What should I do if the heating switch of Wuling Light van still does not work well after being turned on?

If the car heater is not hot, you can check the following places:

1. The cooling system is short of coolant

The coolant is commonly known as antifreeze, and the warm air of the car air conditioner is insufficient. From this, the principle is different from that of household air conditioning and heating. The automobile warm air circulation is a pipeline connected in parallel to the small engine coolant circulation pipeline. The pipeline is connected to the warm air water tank. The blower blows the warm air water tank to produce warm air. This is how the air conditioner warm air comes. Lack of coolant in the cooling system is the most common and easiest to solve fault that causes the heater to not heat up.

When designing the engine cooling system, engineers will give priority to engine heat dissipation, and then the normal operation of the warm air. When the coolant is insufficient, the coolant will be given priority to circulate in the engine. At this time, there is no "water" in the heater circulation pipe, and most of the heater water tank is air. At this time, the air conditioner heater is naturally not hot.

2. The heater water tank is clogged

The structure of the heater water tank is actually a reduced version of the engine water tank radiator. There are many small heat dissipation pipes inside, which are the same as the water tank radiator. It is easy to get clogged inside. When the inside of the heater water tank is clogged, the coolant flowing through becomes slower, the flow becomes smaller, the heat is insufficient, and the air conditioner warm air is naturally not hot.

3. Thermostat failure

A common failure of the thermostat is that it cannot be opened, but the reason why the heater is not hot due to thermostat failure is that the thermostat is turned off. If not, it is commonly known as the thermostat is always open. After the thermostat is normally open, the coolant circulates widely from the engine idling. If the water temperature is low for a long time in the northern winter, the air conditioning warm air will naturally not be hot. It can also be clearly seen from the water temperature gauge that the needle is significantly lower than the normal scale.

Extended information:

Notes:

1. Pay attention to ventilation when turning on the heater for a long time

When staying in the car for a long time When turning on the air conditioner and heating, remember to perform proper ventilation. Otherwise, in a closed environment, heat exchange will continue to occur during breathing, which can easily cause air stagnation. Opening the windows for ventilation can remove some of the dirty air in the car and relieve the symptoms of chest tightness.

2. Warm air is easy to breed bacteria

If the warm air is turned on for a long time, it is easy to breed a large number of bacteria. Therefore, we must prevent the generation of wet mist. It is recommended to park the car Turn off the heating for the first few minutes and turn on the natural air for a while while the external circulation is on to ensure that the air conditioning system is relatively dry.

3. Don’t smoke

Smoking when the air conditioner is turned on will cause a large amount of amines and nicotine in the smoke to adhere to the surface of the evaporator. In rainy weather or when the air conditioner is not used for a long time, Mold will appear on the surface of the evaporator, seriously polluting the air inside the car.

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