Description
Replacement flow switch for Hayward HydraHeat heat pumps (12 kW, 17 kW and 19 kW models) and Hayward S-Line heat pumps (18 kW and 20 kW models). Monitors water flow through the heat exchanger and signals the control board to prevent the unit from operating without adequate circulation. Replace when the switch triggers nuisance faults or fails to detect flow.
