Carrier 700177-10 Flow Switch 319847-401 Always power down the unit

Always power down the unit before servicing

Universal Replacement: Fully interchangeable with the 204480/U

Does the valve ship in the open or closed position

this treatment stays active in the refrigeration oil to provide ongoing preventative maintenance against future acid buildup

Reusing old gaskets often leads to micro-leaks that can compromise combustion efficiency

Carrier 700177-10 Flow Switch 319847-401 Always power down the unitThe Carrier 700177 10 Flow Switch is a critical safety component designed for precise HVAC water flow monitoring in commercial and industrial hydronic systems. This high reliability overflow switch functions by detecting fluid movement or stagnant conditions within the piping, providing essential HVAC system protection against low flow scenarios that can lead to heat exchanger fouling or compressor slugging. Engineered as a direct replacement part,