stewieb

Hi I done a water change and now my rcd is blowing. When Ive done some testing and disccont the heater plug the tubs starts and pumps work so it apppers to be something to do with the heater. One thing I did note when I un plugged the heater the plug was a little grease is this correct and could this be the cause, if not what else should I try? Many thanks

Hi All, New to all this so any help would be really appreciated The issue I'm experiencing I did believe was due to an airlock, however after further investigation cracking pipes flushing with horse and various other test I don't believe this us the case. I now believe it due to the circulation pump not taking in enough water in, as when there is two much water in the tub I over filled by mistake, the circulation pump work fine. I also found if I removed water to the correct level and people in the tub which increases the water mass the flow errors crease. This is after removing the air from the pump. Once the people are out of the tub the pump pulls water however not enough, so air builds up and the flow errors reappear. Thanks in advance for any help. Stew