Description
The York S1-02531834000 Auxiliary Limit Switch is a control component used to monitor temperature conditions inside heating and air handling equipment, in HVAC systems. It is applied in furnaces, rooftop units and air handler to detect excessive temperature rise and interrupt the control circuit when preset limits are reached, preventing overheating of internal components. It is typically mounted near heat exchangers or airflow paths and operates as part of the protection circuit, communicating with the control board to manage shutdown or reset conditions. The switch ensure controlled operation of heating cycles in residential and commercial installations.
