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I finally found the metal to have a go this weekend! I took a look on a well-known Internet search engine for a video to remind me of the process and found a video where the presenter actually removed the sump and fitted it with the sump removed. Since I had the machine mostly in pieces already, I just had to invert the machine and pop the base off. I think I’m glad that I did that. The seal seems to be a little larger than the actual sump and is a bit of a pita to fit. I got it in and refitted the sump and them reassembled the machine. After a couple of test runs, everything seems to be dry underneath! The seal did seem to be OK and I do have to wonder if it was the replacement gasket or just cleaning and refitting the sump that seems to have fixed the issue.
I think I’ll give it a few more test runs before I commit to refitting the sides and lid and sliding it back into position!
The sump usually warp relative to the tank base and it is a faff to do. I had a look on the Bosch spares site to try to suss out the tank but although there is a picture, as in the diagram, the tank is not a listed part so I`ll ask you since you are there! So the question is when you open the door and remove the lower basket is the plastic filter as one unit fitted into a base of the tank that is plastic or is the tank base s/steel?
If the tank base is plastic this is what can happen which is mega common = E15 flood mode: looking at the front of the machine the r/h/side where the s/steel goal post part of the tank comes down to imbed itself into the plastic tank`s base. That plastic tank area warps allowing water to splash over the top of that pcb protection sheet. It is all very sometimes it will, sometimes it will not. There is a repair kit consisting of 2 metal bars to push the warped area straight and to keep it straight.
The sump warping is fairly common but can be a real bitch when it happens.
All I`m pointing out are two, we`ll say, common faults that will cause the UNDER base to flood. Usually if it is a sump flood it happens very quickly as in 1 to 3 minutes. The side warpage issue usually takes say 12 washes to cause a problem but it all varies.
“to get one E code might be considered a misfortune but to get two looks like carelessness”. Very good!! With a Bosch dishwasher they sometimes come in 3`s.
Just so you are kinda forwarned my record is an infamous just under 3 mins that a brand new heat pump lasted until the heater went pop and there was no leaks dripping nothing like that. So hold on to your receipt for the heatpump just in case.
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