[Larry Anderson]

About every 6 months, I have ice built up in the bottom of the freezer, and I have check the drain tube, its clear, the temp setting is on 4, what could be the problem?

[PS Staff - Sheila]

It is hard to know what is happening.

If the tube is clear the water should be draining away.

Have you moved the freezer to a different location?

Is the freezer level?

If you could catch it in a defrost cycle you may be able to see were the water is coming from.

The timer can be manually set to defrost .

Here is a link to your freezer model AUF150KW.