How to deal with the problem of water not entering the toilet tank: 1. Open the main valve, also called the angle valve, to determine whether there is tap water. 2. Open the water tank cover and observe whether water is filling the water tank. Can the piston be plugged? If it is not plugged, it will leak. The water tank will not be full and the switch cannot reach it, so the water will not flow. 3. The toilet water tank accessories are divided into three parts. The first is that the drain valve is right below the button, and the second is that the water inlet valve is the part of the connecting hose outside the water tank that is usually next to the drain valve. The third part is that the buttons are divided into full row buttons and half row buttons. 4. Cover the toilet lid and check whether the button can push against the water inlet valve. If so, adjust the position of the water inlet valve and check whether the float or ball of the water inlet valve can move up and down freely. This is very important. If it's stuck, water won't be able to get in. Generally, there is an adjustable cross eye on the float. Turn it clockwise

Twist it and see. If the float hangs in the air when there is no water, it means it is broken and blocking the water inlet. 5. Fill the water tank with water and see if the float floats freely. If you can solve the problem of water intrusion. Next is the drainage problem, which is also the flushing problem. Check to see if the plug, also called the float, in the water tank is damaged. Whether the connection between float and button is loose. If it is loose, tighten it once to check whether the button is elastic. If water enters the spring over time, it will easily rust.