Circuit board damage of electric hoist will lead to no movement up and down, no fast and slow lifting, no fast and slow walking motor of electric hoist, no movement of left and right walking of electric hoist.
Electric hoist up and down without action: open the walking motor electrical boxes, power plug, traveling motor is measured with a multimeter dynamic circuit boards for 380 volts, if there is no check walking motor circuit board wiring plug and lifting circuit board plug line if there is any break, sliding contact line between the collector have poor contact.
Electric hoist lifting without fast and slow speed: remote control socket plug loose or remote receiver to the lifting motor circuit board wire damage, replace the wire; Lifting motor collector electric shock damage or relay coil short circuit; Motor coil damaged.
Electric hoist traveling motor without fast and slow speed: remote control socket plug loose or remote receiver to travel motor circuit board cable damage, replace the cable; Traveling motor collector is damaged by electric shock or relay coil is broken; Walking motor carbon brush wear contact bad or motor rotor damage.
Electric hoist left and right walking without movement: open the electric motor electrical box, and use a multimeter to dynamically measure the power plug of the circuit board of the electric motor, whether it is 380 volts, if there is no check whether there is bad contact with the slide contact wire collector.