Check the hot and cold windshield to see if the air conditioner is set to hot air.
Check whether the electronic fan temperature control switch is turned on.
Check the water temperature thermostat.
If the above investigation is normal, there may be two reasons for not being warm: first, the engine cooling system is abnormal; One is that the control mechanism of warm air is not easy to use.
Principle of automobile warm air:
When the engine coolant temperature is high, the coolant flows through the heat exchanger in the heating system, and the air sent by the blower exchanges heat with the engine coolant. After the air is heated, it is sent into the car by the blower through various air outlets.
Warm air on the steps:
After the car starts for about 8- 15 minutes, the water temperature rises to normal temperature, and the warm air can be turned on at this time.
Adjust the cycle mode of air conditioner to in-vehicle cycle.
Switch to warm air mode.
Adjust the air conditioning gear to suit the gear, and adjust the wind direction of the air outlet. The direction of warm air blowing is generally forward, blowing at the foot.