Is the heating not hot when the weather is good?

when the weather is good, the heating won't be hot. The purpose of heating is to compensate the heat dissipation of the building and maintain the relative stability of the room temperature. Heating will automatically adjust the supply and return water temperatures according to the weather. The colder the weather, the higher the water supply temperature, the greater the circulating water flow and the hotter the heating. When the weather is fine, the water supply temperature decreases, the circulating water flow becomes smaller, and the heating is not hot. So the heating is not hot when the weather is good.