I am new to this forum, so if my question has been answered elsewhere, please let me know.
This year, my Pentair Challenger starts give me problem: it requires me to prime everytime I start the pump. I had to open the strainer, fill the pot with water, close the lid and then the pump will prime almost immediately. If I turn it off, there are lot of air bubbles come up and then the water level goes down in the strainer below the suction line. If I dont manually prime, it will not work, even at one time I intended to let it run dry for 10 mins.
I did basic trouble shootings:
1- water level is above the skimmer
2- Strainer lid and O-ring are good
I am pretty sure the system worked fine last year, I only had to prime once when I opened the pool.
Thanks for you help,