malfunction cause of issue Method of exclusion Automatic control state pump can not start 1, a sensor bad contact 2, the sensor installed on the bottom upside down 3, the motor or fuse is damaged 4, no liquid pool, the sensor does not work 1, restore the sensor good contact 2, the correct installation of the sensor 3, repair motor or fuse 4, check the pool liquid situation The pump can not stop automatically 1, a sensor has been damaged, resulting in malfunction 2, particles in the liquid jam sensor float, forcing it to malfunction 1, replace the damaged sensor 2, flush the sensor float to make it flexible Automatic and manual can not be converted 1, a button is damaged 1, replace the damaged button Manual pump can not be started 1, manual button is damaged 2, the motor or fuse is damaged 1, replace the damaged manual button 2, repair the motor or fuse Electric air control valve part malfunction cause of issue Method of exclusion 1, the connection pipe leaks, the pump can not form a vacuum, no suction liquid 2, the piston does not move 3, the piston action, but the pump does not absorb liquid 1, the control valve and the pump connection is not tight or the use of a long time, loose corrosion, resulting in leakage 2, power nowhere 3, electric control valve coil damage or damage to electrical components 4, closed pad wear 5, closed pad and piston stroke is too large 1, Add the sealing tape on the connecting thread so that it will not leak or replace the corroded connecting pipe 2, check the electric control valve power cord and motor power connection is good 3, replace the control valve coil or a component on the circuit board 4, replace the closed pad 5, adjust the closed pad and piston stroke Fault Problem Cause Remedy Automatic control state can not start the pump 1, a sensor bad contact 2, the sensor installed on the bottom upside down 3, the motor or fuse is damaged 4, no liquid pool, the sensor does not function 1, restore the sensor good contact 2, the correct installation of the sensor 3, repair motor or fuse 4, check the pool liquid pump can not automatically stop 1, a sensor has been damaged, resulting in malfunction 2, particles in the liquid jam sensor float, forcing it to malfunction 1, replace the damaged sensor 2, flush the sensor float to make it flexible automatic and manual can not be converted 1, a button is damaged 1, replace the damaged button manual state pump can not start 1, the manual button is damaged 2, the motor or fuse is damaged 1, replace the damaged manual button 2, repair the motor or fuse failure troubleshooting reasons 1, the connection pipe leaks, the pump can not form a vacuum, no suction 2, the piston does not move 3, the piston action, but the pump does not absorb liquid 1, the control valve and the pump connection is not tight or the use of a long time, loose corrosion, resulting in leakage 2, power nowhere 3, electric control valve coil damage or damage to electrical components 4, closed pad wear 5, closed pad and piston stroke is too large 1, in the connecting thread on the increase of sealing tape, so that no leakage or replacement of the corrosion of the connecting pipe 2, check the electric control valve power cord and motor power connection is good 3, replace the control valve coil or a component on the circuit board 4, replace the closed pad 5, adjust the closed pad and piston stroke