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To me it sounds like the float switch is stuck in the on position and the pump is overheating and shutting down. Almost all pumps require water to cool and lubricate the shaft seal. Some pumps can be damaged in as little as 30 seconds without proper water levels. So I would accuratelyactuate the float up and down (move the switch or wiggle it to see if it is stuck) this may free it up but if it keeps cycling on and off with no water it is probably overheating and the internal thermal overload is trying to keep the pump from melting down.

To me it sounds like the float switch is stuck in the on position and the pump is overheating and shutting down. Almost all pumps require water to cool and lubricate the shaft seal. Some pumps can be damaged in as little as 30 seconds without proper water levels. So I would accurately the float up and down this may free it up but if it keeps cycling on and off with no water it is probably overheating and the internal thermal overload is trying to keep the pump from melting down.

To me it sounds like the float switch is stuck in the on position and the pump is overheating and shutting down. Almost all pumps require water to cool and lubricate the shaft seal. Some pumps can be damaged in as little as 30 seconds without proper water levels. So I would actuate the float up and down (move the switch or wiggle it to see if it is stuck) this may free it up but if it keeps cycling on and off with no water it is probably overheating and the internal thermal overload is trying to keep the pump from melting down.

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source | link

To me it sounds like the float switch is stuck in the on position and the pump is overheating and shutting down. Almost all pumps require water to cool and lubricate the shaft seal. Some pumps can be damaged in as little as 30 seconds without proper water levels. So I would accurately the float up and down this may free it up but if it keeps cycling on and off with no water it is probably overheating and the internal thermal overload is trying to keep the pump from melting down.