Fridge keeps defrosting

I have a 7 years old Zanussi fridge/freezer (one of the self-defrosting ones). Lately the fridge keeps defrosting and floods with water. There is a little hole in the bottom of the fridge where I think the water is meant to go but clearly this is not happening. Is it possible that this hole is blocked - there used to be a little pulley key thing there but it's gone now. Any ideas how to unblock the hole? Should the fridge be defrosting almost every day? I have checked the seal on the fridge door and it seems to be fine so I don't think that's the problem. Thanks in advance for any advice.

The two links in this post might give some advice.

Thanks Sue Ellen exactly the same problem as mine and some good suggestions - I will try to unblock the outlet hole with a drinking straw. I can't get to the back of the fridge as it's built in, but I know it's not running efficiently as I have to keep it on No 5 even now. Perhaps I should get a proper service if I can locate someone who does this. Thanks again.

Where are you based? Perhaps Zanussi would be your best option but probably not cheap. We have had a few different recommendations over the years.

I am in Navan so if anyone around here could do a service I would like to hear from them. Thanks.

We've had a few recommendations for Paul Harding but he is based in Dundrum and not too sure if he is into fridge/freezers or more washing machines.

You could try ringing www.mastercare.ie and see if they can advise. You could discuss the problem with them and see how much a call out to Navan would be.

Thanks again Sue Ellen. I'll try the DIY route first and if no better I will follow up with mastercare - unfortunately a bit strapped for cash at the moment.