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Anonymous users2024-01-24Reason: The floor drain is not equipped with a water storage elbow, and if the floor drain is not a water storage and odor-proof floor drain, there will be a peculiar smell after a long time.
Solution: Redo the floor drain and buy a floor drain with a water depth (the construction is more cumbersome, it is recommended to ask a hydropower master to come over).
It may be that the main drainage pipe is blocked or blocked, as long as your house can be flushed down, you don't care.
It may be that your floor drain has not been used for a long time, and the water seal has evaporated, and the sound of pouring some water into the floor drain will be gone.
This is normal, because, in general, the drain pipe of the floor drain is on the drain pipe of the toilet, and when the toilet flushes, there will be air pressure in the pipe, so it will appear as you said.
1 The negative pressure of the pipeline may be large.
2 Possible clogged pipes. >>>More
The toilet floor drain is backwater, which means that it is not a problem of clogged toilets, because if you look for a blockage in the future, you can use a pipe dredging machine to dredge the sewer main.