RoosterFXP

Well good news kinda... I removed the Comfort Select cartridge and I have massive air now! However, if I cover it with my hand it will suck it like a vacuum and bubbles stop. So... did my foam work creep into something and block it? It's the only logical conclusion I have at the moment. You can see my foam work was minimal at at the bottom... UGH Guess I will need to tear back into it. In a full foam spa I'm curious where it even has opportunity to pull air from.

RDspaguy appreciate the input. I maintain this spa very well but it is getting old. I'm familiar with all of it except for what's being the siding. I'm almost positive the little bit of foam I added didn't block anything... I gave it a good inspection and only filled a couple small voids that didn't penetrate very deep... was more to support the siding. I'm thinking there is water in the air line? My jets each draw air on their own by turning the outer ring. There is no master air valve. The only two air levers are for jets that do not have outer rings (the fire hose low in the back side and a seat with bunch of little holes. Thinking if there are check valves at each jet then maybe one let water backflow into the airline and there is not enough venturi vacuum to pull the water through? This is my guess with information I have. Considering trying to access an airline and sucking/draining it out. I would sure like to find a photo of one of these spas/jets with the foam removed. I glues my

Is there a plumbing diagram available for an older Hot Spring Prodigy? Model H Its not sucking air into the jets. A couple near the back do but its not powerful and inconsistent. I fixed a few lifting panels on the back side using some expanding foam and adhesive. I'm afraid I may have sealed something off. I don't think so though because I only filled a couple voids near the bottom. It worked fine when I used it last in March. In order to start trouble shooting this I need to know where it pulls its air from. Searched all over and cannot find anything helpful. Anyone have thoughts/experience with this? Or a plumbing diagram?