Pentair VCF Pump does not turn impeller, then trips on "Priming Dry" (B70022)

[JoelsPoolHouston]

Help!! My pump is not running. What should I try next?

• I noticed that my pump was not running, and upon investigation, the pump shows the alarm "Priming Dry" (B70022).
• The pump is full of water. I am not sure what measurement makes it believe it is dry.
• [With the breaker shut off] I can reach in with my hand and turn the impeller....it turns fairly easily. I don't feel any debris or obstructions.
• When I try to start the pump, the motor sounds like a normal start (and the fan blows a bunch of air), but it does not turn the impeller (then alarms B70022 after a few seconds)....I have done it with the lid and basket removed, and am certain the impeller is not turning. Again, the pump is completely full of water.

Thanks,
Joel

 

[JamesW]

You're going to have to take it apart and check the impeller.

If the fan is spinning, the shaft is spinning and if the impeller is not spinning it is probably broken.

 

[JoelsPoolHouston]

Sure enough, the shaft was broken.....it is crazy how cleanly the break happened, the two ends almost look like machined surfaces. Replaced under warranty!

 

[JamesW]

Can you show a good clear picture of both ends of the shaft where it broke?

 

[JoelsPoolHouston]

That is the only photo I got (shaft coming out of the impeller). The other end looked about the same on the end.