Thanks for that, now I understand the problem!
Disconect the power
Undo the screws at the back of the lid
Push the lid forward, up and off.
You will see the drawer sitting there.
Mark the hoses entering the drawer and remove them.
Unclip the fixings of the whole box from the cabinet
You will then be able to reach the concertina hose that goes from the bottom of the box to the top of the tub. Undo this at the box
You can now take the whole box to the sink.
There are several types of boxes that have been fitted. If the lid is screwed on, undo it.
If its held with catches, unclip it>
Some are sealed.
Either way, you can now use some gardening wire to poke out all the holes in the lid and keep flushing it through with water from the tap.
It will be abit laborious but you should be able to clean it out this way.
If all else fails please see here
(Click on the word in blue)
You can then order the bits required.
If you need more help, please just ask.
In the meantime,
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