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It should be that the momentum is not enough, or something is stuffed, all through.
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On the 18th floor, you look at where the water level of the lower tank goes, it may be too little, at least 6 liters.
The two sewer pipes in the bathroom are connected to the washbasin and toilet respectively, which are sewer. >>>More
Every day before going to bed, go to the railing and look out for a while, look underneath, and sober yourself up. >>>More
1. All of this is a typical siphon negative pressure phenomenon. If you want to solve it, go to your property. He needs to install a valve on the tank.
This is between your home and the first floor, excluding the sewer on the first floor, the flow of water is not smooth, there is a blockage, the large flow of the toilet, resulting in blockage and regurgitation, just find a professional master to get through, really help you look forward to adopting,
It doesn't have to be floor heating, it may also be that there is a leak in the kitchen, and the waterproofing is not done well, and it has leaked to the dining room. Look at the water pipes, as well as the sewer pipes, to see if there are any traces of water on the kitchen floor.