I'm also not a repair professional, just a trained electronics and mechanical engineer of 25 years experience.

My 16830 had been showing error E20 (draining problem) for a few days on and off and the tumble drier was not doing it’s job very well at all, so this is what I have done to fix it, as it sounds that this fault may be similar to yours.
The fault (more like design fault) was that the condenser was blocked up with grey sludge from the drying process and this prevented the hot air from circulating around the drum during the tumble dry cycle.
The condenser box is a large clear plastic unit located on the left hand side if you view the machine from the rear.

Before you go any further I must advise that you UNPLUG THE MACHINE before starting, as MAINS 230V IS PRESENT ON EXPOSED POINTS inside the machine.
1. REMOVE THE MAINS POWER – VERY IMPORTANT as live parts are exposed inside the machine.
2. Remove the top – two screws on the top edge of the rear panel (8mm hex drive)
3. Release the mains cable clamp on the top edge
4. To remove the rear outer casing half - 11 screws have to be removed.

Four 8mm hex drive screws on the top left & right side.
One cross head screw on the inside holding the water inlet.
One screw 8mm hex drive on the left holding the blower.
Three screws on the rear base.
Two final screws – located behind white grommets half way along the left and right half side at the base.
5. Carefully remove the rear casing half.
6. The condenser box is located on the left as viewed from the rear of the machine (see picture).
7. Disconnect the top horizontal pipe from the main condenser box and soap tray.
8. Release the bottom of the condenser box by freeing the clip.
9. Carefully lift the condenser box and withdraw it from the blower.
10. Clean it out – yuck what a job....
11. Refit in reverse order and test.
This fixed my machine a treat – clothes are dry, smell nice and we use less electricity – I would say a success!!

I am not a repair professional. I am just a 78 year old
man who has been making his own repairs for about
50 years. Therefore the washer ID doesn't mean
much to me. It's been about 55 years since I had
experience with front load washers. However I can
suggest you go to www.applianceaid.com where
they have very good trouble shooting and repair
information on front loaders. I think you'll find what
you need there. You can search for the meaning of
the error code on the site.Don't worry about the
timer, they hardly ever go bad.Good luck with it.
If I have helped you, please rate my advice on fixya.