Aquacal heat pump water pressure switch

I have an aquacal heat pump 120AHDEWNB

S/N 1052685D05.  Circa 2004/2005. After a successful opening this year (complete with compressor start), the heat pump will not shut off (fan and compreasor) when the filter pump shuts off.  I believe this is a water pressure switch issue. Can you please confirm and recommend, which water pressure switch part #  i need for my aquacal model number.

Thank you

Good Afternoon John,

Hope you are doing well. The part number you need is the 0015S.

INYO Pools will be able to provide pricing & availability.

Thanks

Robert Brown

AquaCal Tech Support