Possible causes and solutions to most common problems found in pump installation and operations.
Pump fails to start:

Power Failure

Check power connection

Voltage drop:

Correct the voltage rating or use extension cable that meets the standard

Blown fuse:

Check the circuit and replace fuse

Open circuit or faulty electrical connection

Correct wiring connection:

Impeller is caught by foreign substance

Inspect the pump and remove foreign substance

Motor burn out:

Replace a new motor

Pump stops during operation:

The protector is actuated

Inspect the pump and remove foreign substance

Check water level

Lower the water temperature if it is too high

Motor is burnt:

Replace a new motor

Poor performance:

High delivery head

Lower the head

Impeller jammed:

Remove foreign objects, and clean impeller and casing

Discharge hose is clogged:

Remove foreign substance, keep the hose straight.

Strainer is clogged:

Remove foreign substanceImpeller worn out

Replace impellerExcessive operating noise:

The bearing of the motor may be damaged or the impeller is damaged

Repair or replace