Our Whirlpool Refrig GD25DFXFW02 is working fine our problem is the ice maker , the cubes contain white flakes, is there a coating on the ice maker that could be chipping off> We have changed the filter , emptied the old cubes but still have the problem. The flakes are not in a glass of water without cubes. Thank You

Most ice makers in domestic refrigerators make a noise when filling ice containers and when "dropping" ice cubes into ice container. If working OK then this is possibly the noise as described above.

Hello. Refrigerator manufacturers do not recommend any cleaner for use on their ice makers molds other then wiping the surface of the ice maker with a mild detergent. The coating on the mold can be damaged with caustic chemicals. If you are needing to clean the cube mold on this ice maker because it is flaking or has a mineral buildup on it, the best course of action is to replace the icemaker. Here is one that is fairly inexpensive.

http://www.ebay.com/itm/4317943-Refrigerator-Icemaker-Ice-Maker-for-Whirlpool-Kenmore-Kitchenaid-Estate-/151851282376?hash=item235b0aafc8:g:8v8AAOSw~oFXDl30

sounds like your ice maker has a degraded coating on the mold that forms the cubes. if you remove it from the freezer, then you can see if the coating is coming off. if so then you need to replace the ice maker.

I would suggest replaceing the water valve , behind the refrig , where the wall water line connects to , on the refrig , AND remove the front kick plate , and clean the coils on the bottom , of dust , lint pet hair , etc . If your ice maker cycles , at least 8 cubes at a time , should dump . If only 4 , then not enough water is going into the ice maker .

Pour about 2/3 cup of water into the ice maker . If it dumps the cubes but doesn't refill with water , replace the water inlet valve , behind refrig , where the water line connects to on the refrig .
If it does not dump the cubes , and the cubes stay in the ice maker , replace the icemaker .

Open the freezer door and on the right side , make dure the slide is in the on position . If the red light flashes twice , then pauses , flashes twice , pauses , consistently , then close the flap door on the left side of the freezer . The light should go off . If these tests work , then the cut-off optics are good , and the icemaker needs replaced , due to the cubes not dumping . Also check the coils under the front of the refrig , to make sure they are clean of dust , lint , etc.

Pour about 2/3 cup of water into ice maker . If it dumps the cubes , but doesn't refill with water , replace the water valve . If it doesn't dump the cubes , replace the ice maker , after making sure the coils under the front of refrig , are clean of dust , lint , pet hair , etc .

Undissolved minerals can appear when ice cubes are added to chilled drinking water. Freezing tap water causes dissolved minerals to solidify and scatter, giving a cloudy appearance. When ice cubes melt, any undissolved minerals settle to the bottom. These mineral compounds in our drinking water are naturally occurring and safe.
Sometimes we see black particles which can be the non-stick surface of the ice mold flaking off.

There are three common problems with icemakers:

There's no ice
Small or too few ice cubes
Specks in the cubes
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There's no ice If your ice maker has stopped producing ice completely, check these, in this order:

• It may be turned off. Look for the wire along the right side of the ice maker that looks a bit like a coat hanger. If the wire is in the raised position, the ice maker is turned off. If so, try one of these:



• If your ice maker has a small red plastic lever, lower it to lower the wire.



• If there's no plastic lever, simply lower the wire.



In either case, the ice maker should begin producing ice again. Also make sure that the temperature is 8 degrees Fahrenheit or lower. If the freezer is too warm, the ice maker won't cycle properly.


• The ice maker fill tube may be blocked with ice. If so, melt the blockage using a hair dryer-but be careful to not melt any plastic parts! Also replace the water shut-off valve or water-inlet valve, or both, if necessary.



• The ice maker head assembly may have broken parts. Look to see if the gears are broken. Check to see if the small plastic arms that rest against the ice rake are broken. If the ice maker head assembly is modular and you've found broken parts, you can just replace it.

Small or too few ice cubes If the ice maker is producing ice poorly--making small cubes or too few cubes--you probably have a clogged water line, a defective water-inlet valve, or a defective ice maker mold thermostat that isn't cycling properly. Check these:

• The water line that's attached to the back of the refrigerator. Make sure you have good water flow. If the flow is poor, repair, clean, or replace the tubing or the shut-off valve that supplies the water.



• The water-inlet valve. Replace it if it has failed.



• Check the freezer temperature. If should be 8 degrees Fahrenheit or lower. If the freezer is too warm, the ice maker won't cycle properly.



• The ice maker mold thermostat. Make sure that it's cycling properly.

Specks in the cubes If you find black or gray specks in your ice cubes, have a look at the ice cube tray. If the protective coating is peeling away, the most economical solution is to completely replace the ice maker.

Removal instructions can be found here http://www.acmehowto.com/howto/appliance/icemaker/diagicemaker.php