Maintenance and repair of air conditioning is not afraid of air conditioning and then "strike".

Air conditioning is an indispensable household appliance, and now there are more and more types and functions of air conditioning. For example, the most common ones are hanging air conditioner, cabinet air conditioner, central air conditioner and so on. Especially in summer, air conditioning plays a very important role, and its appearance greatly facilitates our lives, but there are many kinds of air conditioners on the market now, and the brands are numerous. But the air conditioner must be maintained when it is used. Then Bian Xiao will tell you about the maintenance and repair of air conditioners.

Maintenance and repair of air conditioner

Maintenance of air conditioner

periodic cleaning

It is usually cleaned once a month. When cleaning, pull out the filter. You'd better use a vacuum cleaner to suck the dust off it. You can also rinse it with clean water, dry it and put it into air conditioning for use. In a dusty environment, the filter screen needs to be cleaned frequently to prevent excessive dust from blocking the air outlet and affecting the refrigeration effect.

There is no need for dust removal for a long time.

When using a household central air conditioner that has not been used for a long time, it is necessary to take off the dust cover covered by the outdoor unit and check whether there is too much dust on the heat sink. If there is a lot of dust in the condenser and evaporator of the air conditioner, don't wash it with water at will, otherwise it will make water enter the compressor and affect the normal use of the air conditioner. Please ask professional technicians to clean it.

Open at least once a month.

Even if the household central air conditioner is not used for a long time, it should be turned on at least once a month. Otherwise, the lubricating oil in the working core compressor in the household central air conditioner will condense, and the compressor will be stuck next time, which will eventually lead to the abnormal use of the air conditioner.

Unplug the power supply when it is not turned on.

If you stop using it in different seasons, unplug the power supply and clean the machine. It is best to cover the outdoor unit with a cover. Before putting it back into use, you should check whether the ventilation pipe is blocked. If the sound of the machine is abnormal, please ask a professional to repair it in time. Don't start the machine by force, so as not to damage it.

Air conditioning maintenance method

The reason why the air conditioner is not heating 1. Refrigeration system failure.

1. Check valve (also known as check valve) leaks. The pressure difference between high and low pressure in refrigeration system decreases, the temperature of outdoor heat exchanger increases, and the heat obtained from the outside decreases, resulting in insufficient heating. When testing the system pressure, it will be found that the low pressure side pressure rises and the pressure difference between high and low pressure drops.

2. The defrosting controller is out of order. If the air conditioner can't turn into defrosting operation state in time, the evaporator will frost when the heat pump is heating, which will affect the heat exchange efficiency of the air conditioner and lead to insufficient heating capacity or even shutdown. We should focus on observing whether the defrosting temperature sensing device is misplaced, whether the contact is stuck or poorly contacted, whether the fan impeller slips or the air duct is blocked, and whether the solenoid valve or starting relay fails.

3. Insufficient refrigerant. A self-test can be simply performed to determine whether fluorine leaks.

4. Four-way valve cross gas. The heat pump air conditioner switches the cooling and heating states through a four-way valve. Some refrigerants that should participate in heat exchange directly flow back to the air return pipe from the compressor outlet pipe at the four-way valve, which leads to the decrease of refrigerants participating in heat exchange and the decrease of heat exchange efficiency, thus resulting in insufficient heating capacity.

Reasons for air conditioning not heating Second, environmental factors

Heating and cooling air conditioners are divided into three types: heat pump type, heat pump assisted electric heating type and electric heating type. In the case of equal heating capacity, the first two kinds of electricity consumption is about half less than that of the third kind. Considering the power supply capacity and electricity consumption, families generally choose the first two air conditioners (but pay attention to their conditions of use, the first two are only applicable to the environment above -5℃, obviously not applicable to the northern region).

It is normal that the ambient temperature of heat pump air conditioner is too low, and the energy efficiency ratio of air conditioner is also reduced, and the heating effect is not ideal in colder winter. For heat pump air conditioners without automatic defrosting, the lowest ambient temperature used is 5℃ above zero. Below this temperature, it is not hot or the effect is poor. This is because the frost accumulated on the external heat exchanger blocks the air flow and can no longer absorb heat from the outside. For the heat pump air conditioner with automatic defrosting, the lowest ambient temperature it uses is also -5℃, below which it cannot effectively heat.

The reason why the air conditioner does not heat is 3. Improper use.

1, if the air conditioner is used for a long time, the filter screen cannot be cleaned in time, and the internal air circulation is blocked, which will affect the heating effect of the air conditioner to a certain extent.

2. Too thick dust on the evaporator and condenser will also reduce the heat exchange effect, resulting in a decrease in heating capacity and an increase in power consumption; The heating temperature is set too low.

3. The doors and holes of air-conditioned rooms are not blocked, or the doors are often opened, resulting in indoor heat loss, which will inadvertently cause air-conditioning heating weakness.

Air conditioning is becoming more and more popular, especially in summer. Air conditioning is very helpful to us. It can not only create a very good comfortable environment for us, but also prevent tanning. Nowadays, air conditioners are more and more energy-saving, for example, they can be turned on and off at regular intervals. So it is very convenient for everyone to use it. In addition, according to the size of the home use area, air conditioning can also be used accordingly. Central air conditioning is suitable for large rooms, cabinets are more suitable for living rooms, and hanging machines are more suitable for rooms. I hope everyone can pay attention to this problem.