三洋洗衣机故障维修

三洋洗衣机故障维修 SANYO washing machine troubleshooting SANYO washing machine does not enter water Fault phenomenon: turn on the power, the switch indicator light, but the washing machine does not enter water. Detection and judgment: according to the circuit principle analysis, 220V power supply through the power switch, program control timer, water level pressure switch, normally closed contact to the inlet valve, so that the inlet valve work. First of all, with Multimeter 250V AC Gear Measuring inlet valve, coil at both ends of the 220V voltage, indicating that the power switch is normal. Use multimeter Rx lK gear measuring electromagnetic coil resistance LAN. It was found that the resistance is infinite (normally 4.5K.), that has been open. The water inlet valve of the utility model is mainly composed of an electromagnetic coil, a valve core and a corrugated membrane. The utility model has the principle that when the water supply is in normal condition, when the coil is energized, the central hole valve core is lifted, and the water at the water inlet is down from the central opening of the corrugated membrane, so that the corrugated membrane rises and flows into water. When the water reaches a certain water level, the water level detection automatic power-off switch, solenoid valve power loss, decreased, the center hole is blocked from flowing into the water hole guiding device, pressure equalization, corrugated membrane decreased, then stop the water. In this case because the water inlet valve open coil, causing the center hole of valve can not be mentioned, of course not water. Maintenance method: after replacing the same type of intake valve, troubleshooting. Emergency treatment: if the water inlet valve is not available, the method of replacing the coil alone can be adopted. Its method is: remove the original coil, with 0.06mm diameter high strength enameled wire winding 14750 laps, immersed in insulating paint, dried air can be used. SANYO XQB20-6 washing machine more than water Fault phenomenon: after the boot, you can enter the water, but after reaching the highest water level, still more water, can not be transferred to the washing process. Detection and judgment: from the fault phenomenon analysis, the water level switch is faulty. The working principle of the water level switch is that after the power is switched on, the voltage is controlled by the program, the timer contact and the normally closed contact of the water level switch are added to both ends of the inlet valve coil, and the inlet valve works to start the water inlet. When the water is added to a certain water level, the air in the water pipe generates pressure to push the water switch of the water level switch to jump to the C point, the inlet valve is broken, the washing motor circuit is switched on, and the motor is started to run. From the above principle analysis, if the water level switch internal vibration film jump spring damage or pressure of the trachea leak, resulting in the contact can not be converted, that will cause more than water failure. First check the pressure pipe without damage and the connection is normal. Remove the water level switch and measure the resistance between the L point and the 3 point with the multimeter Rx L. When measuring, use the mouth to the water level switch, the trachea, the population blows, and carefully listen to "no" "bang" sound, the resistance value is infinite (normal should be 0). The vibration film jump spring contact has been damaged. The inlet valve can not be broken, so the water will not stop. Maintenance method: after the water level switch is changed, the trouble is eliminated. The SANYO XQB20--6 washing machine can not be drained Fault phenomenon: after washing, the washing function is normal, but the washing machine doesn't work when draining. Detection and judgment: first, check the program controller. The machine adopts CXD-Q-11 mechanical and electric program controller. Its structure principle is that a 5W1 permanent magnetic single phase pole type miniature low-speed synchronous micro motor is used as the power source to drive the cam reduction mechanism, Control the cam mechanism on the opening and closing of contacts, complete a variety of procedures: first check the drainage electromagnet and door switch, the result of its function is perfectly normal. After checking the micromotor, it is found that the micro motor does not work. The causes of micro motor damage are as follows: the voltage fluctuation of the power grid is too large; the drive of the reduction mechanism is not flexible and has the phenomenon of clamping; the micro motor itself is of poor quality, which causes the motor to be damaged. The effective control in this example makes the armature unable to pull in and make noise. Maintenance method: the solenoid adjustment screw fastening, troubleshooting. The SANYO XQB20-6 washing machine failed to drain Fault phenomenon: washing machine drainage failure, other functions are normal. Detection and judgment: this fault is usually caused by electrical or mechanical system problems. First check drain valve, electromagnet were normal, parts and components is also normal, that is normal. The mechanical system, using a multimeter to measure the resistance value of the traction electromagnet, drainage, and found that the resistance value is 125 ohms (normally 40 ohms), the investigation of the solenoid coil open circuit. Maintenance method: after changing the electromagnet coil, test machine, troubleshooting. Drainage of SANYO XQB20-6 washing machine has sound (a) Fault phenomenon: large abnormal noise is emitted during drainage. Detection and judgment: the cause of abnormal noise when the automatic washing machine drains: (1) working voltage is too low. According to the national standard, the operating voltage of the drain electromagnet should be between 180 and 240V, and below the minimum voltage, it will cause insufficient traction force of the electromagnet, and the armature will send a strong vibration and a harsh cry; (2) because the traction electromagnet is open type, it is exposed in the box of the washing machine, the armature and yoke surface is corroded and stained with dirt, resulting in poor contact. (3) an adjustment screw loose, or drainage valve screws loose, causing the armature stroke of the ultra poor, lack of attraction to the electromagnet armature. The stroke of the armature is between 14 - 17mm, and the stroke is too bad, which will affect the free pull of the armature. (4) between the spring water draining electromagnet failure or skeleton and magnetic yoke with loose. After checking, the valve core of the drain valve is connected with the spring before the overhaul of the machine. Because the tension spring is too high, the traction force of the electromagnet is affected, so the abnormal noise is emitted. Maintenance method: after the replacement of the spool extension, troubleshooting. SANYO washing machine E4 fault code E4 the same process, third hit the barrel. The reasons for this fault code are mostly caused by uneven distribution of clothes in the bucket, as well as clutch damage. Close the door cover of the washing machine and try to distribute the clothes evenly in the bucket. If the trouble is still solved, the clutch can be replaced. Drainage of SANYO XQB20-6 washing machine has sound (two) Fault phenomenon: large abnormal sound occurs when draining. Detection and judgment: when the sound drainage is mainly caused by the electromagnet. The main reasons are as follows: (1) because the traction electromagnet is open type, it is exposed in the box of the washing machine, the armature and yoke surface is corroded, plus frequent use, the armature and yoke are repeatedly collided, causing the surface zinc coating to fall off, The contact surface corrosion causes the contact to be bad, will produce the noise in the work; (2) the framework of the drain electromagnet is loosened between the yoke and the inner wall of the yoke; (3) the effective stroke of electromagnet is too bad. Normally, the stroke of the armature should be controlled at 14 - 17mm. If the stroke is too bad, the traction of the electromagnet on the balance iron is insufficient, so that the armature is not attracted properly. After checking the electromagnet without corrosion, it is found that the adjustment screw of the electromagnet is loose, which affects the effective control of the stroke of the electromagnet, so that the armature can not freely pull in and make noise. Maintenance method: the solenoid adjustment screw fastening, troubleshooting. SANYO washing machine E5 fault code E5 low voltage protection, automatic operation will be resumed after the voltage of the grid is raised Most of these faults are voltage problems, and few of them are computer board failures. If the voltage is no problem, the computer board can be replaced, and the trouble can be eliminated. SANYO XQB20--6 washing machine work program disorder Fault phenomenon: washing machine work, the program is disorder, not normal. Inspection and judgment: from the phenomenon analysis, maintenance center, this fault usually occurs on the program controller,. Apart from checking the program controller, it is found that the contacts in the program controller are seriously deformed and the telephone repair is caused by the serious ignition between the contacts. Maintenance method: after the contact bond is separated, the ablation contact is polished with metallographic abrasive paper, after sale telephone, test machine, troubleshooting. Overhaul experience: if repaired according to the above method, the SANYO washing machine is still in trouble. The program controller can not be repaired and needs to be replaced. The SANYO XQB20-6 washing machine is out of order Fault phenomenon: washing machine washing, motor working time is short, long downtime, and motor stalling seems to have appeared in the dry sound, when the switch does not turn, but the boot can smell the burnt smell. Inspection and judgment: from the above fault analysis, the problem may be damaged or jumped in the electrical control part of a component. Open the program controller after boot cover, check, found the standard washing change-over switch T6 dynamic and static contact action when the spark, then check found plastic fixed card fixed T6 two static contact damage, resulting in positive contact with the moving contact contact at the same time, make the starting capacitor short circuit, which can be started, motor stall. In the micro motor control program controller, when the cam rotates another position, make the T6 with a static contact apart, the motor can rotate normally, but only in one direction of rotation, another direction because of the two static contacts and movable contact between and connected, resulting in electric motor can not rotate, so stop for a long time. When the micro motor causes the program controller to be in the position, because of the malfunction of the T6, the motor is time sensitive, so when it is dry, the rotor does not rotate at the time of rotation. Maintenance method: make a fixed card (with the same thickness of epoxy resin insulation board) installed, test machine, troubleshooting. SANYO XQB20-6 washing machine leakage Fault phenomenon: after the power supply, the washing machine has hemp inductance. Detection and judgment: after the power supply, when the body contacts the box, there is hemp inductance, indicating that the washing machine leakage phenomenon. The cause of leakage is: (1) inductive leakage; (2) ground wire break or socket, zero line and ground wire together; (3) leakage of motor or capacitor; (4) insulation of electrical components is damaged: (5) the part of wire joint is not sealed tightly: (6) when the power supply leads to be connected again, the grounding wire is connected wrong; (7) water inlet of program controller; (8) the motor is damped; (9) use a washing machine in an excessively humid environment. The reason for this failure is caused by water in the timer. Maintenance method: dry the water in the timer, troubleshooting. The SANYO XQB20-6 washing machine is leaking Fault phenomenon: leakage occurs during washing, Detection and judgment: washing machine leakage is mainly caused by poor sealing and water storage parts damage. There are 6 common reasons: (1) the water inlet connection pipe damage; (2) the faucet mouth is not smooth in contact with the sealing ring is not strict; (3) the size of seal wear; (4), drainage tube is broken; (5) water damage; (6) the drainage pipe and the overflow pipe connection mifengbuyan. After checking the water inlet pipe leakage, take off the faucet, found that its sealing ring has been aging, thinning, lost the sealing effect. Maintenance method: replace the sealing ring, troubleshooting. SANYO XQB20-7 washing machine does not enter water Fault phenomenon: turn on the power, the indicator light, press the start button, buzzer sound, but the washing machine does not enter the water. Inspection and judgment: according to the fault phenomenon analysis, the fault is in the water inlet system. After checking, the tap has been opened and the water pressure is normal, but the filter net is found to be blocked by sundries. Maintenance method: use the brush to remove the water supply blockage, troubleshooting. SANYO washing machine drainage is sound Malfunction: abnormal squeal when draining. Detection and judgment: it is estimated that the washing machine drainage electromagnet is not good. Cut off the power supply and check the drain electromagnet. It is found that the armature and yoke of the electromagnet are seriously rusty. Therefore, the electromagnet is not contacted properly. Maintenance method: use "0" "sandpaper" to polish the surface of the electromagnet, clean, and then coated with a very thin layer of butter, test machine, troubleshooting. SANYO XQB30-6 washing machine unidirectional rotation Fault phenomenon: when washing machine washing, the impeller can only one-way rotation, the program controller pointer still stay in the initial position. Detection and judgment: by analysis, the washing machine can rotate, illustrate the water pressure switch, washing motor are good, but the program pointer does not rotate and the motor only one-way rotation, that synchronous micro motor can not reverse timing. The program indicating needle is arranged in the washing gear on the resistance, with a multimeter LK gear measurement of micro motors is infinite (normally should be 20K Ohm). This leads to internal winding of synchronous micro motor burned circuit, caused by failure of unidirectional rotating impeller. Maintenance method: after replacing the same type of micro motor, installation, troubleshooting. SANYO XQB30-7 washing machine does not enter water Fault phenomenon: after power on, the washing machine does not enter water. Inspection and judgment: this fault usually occurs in the water inlet system. Electrify, Open the program controller, indicator light, that program controller is energized, the inlet valve is energized after the beginning of the water, respectively. Check the open shut Tl, T2, T-3 and the water inlet valve, found that Tl, T2, T3 and normal contact, estimation problem in the inlet valve. Open the inlet valve check, it is found that the inlet valve spring elasticity is insufficient, so that the inlet valve can not open, causing no water. Maintenance method: replace the same type of inlet valve spring, test machine, troubleshooting. The SANYO washing machine suddenly stopped working The fault is usually caused by fuse fusing, and can be divided into two cases: (L) the circuit is normal and may cause a fault. The possible cause is: the voltage of the supply is too low. When the supply voltage is below the minimum limit, the current of the motor and electromagnet will increase if the load is constant, thus fusing the fuse. The power supply voltage is too high. If the power supply voltage is too high, the air gap flux of the motor will be increased, and the current will increase rapidly, thus winding or fuse of the motor will be burnt out. Overload of load. The normal state in the laundry machine, such as washing or dewatering bucket stuck, drive axle have fault, bearing damage, long time the motor overload or stall, electromagnet fail completely absorbed, will make the current increases rapidly, which burned motor winding or fuse. The specific cause of overload of the load shall be detected to exclude it. (2) the circuit has short circuit fault. During the process of water inlet, the fuse is clear. Pull out the inlet valve lead plug and measure the resistance of the inlet valve with a multimeter. If the resistance value is near zero, the inlet valve coil is short circuited; if the resistance is normal, the water inlet circuit may be short circuited. During the washing or rinsing process, the fuse is blown. The resistance between the lead of the two winding and the center line of the motor is measured by the multimeter resistor. If the resistance is zero, the motor is short circuited. The resistance between the two terminals of the capacitor is measured. If the resistance is very small, the capacitor may break through the short circuit. If the motor or capacitor is normal. There may be a short circuit fault in the washing or rinsing circuit. During the drainage process, the fuse is blown. The resistance between the two terminals of the drain electromagnet is measured by a multimeter. If the resistance is very small, the electromagnet coil is short circuited. Otherwise, there may be a short circuit fault to drain. During the dehydration process, the fuse will fuse. In the process of dehydration, both the motor and the electromagnet are in working state. Therefore, when the dehydration, regardless of motor or capacitor short circuit, or the solenoid coil short-circuit, can fuse fuse. Unidirectional rotation of impeller of SANYO XQB20--6 washing machine (1) Fault phenomenon: when washing, impeller one-way rotation, can not reverse. Detection and judgment: XQB20-6 type automatic washing machine adopts an electric program controller. It is estimated that the program controller failed and the impeller can not be reversed. In the maintenance practice, the malfunction of the electric program controller is often caused by the internal micro motor or the internal control impeller of the program controller. The cam contact plate is closed, and the impeller can not be reversed. The trouble of the machine is that the cam contact piece is sintered and stuck together after the sparking. Maintenance method: repair, adjust the contact piece, invalid, have to replace the program controller, troubleshooting. One way rotation of SANYO XQB30-7 washing machine (1) Fault phenomenon: washing machine, the impeller can only one-way operation. Detection and judgment: check the washing motor is normal, so the fault may occur in the control circuit of the program controller. When the water level reaches the predetermined water level, the pressure of the water level, the pressure switch and the gas storage chamber are increased, and the NC in the pressure switch device is converted to NO, so that the inlet valve is powered off and the water is stopped. At this time, the micro motor TM is energized and begins to enter the washing state. If the current selection switch is pressed, the impeller will operate in reverse direction and wash. From the above analysis, first of all, check the water selection switch is normal, and then each of the program controller contacts are checked and found that T8 contact is not normal, Maintenance method: after cleaning T8 contacts, then polished, make it in good contact, test machine, troubleshooting. SANYO XQB30-7 washing machine unidirectional rotation (two) Fault phenomenon: standard washing can only be counterclockwise rotation, other functions are normal. Detection and judgment: due to other normal conditions, the problem may be within the program controller to control the standard clockwise rotation of the contact. Open the program controller, checked that the control standard of washing along the clockwise rotation of the blackened contact, try to contact and clean up after adjustment, test machine, fault still does not exclude, control the standard wash along the clockwise rotation of the contact has been unable to repair. Maintenance method: after changing the same program controller, test machine, troubleshooting. The dehydration function of SANYO XQB30-7 washing machine is invalid Malfunction: dehydration function failure, other function normal mouth Detection and judgment: from the phenomenon analysis, this fault may occur in the dehydration of electrical circuits. Drained of water, washing machine dehydration, at this time, contact T3a into T3b in the cam control, washing machine began to intermittent dehydration, clothes in the centrifugal barrel filled dispersed, keep the balance between the clothing dehydration, the residual water discharged to the outside of the machine parts, reduce the noise is conducive to high-speed dehydration. Check the program controller Tl, T3, T4 and T9 respectively. The contact of each group is normal. The indicator light L and water level selector switch are normal, check the micro motor TM normal, and estimate the problem on the safety switch. Check the safety switch and find the safety switch is damaged. Maintenance method: after changing the safety switch, add electric test machine, troubleshooting. SANYO XQB30-7 type washing machine alarm silent Malfunction: the washing and dewatering functions are normal, but the alarm is silent. Detection and judgment: due to washing and dehydration are normal, indicating that the fault is limited to the alarm circuit. The circuit of VTl, VT2, HTD, Cl, C2, VD1, Rl, R2, R3, R4, R5 and other related components are gradually found VT1, VT2 check, the transistor voltage is not normal, after examination of C and e between the short circuit breakdown VT1. Maintenance method: after replacing the same type transistor VT1, test machine, troubleshooting.