Reznor 50418 Limit Switch Ensure your current part matches

Ensure your current part matches the 140-degree opening temperature and the 3

SPDT TempCntrl

soot accumulation on the tip

scaled heat exchanger

The manual reset prevents the unit from restarting until the heat levels subside and the button is depressed

Reznor 50418 Limit Switch Ensure your current part matchesThe Reznor 50418 Limit Switch is a critical OEM safety component engineered for Reznor HVAC equipment, specifically compatible with models like the UA100. This 125 145F auto limit switch functions as a high limit safety cut off, monitoring internal heat exchanger temperatures to prevent hazardous overheating. When the temperature exceeds the factory calibrated 145F threshold, the switch opens the electrical circuit to the gas valve, immediately