AEG SANTO No_frost refrigerator beeps with 5 sec freqency
We have the same fridge, and I could not find my model either!
The label is hidden on the bottom of the top part on the left side, you need to take the veggie tray out to see it. I spent about 3 hours finding the model on the net, and in the manual it said where to look lol.
This mysterious model is the AEG SANTOS 3895-6 KG AKA S3895-6 KG productnumber 928405123-- last two digits can be 00-33.
We had the same problem, solution: press and hold the ON button for minimum of 3 seconds. The fridge switches off. Wait 10 seconds and repress the same button. That´s the quick fix.
To make it go away completely switch off fridge, pull out plug, and thoroughly clean the air vents on the back below using compressed air. After this the problem went away permanently.
Good practice to airclean every 6 or 7 months. You can find the manual for the S3895-6 KG on http://www.electrolux-ui.com:8080