How is it that the wall-hung boiler is sometimes hot and sometimes not hot?

The water pressure is unstable and the pressure is insufficient. Firstly, it is determined whether the water filling valve of the wall-hung boiler is closed tightly, whether the floor is too high, and whether the tap water pressure is too low or unstable, which will cause water pressure loss. If this is all right, that's where the water leaks.

The temperature setting of the wall-hung boiler is too high. When the heating temperature exceeds the set temperature, the wall-hung boiler will stop heating until the water temperature drops to a certain temperature, so it will feel cold and hot at last.

There is also a reason for the wall-hung boiler itself: the phenomenon of inferior "casing machine" in wall-hung boiler products is unique. Because the sleeve heat exchanger is installed, sanitary hot water is generated in the tube heat exchanger integrated in the main heat exchanger, and the sanitary hot water is unstable.

Extended data:

When the wall-hung boiler system is blocked, the water circulation will stop, and then the water exchange temperature in the main heat exchanger of the wall-hung boiler will soon exceed the set temperature, but the water will not circulate normally, even leading to the failure of the wall-hung boiler at high temperature.

Solution: Clean the wall-hung boiler system regularly to find out the internal blockage and dredge it, which can also prolong the service life of the wall-hung boiler.

There should not be too much air in the wall-hung boiler system. Too much air will make the temperature of the heat exchanger rise to a very high temperature quickly, and even reach the set temperature in a short time. Exhaust the wall-hung boiler before use. It is recommended to exhaust once every 2 months or so.