Fridge is collecting hose? I have a Bosch fridge(which I thought was a rightly good brand...

I have a Bosch fridge(which I thought was a rightly good brand name)-in the last month a pool of river has started to collect at the bottom of the device-by the salad box--I mop it up , but it returns within a couple of days.
I own changed the settings from 5 through to lowest , no difference .
The back of the fridge has rime collecting on it --but that has happened since I bought it (6 years ago) .
Is this a vulnerability? or can it be lived with?
Thank you .
Answers:    There should be a little hole almost half way down the pay for of the fridge with a tray attached inside and leading to a tube at the put a bet on that hangs over the compressor behind. This catch any condensation and takes it outside.

After a while this hole gets gunged up next to jelly, and the condensation then drips instead into your salad. After defrosting the fridge, verbs it out with a pipe cleaner, and also clean out the tube aft.
try emptying the drip tray at the bottom of the fridge,and then defrost and see what happen,chances are you might need a current thermostat,cheap enough to buy and if pretty competent can be fitted by yourself.