Manual water filling generally does not have an anti-reflux function, so it is not surprising that this phenomenon occurs. Because the tap water pressure is low or the tap water is cut off, then you turn on the solar water supply manual switch. Water from the solar water tank returns to the tap water pipe along the manual water supply switch.
I hope to adopt it, thank you
Whose water meter should be used by multiple solar water heater users?
If the tank water supply cannot be filled with water automatically or manually, please explain the water supply first. There is no problem with the pipes and hardware. Now let's distinguish the actual use. If the water temperature in the water tank is too high, above 95 degrees, the meter will enter the system. explosion-proof pipe protection function and cannots access the automatic water filling function. You can fill the water manually if there are no problems above, there is a problem with the program settings. Keep pressing the counter setting button to enter the counter. Setting options. At this point, see what the set water fill time and water level look like. Set the water level below. The actual water level will not increase. If you have further questions, please contact the instrument manufacturer's after-sales service hotline: 0573-88180000.
Check the water meters of each house separately.
There is a way to have solar water heating equipment shared by multiple users. This method involves installing a hot water meter on each hot water line connection of the solar water heating equipment entering each user. PermettPlease each user to use hot water as well as cold tap water.