Vent Pressure Switch for Indoor

The Hayward FDXLBVS1930 pool heater vacuum switch replacement kit may be the solution when select Hayward pool heaters stop working and display the "AO" error code, which typically indicates an issue with the blower vacuum switch. Details: Genuine OEM Hayward part Hayward P/N FDXLBVS1930 Kit includes: 1 x Vacuum switch 1 x NS2 Conversion kit P/N 60716 (2 x screws, 1 x metal bracket) Fits these Hayward H-Series above ground heater models: H135ID1 H135ID1P Fits these Hayward Universal H-Series Low NOx heater models: H150FDN H150FDP H200FDN H200FDP H250FDN H250FDP H300FDN H300FDP H350FDN H350FDP H400FDN H400FDP H500FDN H500FDP