ok today i did a waterchange and when i turned both the fx5s on one was ok and the other was not.
basicaly it is pumping like someone is turning a switch on and off constantly.
now if i close all the valves to the pipework and seal the unit from the tank it pumps fine, i also stripped it and it was pumping fine but as soon as the outlet is opened it starts again.
one thing i noticed is that when it is turned on it stays on and does not turn off and reset itself after 2 minutes as it should to expel the air.
does anyone have any thoughts or has anyone had the same problem.
basicaly it is pumping like someone is turning a switch on and off constantly.
now if i close all the valves to the pipework and seal the unit from the tank it pumps fine, i also stripped it and it was pumping fine but as soon as the outlet is opened it starts again.
one thing i noticed is that when it is turned on it stays on and does not turn off and reset itself after 2 minutes as it should to expel the air.
does anyone have any thoughts or has anyone had the same problem.