Common malfunctions
1. No water ingress. Check whether the filter screen of the inlet valve is blocked, and is the inlet valve damaged? After confirming that the two are good, use a multimeter to measure the voltage of 220V at both ends of the solenoid valve, which proves that the fault lies in the solenoid valve itself. Use electric barrier to measure the resistance of solenoid valve coil. The normal value should be 4.5~5.1kΩ. The measured resistance value is infinite, indicating that the solenoid water inlet valve coil is burned out. Replace the water inlet valve and troubleshoot.
2. The pulsator does not change direction when washing. When the washing machine is washing in the reverse direction, the underwear in the tub can only rotate in one direction. There is no step indicator for the program control on the panel, and no stepping and jumping of the electrical contacts in the device can be heard. The ticking sound. Check the micromotor, and the DC internal resistance measured with a multimeter in the R×1k block is about 20kΩ and 24kΩ, indicating that the winding of the micromotor is not damaged. Then use two fingers to pinch the pinion clockwise, the pinion does not rotate smoothly. The inspection found that the permanent magnet rotor of the micro motor was broken in 2 pieces. The cracks were glued firmly with all-purpose glue, and the fault was eliminated.
3. The pulsator does not rotate during washing. Water can automatically enter after the machine is turned on, indicating that the washing machine is working. The water can be stopped after reaching the predetermined water level, indicating that the water level detection switch is normal. Turn the pulsator clockwise and counterclockwise by hand. The pulsator cannot rotate. After disassembly and inspection, it is found that the planetary gear inside the clutch is stuck due to damage. After replacing the clutch, the fault is eliminated.
Fourth, the washing machine is not draining smoothly, or even unable to discharge water. Remove the drain valve. It is found that the spool tension spring has been disassembled, so that the drain valve cannot be opened when the electromagnet is attracted, so that the drainage is not smooth or even can not be drained. Replace the spool tension spring to eliminate the fault.
