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Two possibilities:
1.The problem of the toilet, the size of the toilet trap is not sealed with water;
2.Go to the floor below to check the drain trap problem, it is very likely that the development cut corners and did not install the trap, so there is a problem, and this problem is more likely.
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The reason for this may be on the roof of the building, the highest end of the general sewage pipe is open, and the negative pressure of the pipe has been prevented, and the neighbor on the roof of the building may close the pipe, which leads to such a situation.
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Fainted, I took a cursory look and thought it was a fountain :(
Adjust the float valve to lower the water inlet level.
First of all, you can open the button cover, check if the float is stuck inside, and if so, reset it. Check whether the hose connecting the water tank is blocked, you need to close the valve in advance and then flush the remaining water in the tank before checking, if it is, you can call the master to replace it. You can check if there is an element in the tank that looks like a water cup is stuck, and if so, reset it. >>>More
Hello! Maybe it's a blockage in the main sewer pipe.
If the toilet in your own house is clogged, you can tie a cloth to the cleaning brush and poke it forcefully and quickly. >>>More
What should I do if there is water in the toilet but I can't press it? A little trick to solve the problem, let's take a look!
Let's go and see if the grey water meter is used up.
Lift the toilet lid and see if the button inside is pressed underneath, you can press it with your hand. >>>More