Pentair Whisperflo just quit......any advice?

Hi All,
I have a 3 month old Pentair Whisperflo 3/4HP pump that was working great up until this morning. I went out to turn the heater on and there was no water in the basket. I shut it off and the water that was in the basket was probably 110 degrees and the pump body was really hot. Water flow isn't blocked and it does pull water up that I put in the basket with the hose but it won't prime. Any advice?
Thanks,
Joe

Hmm, took the pump apart (separated motor from pump housing), everything appeared to be in order. I assembled it back together and now it works......what's up with that???

First thought would be when it got hot something opened up and it was sucking air and could not sustain prime. All it takes is a hairline crack or opening to let enough air in to mess things up. Other that that....who knows.
Al