This is for the PB4 pump. For about a week now, the pump turns off after running about 20 seconds. After a minute or so it starts up again but shuts down. Below is a list of things I read it could be and my comments;
Poor water flow, overheating [checked circulation, is fine]
Something obstructing the motor or impeller [impeller and pump turn, even tried it with the impeller off....it does sounds a little rough/abrasive, I took the impeller and housing off and checked everything]
Bad capacitor [not sure about this, if the pump starts its fine right? Polaris tech support mentioned the capacitor but I'm not sure]
FWIW, I can turn the shaft, not with my bare hands but with little effort using a wrench. The concrete block the pump is on is small and there's a lot of finer sand around, from the ground. My best guess is sand got inside the motor and is gunking things up. The finer sand is in the electrical connector area, I clean it with electrical cleaning spray, but no difference.
Not sure what to do, tempted to buy a replacement motor.