Report Pump Runs, But Does Not Circulate Water Until I Turn The Blower On in Portable Hot Tubs & Spas Posted July 6, 2013 I guess it was hard to make out in the video, but the water level in the pump skimmer is full and remains full when the pump is off. I re-primed the pump and still the same problem, however I did check my jets and water is indeed coming out just not enough to really bubble the water like it used to. I do believe you're right that it is the blower check valve. The blower makes a "burping" sound when the pump is running which may be the bad valve? When I re-positioned the blower top it appeared the problem was fixed.