The reason why warm air is not hot:
1. Insufficient antifreeze.
Insufficient antifreeze will affect heating. Antifreeze is a heat-conducting medium for automobile heating. After the antifreeze that absorbs the heat of the engine enters the heater tank, it will heat the heater tank, and the wind will be blown out through the heater tank, which is hot air.
Check whether the antifreeze is within the normal range.
2. The heater water tank is blocked.
The warm air tank is blocked, and the antifreeze cannot enter the warm air tank or the amount is small, which will affect heating.
It can be solved by cleaning the warm air tank.
3. Thermostat failure
Thermostat is a tool for automatically adjusting temperature, which is similar to the valve of our faucet. By changing the circulation range of water, the cooling capacity of the cooling system is adjusted to ensure that the engine works in a suitable temperature range.
If the thermostat fails, the main valve cannot be opened, and the antifreeze cannot dissipate heat through the water tank, which will lead to overheating of the engine.
On the contrary, if the main valve is not closed and kept open, the water tank will always emit antifreeze, resulting in low engine water temperature, insufficient warm air temperature or prolonged heating time.
4. Check the hot and cold windshield, check whether the air conditioner is set to the hot air file, and check whether the air conditioner switch is turned on. There is no need to turn on the air conditioner switch for heating.
There are two main reasons why the vehicle heating system is not hot: the control mechanism of the engine cooling system and heating system is poor. It is recommended to find a professional to repair it.
Extended data:
Don't turn on the air conditioning fan immediately when the car starts, because the engine water temperature hasn't come up yet, and turning on the air conditioning at this time will blow out a little heat inside.
You should start the engine to warm up first. After the engine temperature indicator lamp reaches the middle position, first turn on the heating air conditioner, and set the air circulation to external circulation, so that the cold air in the car can be discharged outside the car. After waiting for 2-3 minutes, set the air circulation to internal circulation.
Do you need to turn on the air conditioner in winter?
The heat source of automobile air conditioner is provided by engine coolant. Two water pipes are led out from the small circulation loop of engine coolant and connected to the heating water tank inside the air conditioner assembly to provide heat source for the air conditioner heating system.
Using air-conditioned warm air in winter will neither affect power nor increase fuel consumption. A/C switch controls the compressor, and some models only have refrigeration function in order to save cost.
Therefore, you can't turn on the A/C key in winter, and some models of compressors can only refrigerate, which will only be counterproductive.
Phoenix net-the correct use of automobile warm air in winter