Solution:
After the water pump pumped the water to the drinking tank, the water level sensor in the machine triggered the water shortage pump to stop working. After the water outlet stopped working, the water outlet would flow back. The water level sensor checked that the water level was normal, and the pump started again. In this case, you can add water to the water tank normally.
After the water pump pumped the water to the drinking tank, the water level sensor in the machine triggered the water shortage pump to stop working. After the water outlet stopped working, the water outlet would flow back. The water level sensor checked that the water level was normal, and the pump started again. In this case, you can add water to the water tank normally.