Always verify your specific model's parts list to ensure a match with the vertical configuration

maintaining stable performance across varying flow rates

more accurate readings in low-light environments

Always check for proper airflow before replacing the switch

Field Controls 01170006 Safety Switch 30067439-890 Always verify your specific model'sInstall the Field Controls 01170006 (Model FTS 6) to ensure reliable flue gas spillage detection on high capacity gas furnaces and boilers. This 180 degree manual reset thermal safety switch is engineered to de energize the burner circuit when it senses dangerous heat from blocked flues, downdrafts, or inadequate draft conditions. Operating as a normally closed switch, it provides critical protection for equipment rated over 400,000 BTU hr. The FTS 6