The solar water pump cannot pump water, but just moans. The water pump may be empty or contain gas.
Suggestions:
1. First make sure there is no problem with the capacitor.
2. Check if there is air in the water inlet pipe and pump body. If the water pump is not filled with enough water before starting, the pump cannot idle.
3. Check the pump inlet and outlet valves to see if the valve cover is damaged and if the valve packing needs to be squeezed.
4. There may also be a problem with the booster pump.
5. Check if there is a problem with the bearing.
6. Turn on the machine and check if the motor can reach speed. The motor loses its magnetism due to burned windings, changes in the number of winding turns, wire diameter and methods ofwiring during maintenance, or factors such as failure to completely clear the fault during maintenance will cause the water pump speed to change.