Description
and 1172619
Nitride Construction: Enhanced durability compared to standard ignitors
Debris Resistance: Designed so the float line remains consistently below the valve seal
the Carrier HH12ZB190 serves as a direct OEM replacement part for legacy components
Lennox 71G17 Vent Switch and 1172619The Lennox 71G17 Vent Switch is a critical safety component designed for precise thermal monitoring in high efficiency HVAC systems. Engineered as a 300F manual reset limit switch, this device serves as a primary defense against dangerous flue obstructions or heat exchanger failures. When vent temperatures reach the 300 degree Fahrenheit threshold, the internal circuit opens, instantly terminating the gas valve signal to prevent carbon monoxide