Description
The York S1-024-35738-000 On/Off Furnace Door Switch is an element to cut electrical power when the furnace door is opened to avoid the system operating with internal parts open in the HVAC systems. It is a mechanical switch that completes its circuit when the door is taken off and completes its circuit when the door is properly installed and becomes part of the control circuit. This door switch better activation of fans or burners during service, and helps to control the work of residential and commercial HVAC equipment.
