My PCV2250 worked the first time I used it this spring. I used it again a few weeks ago and it wouldn't go into high pressure mode. Even when it was working normally it would shift in and out of the high pressure mode but now it won't do high pressure at all. The engine is running fine and the inlet water pressure and volume are good. The inlet filter is clear and there are no obstructions in the nozzle.

Appreciate your help on this!