The water filter on your American-style fridge serves to filter the water you draw from the appliance (in the form of ice cubes or cold water).
If your appliance is leaking on the outside, it's possible the filter is not positioned correctly.
The filter may also get dirty or cracked, in which case you can either clean it with bleach or replace it.
Some frost-free refrigerators are also fitted with carbon filters that filter unpleasant odours inside the appliance.
The filter on yours may have broken or got clogged up. If this turns out to be the case, you'll need to change it.
We have a range of filters available here to get your fridge-freezer back in optimal working order.