Hidden Ice build-up inside plastic bottom cover of freezer
This ice build-up is invisible unless one unscrews and removes the bottom white plastic cover of the freezer compartment. The build-up became so bad after 15 months of use of a brand new AMCOR model 560WL top freezer refrigerator that it prevented the fan behind the rear wall of the freezer compartment from turning. The end result was a non cooling refrigerator and freezer. Removal of the ice using hot water and an ice pick enabled the fan to once again turn and the freezer and refrigerator to once again work. QUESTION: how does one prevent the invisible ice from building up?
Generally, icing is the result of too much water vapor inside the unit, blockage of the circulation channels and too much packing in of the box. The water vapor is generally caused by: uncapped items in the fridge, opening the door too often, humid conditions, bad door seals. There is of course, there is a possibility that the defrost cycle on the unit is not working. About once a day, depending on the brand, you should notice that the fans and compressor don't run and you should hear a bit of creaking, sloshing or other strange noises as the ice melts. If this is not happening, your defrost timer or the coil it heats could be bad.
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You need to clean the drain line from the freezer it is plugged resulting in a big ice build up at the bottom. Remove the shelves and back cover you will see where the water is suppossed to drain, you will need a hair drier to melt the ice build up because it has backed up and now is frozen too. After you remove the ice build up you can take a coat hanger and insert it into the opening, see if you can work the coat hanger down through the line to push out the obstruction, if not pull the fridge out and remove the bottom cover you will see where the line exits and drains into a tray it may be plugged right there. You may have to force out the obstruction with compressed air if none of the other things work or do what I did, blow into the tube from the bottom to force what ever is blocking the line out the top, doing that though is a little messy. Cat hair or dog furr is usually the problem.
Experienced this problem with Evaporator coil icing up (coil is located inside back wall of the freezer compartment; the ice/frost was visibly blocking the series of louvers or slots along the bottom of the freezer back wall. I think the power outage caused partial melting of an already somewhat iced coil, but when the power was restored the water on the coil just froze solid. When these slots become obstructed the Refrigerator will not cool to its proper 36-40 deg.F temperature and the compressor motor runs frequently and the noise level is louder than usual. SOLUTION: fastest and safest way to Defrost this iced up coil is: (1) turn off 120V power / unplug refrigerator from the outlet; (2) remove all food to another refrigerator / freezer and take out ice cube tray & flip icemaker bail wire to its up (off) position - but leave top freezer basket in-place; (3) remove Bottom freezer basket (which should lift up and out; (4) move refrigerator away from wall - and carefully unscrew and remove white-painted, rectangular metal panel at bottom in the back....... you will see a white plastic water tray below a small fan with black plastic blades...... have a 3x5 cellulose sponge and bucket handy...... (5) open freezer door all the way and set a 21-inch box fan on the floor in the opening or area where the Bottom freezer basket was removed... put a single towel on floor under the box fan if there is significant frost on the bottom of the freezer compartment (there should not normally be any); (5) turn the fan to "Medium" speed with air flow pointing toward the freezer... you will be amazed at how much faster this works than pans of hot water or hair dryers (the latter is potentially damaging and dangerous); (6) with a flashlight you should soon see the water drip-drip-dripping from a spot at the center and bottom of the Evaporator coil - where it goes down a white tube and into the white plastic pan beneath the small fan you saw in Step #4; after awhile (maybe 20 minutes) check the white plastic tray in the back - which will be full of water (sponge it out)... continue defrosting with the 21-inch box fan... check the plastic tray again - and sponge out the excess water. A completely iced-up coil will probably fill the plastic tray three times. Eventually the water will stop dripping - which means the Evaporator coil is completely defrosted. There may be some water that gets onto the floor under the left side of the refrigerator which you will have to wipe up. Reattach the metal panel and reinstall the Bottom freezer basket and ice tray. This process takes long enough that you can clean the inside of the refrigerator while you're at it.
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.
it sounds like your defrost drian is clogged remove rear panel inside freezer and you should see a hole at the bottom below the coils. it could be covered in ice if it is use a hair dryer to melt the ice and then flush hot water thru the drain hole with a turkey baster some whirpools have a removable floor panel also in the freezer you can tell if it does you will see a screw in each front corner then lift out panel and clear any ice that has build up
Your problem is probably a broken plastic switch bracket . Pt # 2180226 . To access , use a butter knife between the dispensor grill and the lower portion of the dispensor cover . FIRST , remove the cover on the top freezer hinge , and disconnect the plug there . This removes all power to the door . Insert the knife about 1 " from the side , and push down and inward , to push the plastic tab of the cover , outward . Do the same for the other side . Lift upward to slip the top tabs free of the mount . Disconnect the plug to the dispensor cover , and remove the cover . The white piece with the 2 switches , probably has a short plastic stub , broken off which holds the ice dispensor switch . Looks like maybe 4 small screws , hold the switch bracket on . Transfer the switches carefully ,because you are working with plastic . When reinstalling the dispensor cover , after attaching the receptical , slip the top portion of the cover in place , and pop the bottom to latch the lower clips .
I also had a loud fan and it was caused by ice build-up on the fan in the back of the freezer. From inside the freezer, I removed the plastic grill that covers the fan (I think I also had to remove the side rails and ice maker) then just let the fan defrost in the sink. Made sure it was nice and dry before putting it back in or else ice would just form again. I also took a sheet of plastic and put it between the ice maker and fan grill to stop water from dripping onto the fan and haven't had a noisy fan since. I just need to remove the ice build-up from on top of the plastic sheet every now and then, but that's much easy than taking everything apart to get to the fan.
on the back wall inside the freezer unscrew the white panel and then remove the panel behind this . you should now see a tray that runs the width of the freezer with a driphole on the left-hand side which will probably be frozen with ice , chip away whatever is possible and then put boiling water on the driphole and once this is clear you should find the problem sorted , 1 other option is to turn the fridge/freezer off for several days and this will allow the ice build-up to thaw thus resolving the problem
Could be same as problem I just fixed. Remove back panel inside freezer and 1. check fan operation 2. check for ice/water at bottom of the hidden section. There should be a drain hole, which may be blocked by ice. Fix by turning off and pouring boiling water in there until blockage is fixed See http://www.fixya.com/support/t1507330-ice_collects_in_bottom_freezer