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Common electrical faults and exclusion of drum washing machines

Posted on June 9, 2022 By ArticleManager

Common electrical faults and exclusion of drum washing machines

1. Common electrical faults and rows of washing machines using mechanical procedures

1. After the power switch is turned on, the power indicator is not on, and the machine does not work.

(1) Check whether the socket has 220V, 50Hz market.

(2) If there is electricity, check whether the socket is not well exposed. Disassemble the upper cover and test whether there is electric in the power supply of the power supply with a multimeter. If there is no electricity, Figure 4 indicates that the contact of the socket is not good. Please change the socket.

(3) If there is electricity, please check whether there is a problem with the power switch. After the power switch is pressed, the feet 1-3, 2-4 should be connected; if the buttons are loosened, the two pairs of switches are not connected.

2. After the power is switched, the power indicator lights light and does not enter the water. (1) Check whether the water valve is opened or stopped. If you touch the solenoid valve housing with your hand, if there is any vibration, if so, it means that the solenoid valve has worked. Open the water cage head. (2) Check whether the door is closed. The door is not closed, and the slider of the electromagnetic door lock is not in place, which causes the door lock tongue to be unable to go out. The door is not good. Just close the door.

(3) Does the check door switch MRL and MRN have an error in electricity and wiring? If there is electricity, is there any electricity between MRN and MRC with a multimeter? For example, there is electricity at both ends of MRL and MRN, and there is no electricity at both ends of MRN and MRC. When confirming that the door is closed, the electromagnetic door lock is replaced.

(4) If there is no problem with the door lock, please check whether there is a problem with the water level switch wiring? For example, the online marked as P11 should be inserted on the water level switch 11. P12 is inserted at 12 feet and pushed in sections. Check whether the P11 and P12 foot are electric (when the water is in, the P11 and P12 are connected to the water level, and the P11 and P12 are disconnected after reaching the water level, which is connected with P13). If there is no electricity, it means that the program controller has problems or related connection contact is not good.

(5) If the water level switch is correct, check whether there is electricity on the solenoid valve. Measurement with a multimeter, if there is electricity, it means that the solenoid valve is damaged and replaced.

(6) Please follow the chapter “Water inlet Process” to check the corresponding contact or replace the program controller.

滚筒洗衣机常见电气故障及排除

3. After the water is completed, the motor will not be washed.

(1) Check whether the water level switch wiring is wrong or loosen.

(2) Check whether the P11 and P13 are connected (the two contacts should be connected after reaching the water level). If it is not connected, it means that the water level switch is damaged and replaced.

(3) Check whether the motor is loosened. Such as loose and tight.

(4) If not loosen, use a multimeter to measure whether the motor is intact according to Figure 1 (or Figure 2). If damage, replace the motor.

(5) If the motor is correct, the problem lies in the program controller. Please press the chapter “Motor Operation Process” to check the corresponding contact or replacement of the program controller.

(6) If there is a speed adjustment board, please change the speed plate to see if the problem is solved.

4. Do not heat up when washing

滚筒洗衣机常见电气故障及排除

(1) Check whether the temperature controller is in the “0” bit. If in the “0” bit, the washing machine works in cold water washing and does not heated.

(2) Check whether the water level switching action is normal. Check the water level switch.

(3) Check whether there is voltage on the heating pipe (the program controller is in the heating range). If there is a voltage, then the power is disconnected, and the resistance value of the heating pipe is measured with a resistor file. It should be damaged and replaced.

滚筒洗衣机常见电气故障及排除

(4) If there is no voltage on the heating pipe, the temperature controller THRC and THR1 are connected. If it is not connected, replace the temperature controller.

(5) For example, the thermostat THRC and THR1 are connected, indicating that there is no problem with the temperature controller. Measure whether the thermostat 60 ° C is normal (if you press the high -temperature washing button, you should test whether the high -temperature washing button switch is normal), the blue corresponds to the 60 ℃ constant thermostat (normally closed), the green corresponding to the 40 ℃ constant thermostat (often often open).

(6) If there is no problem with the thermostat, according to the chapter “Heating Process”, the corresponding contact or replacement of the program controller is performed according to the “Heating Process”.

5. No drainage

(1) Check whether the program controller goes to the position of the drainage, if it is not, wait.

(2) Check whether there is electricity at both ends of the drainage pump. Touch the shell of the washing machine to see if there is a slight vibration. If so, it means that the drainage pump work is normal. Please check whether the drainage pipe road is blocked (put down the drainage pipe, see if there is water flowing out) or whether there are small clothing falling into the drainage pump and wrap the fan blades of the drain pump, so that no drainage is opened (open the bottom trim strip on the bottom trim (open the bottom trim strip Small door, the impeller cover of the drainage pump, check whether there are small clothing or other objects).

(3) There is no voltage at both ends of the drainage pump, and according to the chapter “Drainage Process”, check the corresponding contact or replacement of the program controller.

6. Not dehydration

(1) Check whether the program controller goes to the position of the dehydration, if it is not, wait.

(2) Check whether the water in the washing machine has been discharged. If it is not finished, wait patiently or press “no drainage” to repair it.

(3) If the water has been discharged, please check whether the motor is tightly inserted and whether there is a loose phenomenon. Insert.

(4) Measure whether the motor wiring is burned. If so, please change the motor. Dual -speed motors can replace the capacitor first.

(5) If the washing machine is equipped with a speeding board, try to change the speed plate.

(6) There is no problem with the above devices, please check the “dehydration process” below the chapter to check the corresponding contact or replacement of the program controller.

Second, common electrical failures and exclusion of using electromechanical integration procedures and exclusion

1. After the power switch is turned on, the power indicator is not on, and the machine does not work. Refer to the corresponding chapter of the mechanical program controller

.2. After the power switch is switched, the power indicator lights light and does not enter the water.

(1) The processing method refers to the corresponding chapters of the mechanical program controller 1, 2, 3, and 4.

(2) There is no problem with the above test. In the case of confirming that the plug -in is not loose, use a multimeter to measure whether the V41 and V42 are electric. If there is no electricity, replace the program controller.

3. After the water is completed, the motor will not be washed.

(2) There is no problem with the above test. In the case of confirming that the plug -in is not loose, the M64 and M65 ends of the program controller have voltage (70V ~ 90V). If not, please change the program controller.

4. Do not heat up when washing

(1) The processing method refers to the corresponding chapters of the mechanical program controller 1, 2, and 3.

(2) There is no problem with the above detection. In the case of confirming that the plug-in is not loose, check whether the temperature control potentiometer rotates in place, and then measure the two resistance values ​​of 1-2 points of the temperature adjustment potentiometer. The specific correspondence is as follows:

(3) If there is no problem with the above detection, replace the program controller.

(1) The processing method refers to the corresponding chapters of the mechanical program controller 1 and 2.

(2) There is no problem with the above detection. In the case of confirming that the plug -in is not loose, the multimeter measuring the program controller P43 and P44 have no voltage and P44. If nothing, change the program controller.

(2) There is no problem with the above test. In the case of confirming that the plug -in is not loose, the M64 and M65 ends of the program controller have voltage (200V ~ 220V). If not, please change the program controller.

3. Common electrical faults and exclusion of using a full computer program controller

1. After the power switch is turned on, the power indicator is not on, and the machine does not work.

(1) Refer to Article 1 and 2 of the corresponding chapter of the mechanical procedure.

(2) Check whether the circuit board plugs are loose. If so, intervene. Use a multimeter to measure the “power supply L” and “power N” ends. If there is, change the computer board.

2. After the power switch is switched, it shows normal and does not enter the water.

(2) Replace the water level switch to see if it can enter the water.

(3) If the water level switch is correct, check whether there is electricity on the solenoid valve. Measurement with a multimeter, if there is electricity, it means that the solenoid valve is damaged and replaced.

滚筒洗衣机常见电气故障及排除

(4) Use a multimeter to measure the line board “Power N” and “water inlet 1” (or “water inlet 2). If not, replace the computer board.

(1) Check whether the water level does not reach the water level due to low water pressure. wait. Whether the water level switch wiring is loose.

(2) Check whether all the plug -in plug -in on the electrical control board is loose. Insert.

(4) If not loose, use a multimeter to measure whether the motor is intact. If damage, replace the motor.

(5) If the motor is intact, whether there is voltage with the 8 -pin and 9 pin of the universal table (when washing, the voltage should be around 70 ~ 90V). If there is no voltage, replace the electrical control board.

(1) Check whether the temperature setting of the electro -controlboard is in cold water washing. If so, normal.

(2) Check whether the water level is correct. If the water level does not reach the water level, the system will not heated.

(3) Check whether the electrical control board is “heating pipe” and “power N” at both ends. If there is no electricity, replace the electronic control board.

(4) If there is a voltage, unplug the plug and measure the resistance value of the heating pipe with a resistance file. If you open the road, replace the heating pipe.

(1) Check whether the electrical control board runs to the position of the drainage, if it is not, wait.

(2) Check whether the “drainage” and “power N” of the electrical control board have electricity. If there is no electricity, replace the electronic control board.

(3) If there is electricity, use a multimeter to test whether there is a problem with the drainage pump winding. If there is no problem, please check whether the drainage pipe road is blocked (put down the drainage pipe, see if there is water flowing out) or whether there are small clothes to fall into the drainage pump, and wrap the fan blades of the drainage pump, so that no drainage (open the bottom of the bottom (open the bottom (open the bottom The small door on the trim, the impeller cover of the drainage pump, check whether there are small clothing or other objects).

滚筒洗衣机常见电气故障及排除

(1) Check whether the electrical control board runs to the dehydration position. If not, wait.

(4) Use a multimeter to measure whether the motor winding is intact. If the motor is intact, whether there is voltage with 8 and 9 pins of the universal table (when washing, the voltage should be around 210V). If there is no voltage, replace the electrical control board.

(3) Check whether the motor is loosened. Such as loose and tight.

5. No drainage

5. No drainage

6. Not dehydration

6. Not dehydration

(2) Check whether the water in the washing machine has been discharged. If it is not finished, wait patiently or press “no drainage” to repair it.

(3) If the water has been discharged, please check whether the motor is tightly inserted and whether there is a loose phenomenon. Insert.

(1) The processing method refers to the corresponding chapters of the mechanical program controller 1, 2, 3, and 4.

(1) The processing method refers to the corresponding chapters of the mechanical program controller 1, 2, 3, and 4.

3. After the water is completed, the motor will not be washed.

4. Do not heat up when washing

(1) The processing method refers to the corresponding chapters of the mechanical program controller 1, 2, and 3.

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