Why is the warm air volume small? The small warm air volume may be caused by the blower speed being too low, or it may be caused by the pipe being clogged. When this happens, you should check the blower and air duct. If the blower fails, it can only be replaced. If the air duct is dirty, you can clean it.
The heating principle of the car air conditioner is very simple. When heating, the high-temperature coolant in the engine will flow through the heater water tank. At this time, the wind blown by the blower will also pass through the heater water tank, so that the car air conditioner The air outlet can blow out warm air.
The heater water tank is a heat exchanger. This component is very important for the car air conditioner. Without this component, the car air conditioner cannot heat.
The refrigeration principle of automobile air conditioners is also very simple. During cooling, the engine will drive the compressor to run. At this time, the compressor can continuously compress the refrigerant and transport the refrigerant to the evaporation box. The evaporator box can continuously expand and absorb heat, so that the refrigerant can cool the evaporator box. The cooled evaporator box can cool the wind blown by the blower, so that the car air conditioner outlet can blow out cold air.
The refrigerant used in most car air conditioners is r134a. This refrigerant needs to be replaced regularly. If you try to add it without replacing it, the cooling effect will become worse and the cooling speed will slow down.
Car owners cannot replace the refrigerant by themselves. To replace the refrigerant, they need to go to a professional store to find a professional using professional tools.
What is the reason why the heater is not hot?
1. The heater water tank is clogged:
It is common for the car heater water tank to be clogged when using the heater in winter. One of the faults is that the car's heater water tank is a reduced version of the engine water tank radiator. Like the water tank radiator, it is easy to get clogged, so you need to pay attention during use. If the heater water tank is clogged, the coolant speed will change. If it is slow, the flow rate becomes smaller and the heat is insufficient, resulting in the warm air not being hot.
2. The cooling system is short of coolant:
Coolant is an indispensable medium in the cooling system. During use, the warm air circulation is in the small engine coolant circulation pipe. A parallel pipeline is connected to the heater water tank. If the coolant is insufficient, the heater will not be hot, which is a relatively easy fault to solve.
3. Thermostat failure:
The most common failure of the thermostat in the heating system is that it cannot be turned off. During use, the water temperature will be low. If the water temperature is too low, the warm air effect will naturally not be obvious. If the water temperature is found to be too low, it needs to be dealt with in time to avoid excessive fuel consumption and increased wear due to too low water temperature.
Note: When the seasons change, car owners need to check and maintain the car's heating system to avoid odors during use and affect normal use. In particular, the pipes must be cleaned well. Failure to use it may breed bacteria and affect your health. (Pictures/Text/Photos: Q&A Calling the Beast) @2019