a critical safety component designed for precise thermal monitoring within Carrier residential furnaces and HVAC air handlers. This SPST (Single Pole Single Throw) manual reset furnace limit switch operates as a normally closed contact that opens when temperatures reach the 195 degree trip point and allows for manual closure once the system cools to 155 degrees. Engineered for high limit protection, the HH19ZA195