Description
The International Comfort Products 1171905 Limit Switch L140-55F is a safety control part used to monitor temperature conditions inside heating equipment and shut down operation when unsafe limits are reached in HVAC systems. It is a factory-calibrated, automatic reset limit switch used to open the control circuit at a fixed temperature threshold to protect the furnace. It is installed in International Comfort Products furnaces and air-conditioning air handlers, where it is mounted on the heat exchanger or supply air path to detect excessive heat. It controls the board when the temperature exceeds safe operating levels, thereby preventing equipment operation.
