1. Cause of failure: the water outlet is stuck by foreign matters: especially if something long gets stuck at the water outlet of the drain valve, clear it. (Especially the excessive head of the binding belt) If the sink is dirty

Treatment method: clean and remove the foreign matters and scale in the water tank.

2. Fault cause: the drain valve is stuck

Solution: Clean the chassis and manually open and close the drain valve several times. If it still fails, it needs to be replaced.

3. Fault cause: the overflow port of the drain valve leaks

Treatment method: If the water level is too high, lower the height of the floating ball of the inlet valve and control the water level below the overflow of the drain valve. If the float of the inlet valve has floated to the highest position and cannot stop the water, the inlet valve needs to be replaced.

4. Cause of failure: the float ball of the inlet valve is stuck by the wet curtain,

Treatment method: adjust the angle of the inlet valve to make the floating ball face the air duct, so that it will not be stuck by the wet curtain.