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Very thick ice collects in bottom of freezer

I have tried to clean the small pipe at the back of the unit (that runs to the evaporating tray) and have tried manually defrosting the f/f. The f/f seems to work normally except for this build up of ice (ie. it retains the correct temperatures).

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  • Delma Warden
    Delma Warden Jan 28, 2009

    Thanks very much for that rapid response. I think it has worked!

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The drain pipe you cleaned out has a p-trap that holds water. after awhile this trap will build up sludge and possibly freeze up. i recomend defrosting the drain pan again and try some way to forcfully flush hot water thru the drain. I use a turkey baster filled with water to do this. if the drain continues to freeze you may need to install a heat trap to keep drain from freezing.
a heat trap is just a piece of 10-12 guage solid copper wire with about 3 inches in the drain and the other end wrapped around the defrost heater which is the BLACK rod attached to the bottom of the evaporator coil in the freezer compartment. if you need any further assistance just let me know Peyton

Posted on Jan 27, 2009

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Ice collecting on the bottom of the freezer.. is not such a terrible thing...

(Probably means the defrost is working... (merely not EXITING)).

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but if ...

If this is not a new device... and has been happily tending to it's own needs (evaporating well) for a while (months would be re-assuring)...

Then you are MOST probably looking at a clogged evaporator drain... (usually easily fixed by negotiating "WARM" (not hot) through the bottom vents slots of your freezer section.

Looking under your Refrigerator/Freezer... or consulting your owners manual... Locate your defrost "catch" pan...

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(easily tested: clean paper in tray...
Still clean tomorrow = clogged drain (pan is watered daily).

Close inspection should reveal a tube descending into it.... This is where you will watch for your patiently applied doses of warm water to appear... (near immediate).

It may take several doses... because ice can also have formed over the drain... Be persistent... You will be proud.

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Find the water drain hole/pipe and clean it thoroughly with a pipe cleaner or other softish flexible rod. That should allow the water to drain away. Make sure back of the unit is clear and clean so water drains and evaporates off properly.

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Don't worry about the line, it is supposed to be the way it is. If you are talking about the condenser coil, located on the back bottom part of the unit, with a small fan in front of it, yes, it is supposed to be hot.

The condenser job is to disipate the heat absorbed by the evaporator (the coil inside the freezer). Make sure the condenser is clean and condenser fan is working, also, make sure there is air circulating thru the back of the unit to help cooling the condenser.

The noises you hear, are probably the defrost coil melting the ice on the evaporator, this function is on a timer and happens 3 or 4 times a day.

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Hello. If your freezer is not a self defroster, you must have had a power failure for a few hours that caused a melt with water ending up on the floor of the freezer and then refreezing. IF you have a self-defrost model, your defrost cycle produces some water which should make it's way down to the evaporator tray just above the floor... in your case, the small hole in the floor is plugged and the water is accumulating on the floor rather than making it's way to the evaporator tray. The fix is to clean the evaporator tray, defrost the ice with a blow dryer, locate the hole and clean it out with a couple of pipe cleaners or cotton swabs. Regards, Joe
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There is a small amount of water collecting in the bottom of freezer and then freezing


Your drain tube may be stopped up with ice at the upper end because it drains too slow because it's stopped up at the lower end in the evaporator pan under the unit at the floor. It can get dust and mold in it. Once you get the ice out at the top a little pressure with a turkey baster will usually clear it out. Flushing it out with hot water and clorox may help. Make sure it drains quick enough to prevent refreezing. . The drain should be located below the evaporator coils on the lower back of the freezer.

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Frigidaire side by side: water fills up in bottom of freezer


You have a blockage in your drain tube, at the bottom of the metal tray there is a hole which is connected to a tube which runs down the back of your refridge to a pan next to the compressor. It is an easy fix have done this 1000's times. Remove back panel in freezer, grab a heat gun or hair dryer and melt the ice it the bottom of tray. Clean the water in the tray with some paper towel next get some hot water in a measuring jug and pour into the pan(hot water will help melt ice in tube) repeat this process a couple of times and then get a curtain wire or something flexible to push down the pipe to clean the blockage...you will know when the blockage is clear because the water in the pan will suddenly drain off....put cover back on...make sure to unplug appliance before servicing...hope this helps :)

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I have the same model + problem. You should not need to defrost this model manually if it's working correctly, but the ice build up you describe is probably due to a blocked pipe in the auto-defrost system at the back. You need to defrost properly to prevent recurrence.

Behind the upper freezer drawer there's an aluminium tray behind a plastic grille. Every few days this tray warms up to melt any accumulated ice behind this plastic grille (full height of the freezer). A pipe should take the meltwater down to a plastic tray below (pipe + plastic tray are visible if you take the lower panel off the back). Your problem is too much ice blocking that pipe: the heater can't cope and it doesn't melt, so the ice 'cascades' down the back behind the bottom drawer.

When you manually defrost, you must ensure that this pipe is clear, otherwise the auto-defrost won't work, and you may have to defrost manually again within days.

I have found that the best way to defrost the pipe is to remove the lower back panel, disconnect the corrugated flexible plastic pipe from the stub that comes from the bottom of the freezer, + pump steam into the stub (gently) using a hand-held steamer (with tube + nozzle). You don't have to empty the freezer or move your food as the door stays closed, and no steam gets into the freezer until the pipe is unblocked. Be sure to unplug the freezer before taking the back off! [There is a fan in this area that could start up without warning]

Check how much of the pipe is blocked by gentle probing with a pencil: the aluminium tray is about 105mm above the bottom of the stub. This measurement is important…

When the pipe is clear, there may still be too much ice in the aluminium tray above (not sure how much is 'too much') if you only created a narrow 'chimney' though the block of ice (likely to get blocked again). You need to widen that chimney by melting more of the ice in the aluminium tray. I use a simple steam nozzle made from an old-fashioned Bic pen with a couple of 1mm holes drilled just below the coloured bung at the end. This directs steam onto the walls of the 'chimney' rather than upwards.

There's no point steaming the walls of the plastic 'stub' pipe, so only use the home-made nozzle when your probe reaches 105mm (i.e. when you have melted all the ice in the plastic stub tube but before your 'chimney' has broken through the block of ice in the aluminium tray). If you judge this right, you'll melt almost all of the ice under a still-frozen top surface: no steam will get into the freezer and your food will stay frozen. With a probe it will be clear when you've broken through the top surface of the ice. When you have done so, it's time to look inside the freezer to see how well you have cleared the aluminium tray.

It's perfectly feasible to get all this done in 30 minutes.

Don't forget to replace the corrugated plastic pipe + valve at the bottom. It stops humid air from going into the freezer and icing up in exactly the area we've just been defrosting.

Take a lot of care with steam jets as they can burn you badly. You should check a first aid website so you know what to do BEFORE it happens.

Some of these tips may be helpful: (1) run the freezer at -18 degrees (the 'warmest' setting) so it's not working so hard. (2) Leave a big gap (>100mm) between the back of the freezer and the wall. (3) Clean the matrix of delicate tubes to the left of the fan whilst you have the back off [a small bottle brush is ideal; remove the fan for better access]. (4) Put something between the middle of the freezer and the wall to prevent the warm air that's being blown out behind the fridge from being sucked into the air intake behind the freezer (there is a baffle built in underneath, but nothing behind. (5) Mount the fan on spacers (with longer screws) so that it's closer to the heat exchanger… this means that a larger area of grille can act as an air intake. (6) Raise the unit off the floor a little to free up the air intake path beneath the freezer.

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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.

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1 Answer

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