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1- Thermo overload

2- Pumping against too high a head (static pressure) cause by excessive piping or a partial stoppage or undersized piping or to many restrictions such as short radius ells or a bad check valve

3- float not properly set

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9y ago
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14y ago

It's probably in need of maintenance or replacement.

If it's kicking the breaker, there's probably water inside the motor or a short in it.

If it runs for a bit then shuts off, it's probably low on oil inside the motor due to a damaged seal. Some pumps have motors that are thermally protected from overheating. Low oil is causing the motor to overheat and shut off. You'll be able to tell if this is the case if the motor suddenly turns itself back on after a bit. That's the thermal protector resetting itself inside the motor. It will run until it overheats again and shuts off once more. The overheating can also be caused by clogging or debris stuck in the impeller causing the motor to work harder and overheat.

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14y ago

1- Unplugged 2- Impeller blocked 3- On thermo over load 4- stoppage down stream 5- check valve hung up 6- pump burned out

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Q: Why does Sump pump not work?
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