When the thermostat is low, the water in the warm air tank will not flow.

Flow. At present, the main thermostat used is paraffin thermostat, which uses the principle that paraffin expands with heat and contracts with cold to control the circulation mode of coolant. When the cooling temperature is lower than the specified value, the refined paraffin in the thermostat temperature sensor is solid, the thermostat valve closes the passage between the engine and the radiator under the action of the spring, and the cooling liquid returns to the engine through the water pump and circulates in the engine.

When the warm air is not used, the water in the warm air tank does not flow and is not connected with the engine cooling water. When it does not work for a long time, it is easy to cause blockage and leakage at the joint, which will directly lead to the failure of the engine cooling system and more likely to lead to engine safety hazards. Therefore, we must pay attention to the inspection and maintenance of air conditioners in winter.

Thermostat is an automatic temperature regulating device, which usually includes a temperature sensing element. It turns on and off the flow of coolant by expansion or contraction, that is, it automatically adjusts the amount of water entering the radiator according to the temperature of coolant, and changes the circulation range of coolant to adjust the cooling capacity of the cooling system.

Under normal working conditions, the air conditioner heats up because of circulation. If it is cold, it means that the warm air tank has been blocked, and the cooling liquid cannot circulate effectively, which leads to the phenomenon that the cold air blown by the blower is not heated by the warm air tank, which leads to the warm air not being hot.