Why is the air conditioner not heating in automatic mode

Reasons why the automatic mode of the air conditioner does not heat up:

The defrosting controller fails to cause the air conditioner to not heat: the evaporator of the heat pump air conditioner is located in the outdoor unit when it is in the heating state, and if the heat pump air conditioner installed by hot defrosting and defrosting is installed, if the defrosting controller fails, so that the air conditioner cannot be transferred to the defrosting operation state in time, the evaporator frosting phenomenon will be presented during heat pump heating, which will affect the heat exchange efficiency of air conditioning heating, resulting in lack of heat production and even shutdown. At this point, it is important to look at whether the following phenomena can be present:

The defrosting temperature sensing device is misaligned, the contact is sticky or the contact is poor, the fan impeller is slippery or the air duct is blocked, and the solenoid valve or starting relay fails.

Lack of refrigerant causes air conditioning to not heat: due to the leakage of the refrigeration system, the refrigerant involved in the thermal cycle in the system is lacking, resulting in a decrease in heat exchange efficiency, resulting in a lack of heat production. If there is such a problem, there will be a lack of system heat, cooling capacity is lacking, at this time access to the pressure gauge, measure the pressure of the system, will find that the pressure is significantly lower than normal, and then check the pipeline, in the serious leakage will find obvious oil stains, and about the subtle leakage point should be detected by the electronic leak detector.

Four-way valve string gas to form air conditioner without heating: heat pump type air conditioner through four-way valve to switch cooling and heating state. In refrigeration, the outdoor heat exchanger is used as a condenser, and the indoor heat exchanger is used as an evaporator to absorb heat; When heating, the outdoor heat exchanger is used as an evaporator, and the indoor heat exchanger is used as a condenser to release heat.

If the four-way valve is full of gas, some of the refrigerant that should be involved in the heat exchange will be returned directly from the outlet pipe of the compressor to the return pipe at the four-way valve, resulting in a decrease in the refrigerant participating in the heat exchange, and the heat exchange efficiency will be reduced, thus causing a lack of heat production.

Check valve (also known as check valve) leakage to form air conditioning without heating: due to the huge difference in refrigeration and heating status, heat pump air conditioner only relies on electromagnetic reversing valve to switch the flow direction of refrigerant, which is often unreliable, therefore, check valve is often used in heat pump air conditioner to switch the flow direction of refrigerant safely and effectively. During the refrigeration cycle, the high and low pressure difference is small, the throttling element is the main capillary, and the auxiliary capillary is short-circuited by the check valve; During the heating cycle, the check valve connected in parallel with the auxiliary capillary is not conductive, and the throttling element is connected in series with the main capillary and the auxiliary capillary, which can increase the resistance of the throttling element.

Automatic, you can choose the cooling and heating mode by yourself, but it is selected according to the room temperature. If you automatically display 22 degrees, then the indoor temperature will be less than 22 degrees Celsius will be heated, and more than 22 degrees Celsius will be cooled. If the indoor temperature is very low and the air conditioner comes out after 5 minutes of starting, you need to find an after-sales service to overhaul it.

Do you think you can spend 3,000 yuan to be so advanced?? The landlord is funny.

In automatic mode, it will generally detect the room temperature, like your room temperature, it will generally heat up, but if the temperature sensor head is broken, it will give the wrong command. If you can use it, you don't need to repair it first, if it is within the warranty period, you can repair it.

If the indoor temperature is lower than 22 degrees, then it is possible that the indoor temperature sensor is broken, or the four-way valve circuit or four-way valve is broken.

Yes, if the room temperature is lower than 22, find someone to take a look, and pay attention to the heat source around the air conditioner, or it will not make the temperature detected inaccurate!

<> Why can't the air conditioner adjust the heating mode: 1. Plug in the power supply. The air conditioner light is on, indicating that the power is plugged in. An essential step.

2. Use the remote control to aim at the air conditioner and press the heating button, or press the mode until the word heating is displayed on the remote control. Note that the effect of the keys on the remote control is the same for different models.

3. Wait for 10 minutes and then adjust according to the temperature. The upper and lower parts of the remote control are plus or minus the temperature, adjust the temperature according to the comfort, press it if the temperature is too low, and press it if it is too high. Basically, the temperature of a season can be fixed after adjusting it once.

4. If the remote control shows "heating", and the temperature has been increased to 30 degrees Celsius and still does not feel the heat, it may be caused by the following reasons: the room space is too large, the doors and windows are not closed tightly, and the air conditioning channel is not smooth.

This answer is applicable to most of the air conditioning models of brands such as Midea KFR-26GW N8MJA3 &> Gree KFR-35GW NHA1BAJ.

<>1. Air conditioning capillary or check valve.

There is a problem. If the air conditioner does not heat due to this reason, the capillary tube or check valve should be replaced to solve the problem of the air conditioner not heating.

2. Lack of fluorine (refrigerant) in air conditioners.

Ask a professional to add fluoride (refrigerant) to solve the problem of air conditioning not heating.

3. Four-way valve for air conditioning.

Leakage. Replacing the Sibi pass valve can solve the problem of air conditioning not heating.

4. There is dust on the filter screen, so that the heat production in the machine cannot be brought out by the flowing air in time, resulting in insufficient heating production. The air filter of the air conditioner has accumulated too much dust, and the vents of the internal and external units are blocked by foreign objects. The function of the filter is to adsorb the dust in the air, if the dust is too much and not cleaned in time, the air circulation will be blocked, resulting in the reduction of the air outlet volume, resulting in the heat production in the machine can not be brought out by the flowing air in time, resulting in insufficient heat production.

What to do if the air conditioner does not heat due to this reason: cleaning the filter screen can solve the problem of the air conditioner not heating.

5. The outdoor temperature is too low. The outdoor temperature is too low to cause the air conditioner to not work normally, generally outdoors below zero, inverter air conditioner.

The outdoor is about 15 degrees below zero, and the mold grip can not be heated normally, so it may be that the outdoor is too low, the air conditioner cannot defrost, and the air conditioner cannot heat.

This answer is applicable to most of the air conditioning models of brands such as Midea KFR-26GW N8MJA3 &> Gree KFR-35GW NHA1BAJ.

The heating mode of the air conditioner is not running, and the other modes are fine, what is going on?

Hello boss, the heating mode of the air conditioner is not running, and the other modes can be used for the following reasons: the air conditioner is defrosting. The workaround in this case is:

The air conditioner runs for a period of time in the winter, and the machine stops blowing to perform the defrosting, at this time, the fan of the external unit does not rotate, and the compressor continues to work, and there will be hot air after the defrosting is completed. The outside temperature is too low, the frost is frequent, and all the heated shirts do not react. The workaround in this case is:

The air conditioner was adjusted to other modes, and the other modes did not defrost, so it was running normally.

The heating mode of the air conditioner is not running, and the other modes are fine, what is going on?

Hello, I am glad to answer for you: there are several possibilities for the air conditioner not to heat 1, the power is too small If the power of the air conditioner is too small, and the room is too large, this situation may not respond to the heating, it is recommended to replace the air conditioner with more power. Or improve indoor thermal insulation or reduce indoor area, such as closing doors and windows intentionally in the collapse gear, using partitions to reduce the area of air conditioning, etc.

2. Dust blocks the air outlet After the air conditioner has been used for a long time, dust will accumulate on the filter screen and the pipe of the air conditioner, and the dust will block the air outlet, resulting in a decrease in air volume and a reduction in heating effect, so the air conditioner needs to be cleaned regularly. 3. The outdoor temperature is relatively low If the outdoor temperature is too low, the outdoor air conditioner cannot be normalized and frosted, then the air conditioner cannot heat up. If the outside temperature is too low, it is not recommended to use the air conditioner as a heating button.

4. The voltage at home is too low The air conditioner cannot work normally in a low-voltage environment, which will lead to a decrease in the heating effect, so it is recommended to use the air conditioner after installing a voltage regulator.

Take Huawei Honor 10 as an example:

1. First click on the icon of the "Smart Remote Control" app on the desktop of your phone. Remember to use an infrared-enabled mobile phone to do this.

2. Then click on this page to select the brand of air conditioner you want to operate, and then click.

3. Then click on the two squares on the left side of this page, and click multiple times.

4. Then you can jump the mode of the air conditioner to the heating mode.

Notes:1. When using the air conditioner, it must be operated according to the actual situation.

2. In the case of not knowing how to operate, you must contact the industry personnel for processing as soon as possible.

An air conditioner without a heating mode cannot heat the air.

Only air-conditioners with heating and cooling or single-chilling air conditioners with auxiliary electric heaters have the function of heating and heating.

When the air conditioner is in heating mode, the indoor unit has an anti-cold air mode, in this mode, the indoor fan does not work temporarily.

When the air conditioner first starts heating, the system temperature is not very high, at this time, if the fan blows the air, the temperature is not high, and it will feel uncomfortable when it blows on the person's body, so the air conditioner has a thermostat on the coil of the indoor unit.

The indoor fan will only work when the temperature of the air conditioning system is above a certain value, a process that usually takes a few minutes.

When the air conditioner is in heating mode, the air conditioner compressor compresses the gaseous refrigerant into liquid refrigerant, which is at high temperature and high pressure, and then the liquid refrigerant is sent to the condenser, and the heat will be dissipated into room temperature and high pressure.

Summary. Hello, I am glad to answer for you, there are several reasons why the air conditioner cannot turn on the heating mode: 1. The most likely is the failure of the internal tube temperature sensor.

When the air conditioner is cooling, the internal fan will work immediately, and when heating, (in order not to blow cold air), the external machine will work first, and the temperature of the internal heat sink will reach more than 40 degrees (the parameters set by each brand are different), and there is a temperature sensor on the heat sink, which will provide a reference signal to the main board of the internal machine, and then the main control board will drive the internal fan to work and supply air, if the sensor is broken, it will not provide a signal to the main control board to drive the fan to work. So most likely is the inner tube temperature sensor barrier. 2. The system pressure is abnormal.

Due to the poor heating effect caused by the low refrigerant pressure, the heat sink of the internal machine has not been able to reach the air outlet temperature, resulting in the internal machine not getting the working signal and not working, so the low refrigerant pressure will also cause the internal machine to not work without air. 3. The main control board of the internal machine is faulty. Although the heat sink reaches the outlet temperature, the sensor provides a signal normally, and if the main control board of the internal unit is broken, it will not drive the internal unit to work.

Hello, I am glad to answer for you, there are several reasons why the air conditioner cannot turn on the heating mode: 1. The most likely is the failure of the internal tube temperature sensor. When the air conditioner is cooling, the internal fan will work immediately, and when heating, (in order not to blow cold air), the external unit will work first, and the temperature of the internal heat sink will reach (the setting parameters of each brand are different) more than 40 degrees, and there is a temperature sensor on the heat sink, which will provide a reference signal to the main board of the internal machine, and then the main control board will drive the internal fan to work and supply air, if the sensor is broken, it will not provide a signal to the main control board to drive the fan to work.

Therefore, the most likely thing is the internal tube temperature sensor barrier. 2. The system pressure is abnormal. Due to the poor heating effect caused by the low refrigerant pressure, the heat sink of the internal machine has not been able to reach the air outlet temperature, resulting in the internal machine not getting the working signal and not working, so the low refrigerant pressure will also cause the internal machine to not work without air.

3. The main control board of the internal machine is faulty. Although the heat sink reaches the outlet temperature, the sensor provides a signal normally, and if the main control board of the internal unit is broken, it will not drive the internal machine to work.

4. The air conditioner only has a refrigeration mode and no heating function; 5. If the remote control is damaged, you can test whether the remote control is normal by adjusting other buttons; 6. The distance is too far, and the general remote control cannot exceed the remote control distance of infrared; 7. When the indoor temperature has reached the heating temperature, even if the heating button is quietly opened, the hidden key but the temperature controller cannot close the circuit, and the air conditioner will not be able to heat the hole.

There are usually several possible reasons why the air conditioner's automatic mode does not heat up:

When the indoor temperature reaches the set temperature, the automatic mode will stop heating and choose to refrigerate or shut down to wait for the next adjustment.

Some air conditioner auto modes only provide cooling in the summer and not heating in the winter. This type of air conditioner switches to other modes that are suitable for winter use during the winter months, such as heating mode, dehumidification mode, or air supply mode.

Some air conditioners only have cooling and do not provide heating. This type of air conditioner is usually dedicated to the summer and cannot be used in the winter.

It should be noted that different brands and models of air conditioners will have different characteristics and performance, you can check the manual of the air conditioner or contact the after-sales service personnel for more detailed information. If you find that the automatic mode of the air conditioner is not working properly or there is a fault, please contact a professional maintenance personnel in time for inspection and repair.

The automatic mode of the air conditioner is a mode that automatically adjusts the cooling or heating according to the indoor temperature. When the indoor temperature is higher than the set temperature, the air conditioner will automatically cool down, and when the indoor temperature is lower than the set temperature, the air laughing number adjustment will automatically heat up. However, the air conditioner automatic mode is usually only suitable for cooling mode, not for heating mode.

This is because in cooling mode, the air conditioner can reduce the indoor temperature by blowing out the first air of cold bumps, while in the heating mode, the air conditioner needs to heat up the indoor temperature. If the air conditioner heats up in automatic mode, it will constantly turn on and off, which can lead to wasted energy and unnecessary wear and tear. As a result, the automatic mode of air conditioning is usually only suitable for cooling mode, not for heating mode.