Durable Construction: Features TEAO (Totally Enclosed Air Over) enclosure to protect internal windings from moisture and debris in harsh outdoor environments

This assembly is specifically designed for the units listed in the York technical literature that utilize the 373-39596-001 or 373-27820-201 part numbers

or the furnace short cycling—shutting down shortly after ignition before reaching the thermostat setpoint

For specific chemical compatibility with the brass body and Buna-N O-ring

Always verify your specific ICP model number and serial number to confirm the exact primary or secondary heat exchanger requirements

Cleveland Controls NS2-1239-00 Pressure Switch L99H008 Durable Construction: Features TEAO (TotallyThe Cleveland Controls NS2 1239 00 is an industrial grade air flow pressure sensing switch specifically designed to monitor positive, negative, or differential air pressure in HVAC systems. This fixed set point pressure switch is factory calibrated at . 70" w. c. (inches water column), ensuring high accuracy for critical safety applications such as proving fan flow or detecting filter blockage. Built with a glass filled polycarbonate housing and a