Freezer has had ice film on bottom for some time, leaks down into the frig, unit began making a periodic clicking noise last night, woke up this morning to defrosted food in freezer. Cleaned coils, unplugged for 1/2 hour & when started, blowing air into freezer doesn't seem very cold. Could this be a freon issue or something else?

its was trying to tell you it needed cleaning and now a reset has to be done get the manual and reset the unit

the drain line is clogged causing the ice build up .the frig has to defrost every 6 to 8 hours so every time it defrosts is when it will leak ..you will have to defrost the frig manually ..turn it off. open the doors. let it defrost. remove the thick ice on the bottom ..after its defrosted take the bottom an back panel off.. un plug frig first !! drainline is in the back in the middle of the freezer. unclogg it hot water or shop vac be carefull good luck!! drain line should go to a pan under the frig, in the back make sure it drains before putting back together

You will need to remove the bottom freezer crisper and check the defrost drain , to see if it is iced over . If so , then use a hairdryer to melt the ice ( hot water also helps ) . When you see the drain , ( could be obvious obstruction from plastic ) , use a small hose inserted into the hole , to blow thru , to remove any unseen debris blockage .
You may have to remove the rear inside freezer panel to access this drain , depending on your model number . So make sure the drainhole is open. When it happened to mine this was the problem.

Your drain plug within the evap area of the freezer is frozen, turn frig off, let sit for day or two with doors open. Once all ice has melted then take rear freezer evap cover off and pour water into try and make sure it drains, if not then unplug drain. This is usually caused by a defrost heater bad or unit not going into defrost when it's supposed to, may be main board.

If you turned off the ice maker, I suggest you unplug the ice maker connection cord so the frig system is not compromised by any default in the ice maker. Next, unplug the frig from the electric receptacle and wait 5 minutes, then re plug. This many times will allow the control circuit to reset itself and the failure/error codes will usually diappear (if nothing else is wrong).
Note: any time you disconnect power to a frig or air conditioner, always wait 3-5 minutes before restoring power to give the compressor time to settle before forcing it to start again; this makes a big difference some times. Good Luck, Macgivor.

I had the exact same issue last night. I would press on the back panel long enough and the noise would go away only to return this morning at 4am. I finally got up took all of the bins and shelves out and found an very large accummulation of ice at the bottom (floor) and walls of the freezer. The ice accummulation was causing the rattling of the tubes in the wall of the freezer (I don't know what you call them), but they were frozen over on one side. I found this out once I took the back wall panel off of the inside of the freezer. I also found the drain hole back there and it was frozen over solid, as well as my ice dispensing unit at the top of the freezer. This whole problem began when I turned on the ice maker 3 days ago. I used my hair dryer and hot water to clear all of the ice from both areas and now it is nice and quiet. Don't know if the acccummulation is due to some defrost switch gone haywire, but at least the rattling is gone and my freezer is back to square 1 for the time being and I saved myself a visit from the appliance guy in the meantime. Took me a total of 1 1/2 hours to do it all.

you may have defrost problem you will have to call them

nothing to do with light bulb - noise is probably fan hitting ice that has built up. to check, remove back panel inside freezer and check for ice build up. melt off with a hairdryer and get back to me if i'm right

Any noises from frig at all??? cicking humming???pull the unit out and remove back cover. Is the compressor(football)size motor in back hot to touch??Lights are on in frig right?

Just additional clues..(general). The defrost timers (on non-electronic) usually located at the bottom (underneath), have a tendency to fail. (One of mine is in the center, one was on the left side) There are usually about 5 wires connected to it. If it fails while defrosting.. the fridge will warm quickly and stop cooling, if it fails in cooling mode, you will have the icing up problem. (other) A squealing noise is usually a fan motor. -also- (Freon issues)..as freon is lost from a small leak, first the freezer will actually get colder, but the refrigerator section may be too warm (I know it sound stupid). When enough is lost the compressor will get hot and the fridge will not cool.