There is also a filter screen in the toilet water supply device, which has been blocked by too much scale for a long time and tap water can't get in.

Solution steps:

1. Close the valve on the hose connecting the water inlet of the water tank, otherwise it will be easy to spray water in the later operation. Then flush the toilet to drain the remaining water in the water tank.

2. Next, look under the toilet along the water hose. There is a hexagon nut to connect the hose with the water replenishing device (a vertical plastic pipe) in the water tank. Turn the nut with a wrench, and then look up at the position directly above the nut. There may be a nut in the same position, which can also be rotated and has the same function. After two processes, the water replenishing device can be taken out of the toilet.

3. Then, take off the water replenishing device and see a small square column in the middle of the inner tube. Pull it out with needle-nosed pliers, and you can see that the square column and the filter screen are integrated and come out together.

4. You can use a toothbrush to clean the filter screen, or you can use a scale remover to clean it.

5. After the filter screen is cleaned, put it back as it is.

There is no water in the water tank.

The water tank fittings in the bathroom are divided into three parts. The first is that the drain valve is directly below the button, and the second is that the water inlet valve is the part connecting the hose outside the water tank, generally next to the drain valve. The third part is divided into full-line buttons and half-line buttons.

Solution steps:

1, open the main valve, that is, the angle valve, and see if there is running water.

2. Open the water tank cover and observe whether there is water on the water tank. Whether the piston can be plugged. If you can't stop it, it will leak. If the water tank is not satisfied and the switch can't reach it, you won't fill it.

3. Cover the toilet seat and see if the button can touch the water inlet valve. If so, it is very important to adjust the position of the inlet valve and see if the buoy or floating ball of the inlet valve can move freely up and down. If it gets stuck, the water can't get in. Usually, there is an adjustable cross hole on the buoy. Twist it clockwise. If the floating ball is suspended without water, the water inlet is blocked.