1. After the hot car, check the return water condition of the return pipe at the upper end of the antifreeze water storage tank. If the return water is not smooth or blocked, the water temperature will be too high.

温馨提醒：在维修中不要盲目拆件和换件。

Warm reminder: don't dismantle and replace parts blindly in maintenance.

2、检查冷凝器与水箱之间的灰尘是否过多，用高压气彻底清洗，保证水箱和冷凝器有良好的散热性能。

2. Check whether there is too much dust between the condenser and the water tank, and thoroughly clean it with high-pressure air to ensure that the water tank and the condenser have good heat dissipation performance.

温馨提醒：平时注意擦拭冷凝器与水箱之间的灰尘。

Warm reminder: usually pay attention to wipe the dust between the condenser and the water tank.

3、在热车时，检查水箱上下水管的温差，如果温差太大，需要检查节温器的开度和水泵是否有转速丢转的故障。

3. When the car is hot, check the temperature difference between the upper and lower water pipes of the water tank. If the temperature difference is too large, it is necessary to check the opening of the thermostat and whether the water pump has speed loss.

温馨提醒：水箱上下水管的温差不能太大。

Warm reminder: the temperature difference between the upper and lower water pipes of the water tank should not be too large.

4、由于防冻液的添加和更换不规范，会造成发动机水道和水箱提前堵塞，出现水温高的现象。防冻液两年更换一次，在更换和添加时必须使用原厂配件。

4. Due to the non-standard addition and replacement of antifreeze, the engine water channel and water tank will be blocked in advance, resulting in high water temperature. Antifreeze should be replaced every two years. Original accessories must be used when replacing and adding antifreeze.

温馨提醒：发动机冷却系统内加入水后，或者加入的防冻液的浓度超过了60%以上，都会造成水温过高。

Warm reminder: when water is added into the engine cooling system, or the concentration of antifreeze is more than 60%, the water temperature will be too high.

5、空调系统中高压端高压力过高;空调制冷剂或空调制冷润滑油加注过多;内部自调试空调压缩机的自调功能失灵，造成高压过高;还有空调冷凝器的堵塞，以上故障都会加大发动机的负荷，消耗冷却系统的散热性能，导制水温过高的故障发生。

5. In the air-conditioning system, the high pressure at the high-pressure end is too high; the air-conditioning refrigerant or the air-conditioning refrigeration lubricating oil is filled too much; the self-adjusting function of the internal self-adjusting air-conditioning compressor fails, resulting in the high pressure; and the air-conditioning condenser is blocked, which will increase the load of the engine, consume the cooling performance of the cooling system, and cause the high water temperature fault.