I have a mzd2768 and I keep getting ice build up in the bottom of the freezer compartment. What do you think it could be? We removed it and now it's back. Could the hole be pluged at the bottom of the defrost section?

there should be a drain hole at the bottom of the freezer that goes to a evaporation pan underneath. check to see if the drain is clogged. in areas with high temps and or humidity there will be excessive moisture build up,the more the door is opened the more moisture (condensation). Clear the drain, it may just be blocked by ice, MAKE SURE THE UNIT IS LEVEL! This will let the moisture drain properly and prevent ice build up.

I've just had a similar problem. I fixed it by removing the large panel on the back of the inside of the freezer. I found a large build up of ice at the bottom of the freezer which seems to have developed because the drain hole at the bottom of the freezer was blocked. I defrosted the ice, cleared the drain and now the freezer is working fine.

The problem may be the freezer drain heater has failed, locate the drain inside of the freezer compartment and check to see if it is warm, if not you may need to replace the heater.

Hi,
Here is a tip that I wrote that I think may help you...

http://www.fixya.com/support/r3780310-water_running_in_refrigerator_from


heatman101

There is a drain the back of the freezer that is frozen. Your trickle of water comes from the ice that melts off of the refrigeration coils during the defrost cycle. You need to turn off the freezer, then remove the rear cover from the back wall to expose the coils. With a hair dryer, melt all of the ice. You will find a drain under the coils. Melts all of the ice in this drain so water can get out of the freezer. When this drain is clear, you can put everything back together, and your freezer should work normally.

If it's a frost free model, it could be caused by a plugged defrost drain. Every time it goes through a defrost cycle the water is supposed to drain into the compressor compartment. You can defrost it by unplugging it for a day or two and then remove the panel covering the evaporator coil. You should be able to see the drain tray under the coil and find out whats blocking it.

Has this thing a separate frezer and cooler compartment.
Have tried to completely defrost and clean that thing.
At times like in airco's the pinch valve for the cooling process to effect (expansion) is stuck frozen, or very seldom broke.

My Bosch Frost Free Fridge Freezer did the same thing - Ice forming in the bottom of the freezer area after a few days.

It was caused by a blocked drain pipe - When the freezer does the de-frosting cycle, the melted ice drips into a tray and tehn runs into a dish on top of teh compressor, through a pipe.

If this pipe gets blocked, the de frosted ice overflows from the tray and overflows into the bottom of the freezer and then re-freezes !

To fix, pull the freezer away form the wall, locate the pipe that runs to the dish on top of the compressor and blow through it - This should clear it. Alternatively, from inside the freezer compartment, pull off the cover at the back, but the clips holding it on will probably break off, as mine did ! You can sort of push the cover back on and re-fit the food draws.

Yes, I think you have a problem that can be fixed easily by a repair technician. The sound as you described it could have come from the air circulation fan in the freezer compartment striking ice. As the ice builds up it could have stopped the fan from rotating and air flow to the refrigerator compartment.