Bosch Maxx WFL 2260 - The conditioner tray doesn't always empty. Outflow from tray appears clear and running.

SOURCE: Conditioner tray won't empty

i assume the detergent drawer is really clean especially the conditioner part.fault may be that the roof of the detergent box (the part the drawer goes into) is clogged. open drawer half-way at point conditioner should be taken and check if there is a spurt of water into the conditioner section. if not push a hairgrip or similiar into the holes in roof of box as you may have a blockage there.

SOURCE: There is always water left in the ''conditioner'' tray

replace dispensor valve

SOURCE: My dispensing tray always has water in the conditioner section which I have to empty every time I use the machine

Remove the dispensing tray and thoroughly clean it. Use a bottle brush. You may already have done this. If that fails the network above dispensing tray may be fouled. This should then be cleaned. As it is fairly inaccessible, being above the dispensing tray, I can only suggest using a toothbrush to clean the upper surface (which faces down)
[some conditioner dispensers work by a siphoning method which requires a 'tube' - in fact an open channel - from above]

I have the same problem in my washing machine but haven't got any further that reading up on the internet, and thinking about it. I plan to use an old electric toothbrush in my attempt - so I don't know if it will work !
15.January.2015