The heating of Jinbei sea lion is not hot.

There are many reasons. First, touch the temperature of the inlet pipe and outlet pipe by hand. If the inlet water is hot and the outlet water is cold, most of it should be blocked by the warm air tank. Another possibility is that there is gas in the water tank, so the water can't circulate. It's best to step on the accelerator and check whether antifreeze is lacking when the car is cold. Then you have to change the thermostat to see if there is anything wrong with it! ~