What should I do if the BYD FO heater is not hot?
Replace car coolant.
The coolant is called antifreeze, and it is the source of hot air for your car's air conditioner. Its principle is different from that of household air conditioners. The automobile warm air circulation is a parallel pipeline in the small engine coolant circulation pipeline. The pipe is connected to the heater box.
The blower blows the heater box to generate warm air. That's what warm air in an air conditioner does. A lack of coolant in the cooling system is the most common and easiest to fix problem that causes warm air.
How to replace car coolant:
1. Before changing the coolant, be sure to wait 10 minutes after the vehicle is turned off. After driving, the coolant temperature is very high and it is easy to burn yourself.
2. Use a jack to lift the vehicle.
3. Use a wrench to unscrew the screws on the bottom shell of the water tank, and use a waste liquid basin to receive the old liquid.
4. Cover the expansion tank cover with a thick towel, slowly loosen it until the air pressure is exhausted, and then completely remove the tank cover. Use a compressed air blow gun or a thick towel to pressurize the water inlet of the expansion tank and remove it from the engine block as much as possible.
5. Add demineralized water and let it idle for 5 minutes to fully clean the inside of the cooling circulation system.
6. Add new antifreeze to the upper limit of the water level.
7. Idle for 5 minutes, then observe the scale line on the antifreeze bottle and fill it up.
Extended information:
Precautions for using car heaters:
1. Do not turn on the heater immediately
Because in winter, the car When the engine has just started, the water tank temperature is still very low. Turning on the air conditioner heater will not only not quickly increase the temperature inside the car, but will also increase the burden on the engine.
2. Do not blow directly on your face
Being exposed to dry hot air on your face for a long time can easily accelerate skin aging.
3. Don’t adjust the temperature too high
4. 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 evaporator In rainy weather or when the air conditioner is not used for a long time, mold will form on the surface of the evaporator, seriously polluting the air in the car.
5. Pay attention to ventilation when turning on the heater for a long time
When turning on the air conditioner and heater in the car for a long time, remember to perform appropriate ventilation, otherwise in a closed environment , heat exchange occurs continuously 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.
6. 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.
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