I recently installed a 2 speed pump with the intentions of running my pool 24/7 on the low speed. Everything went well except my solar threw a wrench in the plan. Despite being told the pump would have enough boost on low speed to run my solar (by the salesman) it doesn't. If the pump is on low speed and there is air in the solar panels (due to the vacuum release valve opening) then it doesn't seem to have enough juice to clear the air and get things going (salt system says "No Flow"). If I kick the pump to high and then give it a minute and switch to low it seems to work. The problem seems to be with getting that air cleared. I don't quite understand the hydrology of this... the pump is pumping... but I'm not getting any flow from the jets. Where's the force being lost here? Is the air being compressed but then just expanding back on each pump stroke?
The obvious answer is run the pump high for a few mins to get things rolling but my solar is temperature controlled via temp sensors and a Goldline actuator on a panel. This panel has no feedback to the pump so it may choose to come open/close whenever it wants to. If the pump is in low then it's not going to work.
Short of replacing the pump with a variable speed with a bit more variance for low speed setting and/or getting a Suntouch/EasyTouch/etc, is there anything clever I can do? I have an Intermatic 1353 digital timer, but without some sort of info from that solar actuator I'm not sure how to get feedback to the pump to go high.