Hello experts - please forgive me if i'm posting this in the wrong place, but I have a problem with my fridge freezer.

I have a zanussi fridge freezer that I keep in the garage and since the kids left the door open for a day it doesn't defrost anymore. There is just a huge build up of ice, which only seems to happen in summer.

How can I fix this, as when I tried to buy a new one I was told they are no longer suitable for garages!!

Thanks in advance for any resposes.