The reason why the electric fan can t start, how to solve this problem

What international jokes are you making? You are using 110v electricity abroad??? There will be a low voltage, and even if the voltage is low, it should be short-term and not long-term, right?!

First of all, you use a multimeter to test whether the voltage of your household electricity is about 220V, if so, it is not purely a problem of very low voltage! It's that there's something wrong with your home's appliances. Generally speaking, the air conditioner and fan can't start, and the starting capacitor is broken!

There are many reasons why the air conditioner can't start, there are remote control broken, sensor broken, and so on!

But as with fans, the biggest possibility is the starting capacitor!

The starting capacitor of the air conditioner is a cylindrical original, you can see it when you disassemble the shell of the air conditioner (near the place where the wiring is), half of it is black or blue, and there are two wires.

The slow speed of the fan is also caused by the aging of the starting capacitor, you can disassemble the shell of the fan button, which has a black cube element inside, which is also 2 wires. You can buy each for only 2 or 3 yuan, or 4 or 5 yuan, and you can buy it as soon as you exchange it, saving money!

If you use the electric fan for a period of time and find that it cannot be started, what will be the reasons for it, let's help you analyze it.

The reason why the electric fan doesn't start.

1. The main reason why it is difficult to start an electric fan is due to the decrease in the capacity of the starting capacitor.

A decrease in the capacitance capacity of the motor can make it difficult to start, or it may not start. If this happens, it is recommended to replace the capacitor with the same capacity.

Because the single-phase motor has two windings, one is the starting winding, the other is the running winding, the starting winding and capacitance become a capacitive load, the running winding is an inductive load, the capacitive load is an angle of current leading voltage, the inductive load is an angle of current lag voltage, choose the appropriate capacitance, it will be the current difference of 90 ° in the two sets of windings, the space difference of 90 ° angle of the winding through the current of 90 ° difference will produce a rotating magnetic field.

2. The motor shaft is dirty, which makes it difficult to start.

If the capacitor is not broken, there is also a possibility that the bearing is short of oil, and the motor can be cleaned up. Generally speaking, when the impeller is started by hand, it is very heavy, that is, where the bearing sleeve is short of oil, just add some lubricating oil. First of all, unplug the power supply of the fan, open the protective net to remove the fan blades, use the oil to align the root of the motor shaft to drip oil, while dripping oil, turn the motor shaft by hand, and return several times until you can easily rotate the motor shaft.

3. The motor auxiliary winding is broken, that is, the coil of the tube start and direction is broken, causing it to not rotate, but it can be turned up by helping him turn it with his hand, which means that the main winding is not broken.

Thank you!!!

1. There are the following reasons:

1) The power supply is not plugged in properly, and the power cord is broken;

2) The timer is broken;

3) The motor is broken;

4) The button is broken;

5) The capacitor is broken;

6) None of them are broken, the motor is out of oil. The shaft and bushing are stuck without oil. But at this time, a small humming sound can be heard in the electric part of the electric fan, but it cannot be turned on for a long time, and the motor will be burned;

7) The wiring inside the fan is faulty.

2. Electric fan, known as electric wind in Taiwanese, is a household appliance that uses electricity to drive the fan blades to rotate to accelerate air circulation, mainly used for cooling and air circulation. It is widely used in homes, offices, shops, hospitals, hotels and other places. The electric fan is mainly composed of parts such as a fan head, fan blades, a grille and a control device.

3. The fan head includes an electric motor, front and rear end covers, and a moving head air supply mechanism. The main component of an electric fan is an AC motor. It works on the principle that the energized coil rotates under force in a magnetic field.

Electrical energy is converted into mechanical energy, and at the same time, due to the resistance of the coil, it is inevitable that some of the electrical energy will be converted into thermal energy. Modern household fans can be divided into ceiling fans, table fans, ventilation fans, turning fans, air conditioning fans (i.e. cooling fans) and so on. Many electric fans also apply electronic technology and microcomputer technology, which can be controlled remotely, but its main driving principle.

4. When the electric fan is working (assuming that there is no heat transfer between the room and the outside world), the indoor temperature not only does not decrease, but rises. Let's analyze the reason for the temperature increase: when the electric fan is working, because there is a current through the coil of the electric fan, the wire is resistive, so it will inevitably generate heat to release heat, and the temperature will naturally rise.

But why do people feel cool? Because there is a lot of sweat on the surface of the human body, when the electric fan is working, the indoor air will flow, so it can promote the rapid evaporation of sweat, combined with "evaporation needs to absorb a lot of heat", so people will feel cool.

The main reason why electric fans are difficult to start is due to the decrease in the capacitance capacity of the starting capacitor.

A decrease in the capacitance capacity of the motor can make it difficult to start, or it may not start. If this happens, it is recommended to replace the capacitor with the same capacity.

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1.Motor short circuit motor is the most important device in the fan, with it to ensure the normal operation of the power, but if there is a short circuit between the motor windings, it will make it appear weak to rotate and the temperature has a rising trend, if you are worried that it is not caused by a short circuit, you can use a multimeter R1 or R10 to measure the internal resistance of the coil.

2.There is also a situation that will lead to slow speed or weak start, that is, the lack of oil in the motor bearing, if it is caused by this reason, you can dial the blades by hand when the power is off, feel whether there is resistance, and you can turn a few turns when you are normal. If you feel that the resistance is large and you can barely turn it, then you can determine that there is a lack of oil, and you need to do it.

3.Capacitor failure If the capacitor is faulty, it will also make the fan slow down, if there is a multimeter at home, you can use it to test it, if the test results show that the capacitor has been broken, you should replace it with a new one, only in this way can the fan return to normal, back into home use.

4.Wear and tear caused by a long time If a fan is used for a long time, the motor will wear out.

1. The motor is short-circuited.

The motor is the most important device in the fan, with which it can ensure the normal power-on operation, but if there is a short circuit between the motor windings, it will make it rotate weakly and the temperature has a rising trend, if you are worried that it is not caused by a short circuit, you can use a multimeter R1 or R10 to test the internal resistance of the coil.

2. The motor lacks oil.

There is also a situation that will lead to slow speed or weak start, that is, the motor bearing is short of oil, to judge whether it is caused by this reason, you can use your hand to dial the blade when the power is off, feel whether there is resistance, and you can turn a few times when you normally dial it. If you feel that the resistance is large and you can barely rotate, you can determine that there is a lack of oil, and you need to clean it in time and add some special engine oil.

3. Capacitor failure.

If the capacitor is faulty, it will also make the fan slow to rotate, if there is a multimeter at home, you can use it to test it, if the test results show that the capacitor has been broken, you should replace it with a new one, only in this way can the fan return to normal, back into home use.

The electric fan motor is a single-phase motor, and there are two sets of coils in the machine, one of which is the starting coil. The starting coil is matched with the starting capacitor to start. If one of the two fails, it can't start. The circuit diagram is as follows:

Your electric fan won't start, first check whether the starting capacitor is off or broken. Use a multimeter to check and measure the starting coil again to see if it is broken. All of the above are in good condition, see if the fan blades rotate flexibly, add a little lubricating oil.

Reason 1: The plug of the electric fan is loose or the line is not energized. When the electric fan does not rotate, we must first check whether the power plug is loose and try to replug it into the socket to confirm.

Then check whether the wire of the electric fan has any traces of breakage, the wire is easy to break when it is in a discounted state for a long time.

Reason 2: The electric fan motor lacks lubricating oil. We all know that the core component of the electric fan is the motor, and only the rotation of the motor shaft can make the electric fan rotate.

After using it for a period of time, the electric fan will have difficulty rotating due to the lack of lubricating oil on the shaft, which will eventually cause the electric fan to not rotate. In the case of power failure, use your hand to toggle the fan blades, if the fan blades rotate more sluggishly, you can judge that the motor lacks lubricating oil.

I can talk to you about your questions. First of all, I want to ask you that there is no display boot even if the power supply is directly applied? The most common problem is that the rotation is not flexible, gently pull the fan blade with your fingers should be able to rotate freely, which is normal, if you can't disassemble and clean the shaft, shaft sleeve, add special oil to the felt pad, ordinary engine oil cannot.

After this treatment, it is generally normal, and if it is not normal, you need to check whether the capacitor is invalid and whether there is a problem with the winding.

The reasons why the electric fan can't start: first, there is no power supply; The second is that there is a problem with the electric fan motor! Fix the problem, check the power supply, if it's not a power supply issue, you need to go to a repair shop to fix it!

Hello, the electric fan can't start, this is because the motor in the electric fan is faulty, and the motor needs to be removed for inspection and maintenance.

Check the switch and power supply, take it to the maintenance point to repair it, there is no need to tinker with it yourself, it is easy to break.

You can take it out to see what caused it, and if it doesn't work, take it to the repair shop to help solve it.

1.The priority is that the motor lubrication is not good, the shaft part should be lubricated with oil, I was in this situation yesterday, the blade is installed on the motor can not be dragged, and after I remove it, the shaft can still run normally, which means that the motor is not broken. How can you tell if you are short of oil?

That is, after disconnecting the power supply, you gently dial the fan blade, and find that the rotation is a little stiff, which means that the oil is gone, and the rotation is very easy, indicating that the lubrication is good, and this is not turned for other reasons.

2. Secondly, you have to consider how long the electric fan has been used, the motor will wear out, and the shaft sleeve of the motor will be easily burned out after wearing. If the motor is used for a long time, the internal resistance of the motor will also become larger, and the load capacity will be lower, resulting in the inability to drive the fan blade to rotate.

If you haven't used it for a long time, there must be dust on it, if you don't wipe it clean, when you turn on the fan, there is dust everywhere in the house, and the dust is thick, and the resistance of the motor is greater, and the rotation will be slower. If there is a starting capacitor in the home, but the capacity is different from the motor starting capacitor, you only need to pay attention to replace the new starting capacitor with a capacity of about 20% of the original capacitor capacity, and the withstand voltage value is not lower than the original starting capacitor to use it normally. I have encountered small electric fans at home, such as insufficient or damaged capacitors, burned insurance, short circuits or open circuits in motor windings or even complete damage, lack of oil in bearings, impurities in gearboxes, and so on!

<> motor problem: after power-on, the motor does not respond, we first use a multimeter to measure the voltage of the motor, the voltage is normal, and then test the capacitance, the capacitance is also normal, which proves that the motor is damaged, and the motor can only be replaced in this case. Most people may encounter the following phenomenon, the electric fan does not rotate, you use your hands to pull it out or it will take a long time to slowly turn up, and after using it for a period of time, you find that it will not move when you pull it out by hand.

The probability of damage to the motor is also very high, especially in some inferior motor factory production, the copper wire is not up to standard, the heating is too hot and short circuit is a common thing, we do not need to use any multimeter to measure the resistance value, you can smell or see directly. If it is not the lack of oil in the shaft, then the capacitor may be burned, go to the hardware store to buy the capacitor with the same V and install it. If the fan coil is fine, turn the fan shaft by hand to see if it is flexible, disassemble the lid if it is flexible, add some butter to both ends of the lid, install it and try again.

If you are just starting to use it, it may be that the power is too small, or the voltage is too low. If you use it for a period of time, or if you suddenly lose strength and can't turn during use, it may be that there is a broken circuit, resulting in phase loss.

There is a noise when the fan is running. removal of debris; adjusting or replacing the fan blades; Straighten the shaft; fastening or replacing bearings; replacement or adjustment of bearings; Retighten the bolster screws; Tighten the retainer iron.

If the electric fan can't start, it may be that the motor capacity is reduced, or the bearing can't rotate due to lack of oil, and the electric fan can't start if it's too dirty, so you can check it.

The electric fan can't start, maybe the inside of the electric fan is burned out, so that the electric fan can't be incited, or maybe the motor of the electric fan can't be invented, which causes the electric fan to not run normally.

There is a high probability that the power supply of the electric fan is in poor contact, try to plug and unplug it again.