So, long story short, I have a '03 TR Siberian. LOVE this spa. But it's been a pain in my ass lately. The circ pump get's air locked OFTEN. If both filters are in place it just wont stay pumping. To me, it just seems like a weak pump, but the local HS dealer told me that if the pump spins, that means it plenty good. And it does, the pump does spin, and pumps fine. For a while. One of the problems I think is that is a steady stream of bubbles coming into the pump from the supply line. I have NO idea where they are coming from, I would guess they are not supposed to be there. They are visible in the supply line entering the equipment compartment, so they are coming from somewhere beyond that.
The pump pumps just fine and then you can just watch the flow (Ie all the bubbles) just slow down and stop moving. If you turn off the circ pump, and wait 30 seconds, then turn it back on, it will fire up and run again for a while. It could be 20 seconds, or hours. You just never know.
I could really use some advice by folks that have been around more of these than I. Right now my plan is to put a flow meter into the line and insert the programming that would test for flow, and if flow = false then "reboot" the circ pump. But I would really like to figure out what's going on here. I donno, I'm just very frustrated here.
Any help would be great! Thanks a lot.
It's taken a LOT of work to get it to where it is. New heater, fixed a jet pump, built my own heater, had to build my own Arduino control system, built a mold to vacuum mold a new foot dome to fix a big hole melted in the bottom ETC.