Does an air conditioner work when the voltage is low? 40

No, the starting voltage of the air conditioner cannot be reached, and the air conditioner cannot work.

Taking the air conditioner using a single-phase 220V power supply as an example, the fixed-speed ordinary air conditioner works normally at the lowest voltage of 187V, and the inverter air conditioner works normally at 198V.

If the voltage is lower than this, it is easy to cause the compressor not to start or burn the inverter module.

It depends on whether it is an inverter air conditioner or a fixed-frequency air conditioner, the fixed-frequency air conditioner cannot work normally due to low voltage, while the inverter air conditioner can work normally when the voltage is low.

I have done the development of Haier air conditioner, and when the air conditioner was developed, the minimum starting and operating voltage of the design was 160V, and it could be started at 120V when actually measured, but the operation may be unstable. 160V should be able to meet the electricity requirements of most users.

It depends on how low the voltage is, and the general inverter air conditioner can be started at low voltage.

At present, the power grid voltage in some areas of China (especially in rural areas) is low, the air conditioner runs at low voltage, if the overload protector fails or burns out, the fault of the compressor motor line group is often burned, and the user must pay attention to the following two problems when using the air conditioner in the low-voltage area:

When the grid voltage is low, the compressor motor is started, and when the main control switch is turned to the refrigeration gear, pay attention to whether the compressor has been started and entered the running state. If it can't start, it should be shut down immediately, and if it can't be started again, the refrigeration should be suspended, and the voltage should be back up before starting it. Do not leave without authorization when the main control switch is turned to the refrigeration gear, and repeatedly turn on and cut off the frequent work with the compressor overload protector, in case it is connected to the knot, and the high current burns it through the compressor motor line.

If conditions permit, at the moment of the air conditioner's transmission, the pointer of the ammeter can be instantaneously hit to the end because the starting current is too large. Then return to the normal operating current value of the air conditioner (see the product manual). For example, the normal working current of an air conditioner with a cooling capacity of 3480W (3000kcal H) is if it is activated at the moment, and the pointer of the ammeter hits to the end.

Then the pointer is fingered back at 1a, indicating that the compressor is not working, while the current value of 1a only indicates the operation of the wind turbine. At this time, the main control switch is used to cut off the compressor circuit.

The air conditioner runs in the case of low grid voltage, often due to grid voltage fluctuations, so that the compressor runs very abnormally, and sometimes it will automatically stop.

1. Low voltage will cause the machine to fail to operate normally, and frequent switching will increase the number of current impact clicks and affect the life of the machine.

2. The voltage is too low, and the electrical appliance still wants to exert its due power, so it has to increase the current, and the current is too large, which will make the electrical equipment heat up and burn out. The current continues to rise until it burns out the motor.

3. If the voltage is too low, it will damage the air conditioner, especially for the inverter air conditioner, which can easily cause the air conditioner to fail to start normally or even the main control components to be burned, and the long-term low-voltage power supply will also have a great impact on the life of the fan motor and compressor.

4. The voltage is too low and the air-conditioning compressor does not work, which has a certain impact on the air-conditioning compressor, because the voltage is too low, the compressor operating current will increase, the compressor thermal protector will act, cut off the power supply, and the compressor will stop running, and if it is in a low-pressure state for a long time, the compressor will be damaged.

The power supply of household air conditioner is best supplied by a separate circuit from the main power switch, and the power cord of household air conditioning power supply should be at least 4 square single-core national standard copper wire, theoretically the larger the wire diameter of the power supply power supply, the better; If the wire diameter of the power supply line is too small, it is easy to cause the voltage to drop and the power line will overheat.

Can you use an air conditioner with low voltage? Wouldn't the cooling effect be very bad?

Of course, the unstable voltage will affect the cooling effect of the air conditioner, if the voltage is low, the air conditioner will not cool down, and it is better than a fan. Moreover, it also affects the life of the compressor (the compressor is like the CPU of the computer) The current is unstable, causing the compressor to stop in an abnormal state, and it will take a period of time to start normally, which is also a way for manufacturers to protect the compressor in the design.

Does insufficient voltage have an effect on the air conditioner.

Of course, there is an impact on the spread out, the air conditioner that is too low is easy to start, and the refrigeration effect will also be affected, but the general air conditioner can supply power normally within a certain voltage range, and there is no major problem in the range of 90%-110% of the rated voltage.

What is the effect of low voltage on an air conditioner?

What to do if the low-voltage air conditioner belt is hanged.

1. If the voltage is too low, the machine will not operate normally, and frequent switching will increase the number of current impact clicks and affect the life of the machine. 2. If the voltage is too low, the electrical appliance still wants to exert its due power, so it has to increase the current, and if the current is too large, the electrical equipment will be heated and burned. The current will continue to rise until the motor burns out.

3. The voltage is too low to damage the air conditioner, especially the inverter air conditioner, which can easily cause the air conditioner to not start normally, and even burn out the main control components, and a long-term low-voltage power supply fan motor, compressor life is also great. 4. If the voltage is too low, the air conditioning compressor will not work, the air conditioning compressor will have a certain impact, because the voltage is too low, the operating current of the compressor will increase, the compressor thermal protector will take action, cut off the power supply, the compressor will stop running, if it is in a low pressure state for a long time, it will damage the compressor. The home air conditioning power supply is best a separate total power switching power supply circuit, and the power cord of the household air conditioning power supply should be at least 4 square single-core GB copper wire, theoretically, the larger the power supply wire diameter, if the power cord diameter is too small, it is easy to cause the voltage to drop, and the power cord will overheat.

The low voltage makes it difficult to start the compressor motor, and when the air conditioner is in use, the voltage is relatively low, which will make the compressor of the air conditioner difficult to start.

When turning on the air conditioner, pay attention to whether the compressor of the air conditioner has been started and running, and find that because the voltage is low, if the compressor cannot be started, it should be shut down immediately, and the air conditioner should not be forced to be used, and if the compressor can not be started when it is turned on again, it should stop the refrigeration of the air conditioner at this time, and wait until the voltage is stable before use. Generally, the voltage is relatively stable in the morning, or on rainy days.

The voltage is too low to damage the air conditioner, especially for the inverter air conditioner, it is very easy to cause the air conditioner to fail to start normally or even the main control components to burn, and the long-term low voltage power supply has a great impact on the life of the fan motor and compressor, and due to the insufficient power supply voltage, it will cause the condenser fan and evaporator fan to not operate normally, and the heat dissipation is poor.

Low voltage solution:

1. Buy wide-voltage household appliances. Since the current household appliances have taken into account the fluctuation of voltage in the design, household appliances have a certain range of voltage use. The wide-voltage household appliances are specially designed for rural electricity consumption, and have a wider voltage range than urban household appliances, so you can try to buy wide-voltage appliances when buying household appliances.

2. Purchase a power regulator. This can be said to be the simplest and most effective way, modern voltage regulators have full voltage stabilization functions, automatic power-off protection functions and delayed output power supply functions, can provide all-round protection for home appliances.

<> the general rated voltage of household air conditioners in China is 220V, and there is no problem with a fluctuation of 5%, a maximum of 15%, and a minimum of 186V. If the voltage is too low, an undervoltage protection device can be installed to prevent damage to the compressor due to too low voltage. When the inverter air conditioner is running, the power supply voltage should range from 187 to 242V.