07 Prema, running at high speed is not cool, running at low speed is cool???

Check the air conditioning system, maybe the condenser is dirty, the refrigerant is less, and the air conditioning filter is blocked ,..

Refrigerant leaks. (It is manifested that the internal and external machines are working, and the compressor is also working, but it is ineffective).

The compressor capacitor is damaged or defective, causing the compressor to not work. (The phenomenon is similar to the above, but the compressor does not rotate and overheats).

The resistance value of the temperature sensing head at room temperature changes, resulting in the air conditioner not working. (The phenomenon is the same as when the air conditioner stops after reaching the set temperature).

Bad remote control or bad air conditioner receiver. (Manifested as no reflection of the air conditioner when it is turned on, or it does not work from time to time).

Four-way valve (single chiller does not have this failure) or compressor high and low pressure string, air conditioning works but has no effect. (The phenomenon is the same as the first one).

The failure of the control panel of the internal or external unit of the air conditioner causes the air conditioner to not be refrigerated. (Manifested as no reflection when turned on or the air conditioner is messed up).

The power supply of the air conditioner is reversed. (This failure occurs in a small number of air conditioners, usually at the time of installation).

The internal or external fan is damaged (the capacitor is more broken), and the external fan is damaged by the high exhaust temperature or high voltage protection. If the fan of the internal unit is bad, the internal machine is frosty, the external unit has been working, and the internal machine will condense ).

See if the compressor electromagnetic clutch is slipping.

Check to see if this is caused by the external circulation.

It shows that the heat dissipation of the air conditioner condenser (radiator) of the car is not very good.

Hello, this should be the reason why you turned on the outer circulation, see if the light is on or off.

This is best to check the compressor of the air conditioner to see if it is a problem with the compressor that is causing these problems.

You check if the outer loop mode is on, and you can choose the inner loop mode to try.

Hello, it may be caused by a lack of power, look at the engine carbon deposit.

It may be caused by a lack of power, and you need to check the compressor to see the carbon deposits in the engine.

Check the compressor, heater, radiator for the problem.

Go to a car repair shop or a decorating shop to check the amount of freon, he is the key to air conditioning and refrigeration. If it's less, add it.

The location of the radiator of the car air conditioner.

There is no center console, and the driver's seat on the passenger seat, and behind it.

Normally, turning on the air conditioner will affect the power.

Hello! This is the reason for the lack of power, and you need to give more oil than when you don't usually turn on the air conditioner, which can alleviate this problem a little. Hope.

First of all, look at whether it is refrigerated, and if there is no problem with refrigeration during operation, it is not a problem with the compressor.

Refrigeration, no air, should be the problem of the fan motor.

It should have nothing to do with how long you walk, it must be, your air conditioner compressor is broken, working intermittently, and it will not turn at all in a few days, look at the compressor, not a new one.

Hello, this one is generally a compressor failure, or a lack of refrigerant, if my answer is helpful to you, please set it to.

It's time to wash the throttle, and there may be serious carbon deposits.