Common Questions Is the Secop 117U4123 compatible with other brands

If the high-limit switch fails or stays open

preventing dielectric breakdown and arc-over in hot burner environments

the 621709R is built with high-grade laminations to minimize heat rise and vibration noise during high-demand cycles

Lennox 71G17 Vent Switch Common Questions Is the SecopThe 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