I have a comby boiler Glow worm 40 energy saver and the condensation container does not evacuate the water. As you can see in the picture the right container fills up and once is full the left overflow container fills up and needs to be emptied regularly. I have tried to take it out but the screws are rusty. I assume it is just dirt but I have sticked a hose through the hole in the right container to suck the water excess and
It empties quickly but then it keeps doing the same thing over and over again. Any ideas on how to fix this?

It empties quickly but then it keeps doing the same thing over and over again. Any ideas on how to fix this?
