Open the toilet lid when there is no water in the toilet, and check whether the floating ball sinks to the bottom when there is no water in the water tank. If the water is still on it when there is no water, it means that the floating ball is broken and the water inlet has been closed because it can't sink, so there is no water. You can also check other reasons, whether the triangle valve is in the open state, remove the triangle, and check whether the end connected with the internal line in the wall is blocked by the raw material belt, whether the triangle valve valve core is open and closed normally, and whether the water pipe is unobstructed. Just a few things are the same.
2. Turn off the valve on the hose connecting the water tank when there is no water in the toilet, or it will spray water later. Flush the toilet again to drain the remaining water in the water tank.
3. When the toilet is not full, use the button to open the lid, and there is a float in it to see if it is stuck.
4. There is no water in the toilet and little water in the tap, which is a problem. No matter how good the toilet water replenisher is, there is a filter screen inside, which has been blocked by too much scale for a long time, and tap water can't get in. As long as the filter can be removed and cleaned. Solution: Clean the filter screen with waste toothbrushes and the like.