Hello, I've tried searching but I can't find an answer to this. Bought a house with a pool and a polaris 280, the pressure relief valve went bad. I've replaced it with a brand new one, prior to the old one failing the unit worked just fine. Now with the new one in, screwed all the way in, the valve engages and my polaris doesn't move so well/at all. I've tried both the blue and the red restrictor plates. The red one has reduced the amount coming out of the relief valve. I've also cleaned the inline filter. I've checked the backup unit and it is fine, no clogs. I've taken the main unit apart and can't find any clogs. Also, I've only attached a small segment of line and the water shoots out the end, and the pressure relief valve does not engaged.
It would seem that something is possibly stuck in the line somewhere, but I don't know. Or possibly the relief valve is bad, just not sure which.
Any thoughts or am I doing something wrong?