soakinNC

Thanks CST -- unfortunately, I have the "Sportub XS" with the separate circ pump that provides suction on the filter, unlike the (regular old? 😁) Sportub in the manual you provided, which does everything (jets and filter) with the jet pump. http://spaparts123.net/files/2008_Sport_Tub_XS_Owners_Manual.pdf

Hello -- this is my first post after searching on this topic. Bottom Line Up Front: I want to convert my continuous (24/7) circ pump to timer control. Background Older (12-15 yrs) Baja Sportub with circ pump providing suction on separate filter/heat loop (jet pump and jet plumbing separate from filter/heat loop). Everything is 240V -- service comes up thru deck to junction box inside spa cabinet, and then connects to control/heater pack with whip; pack provides power to jet pump, circ pump and ozonator. Circ pump (1/16 HP I think) operates continuosly (unswitched, no topside control), which is annoying (vibration/noise transmitted to house through deck). I'd prefer to run circ/filter mostly at night, and as needed during day to maintain temperature -- I'm considering a control like this: https://www.amazon.com/gp/product/B08VS7SRHN Potential Solutions Install timer between control/heater pack and circ pump (pack still powers circ pump). Disconnect circ pump from control/heater pack and splice to 240V service (with timer) at junction box inside spa cabinet. In either case, the control/heater pack would detect low flow ("FLO") and deactivate heater until flow is restored. Questions/Concerns Would installing timer on the control pack-circ pump circuit stress or otherwise damage the control pack electronics? Would more frequent cycling of the flow sensor (and operating in a "FLO" error state) cause any issues? Anybody tried this? Thanks for your thoughts!