Lights 1,3 and 4 is an F11 error code which is a pump fault.
If you have a multimeter you need to test the pump for contonuity. If its faulty then it will need to be replaced.
But if the pump is fine its going to be a faulty control board.
To be honest if you get this error code its usually a control board fault here.
Take the back cover and there you will see the control board on the left hand side.
Take this off and inspect it and see if theres any burning on there. Look in the bottom right corner as this is usually were they blow.
So check them out and see what you find. If you need anymore info just get back to me.