Your water heater is made of glass vacuum tubes. The water tanks of this type of water heater cannot withstand the pressure. If the pipes are blocked by a small object, hot water will not come out.
First, eliminate the pipe problem. It's easiest to go straight up to the roof, remove the hot water pipe connected to the room, and see if there is any water coming out of the hot water pipe outlet. of the water tank. If there is water, it means the hot water pipe is installed. There is a problem with the water pipe. It is possible that it is clogged (because the pipes installed by many manufacturers are made of PPR plastic pipes). connectors are heat welded and soldered. Many novice masters are most likely to cause blockage. Of course, some masters deliberately say that this is an air blockage, if I ask you to replace the aluminum-plastic pipe, I willwill bleed). if no water comes out, there is a problem with the water tank, and ask the manufacturer to replace it directly