The smell seems to be coming from a black odd shaped drip pan. It looks like an adhesive of some sort was added to hold the tray over the motor, but it is soft and I can move the tray around but have no idea how to take it out. there does seem to be a drain tube directly over the tray
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Re: bad smell coming from back of fridge
The adhesive is a contact adhesive and gets soft from the heat of the compressor. The idea is that condensate drips from the in cabinet drain onto this drainpan. The drainpan then is heated by the compressor running and water evaporates. The drainpan can get yucky from dust and bugs collecting in it. Difficult to remove but not impossible, you just glue it back in place when you refit. It is usually glued in place at the time the compressor is fitted. Your best bet would be to clean it in place and spong up the liquid. I usually put in a quarter teaspoon of granular chlorine (pool) into the drainpan and this keeps things a bit cleaner.
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My name is Peter. I am a retired field service refrigeration technician.
Plastic holds odors. The smell may not becoming from your drain pan, but more likely the liner.
What to do:
1.) Remove the shelves, ice bucket and crisper drawers and scrub them with a baking soda base cleaner.
2.) Scrub the liner walls.
3 .) There are deodorizers especially made for refrigerators; One for the fresh food section and one especially for the freezer section. You can get these for any appliance store.
4.) Ok, lets check the drain pan.
a.) Unplug your unit or turn the main breaker off.
b.) Raise the two leveling screws in the front to allow you tp pull your unit out.
c.) Having enough room to get behind your unit, unscrew the bottom cover.
d.) Observe. You either have the terrible drain pan design, where the drain pan is fixed on the top of the compressor with hi-temp adhesive. Do not attempt to remove. Over time the adhesive dries out and the drain pan falls off.
The other type of drain pan is almost just as bad. You have to unbolt the compressor and other things to access. Do not attempt this.
What field technicians do when there is a drain pan leak, is repair the leak with duct tape and a high temperature silicone adhesive. In this case if there is an odor, sprinkle 1/2 cup of baking soda around the drain pan.
The drain pan can be removed by lifting up the refrigerator and removing the four torex screws on the bottom of each side of the refrigerator. Use 2 pieces of 2x4 to hold up each side of the fridge while removing these screws. After removing the screws the bottom panel will separate from the refrigerator and you can remove the drip pan from the panel as it isn't attached by screws. The pan is VERY fragile and removing the drip pan is a two person job. I recommend just pouring bleach into the drip pan to kill any bacteria causing the smell by removing the back panel which will be held on by several quarter inch screws. You'll see the white drip pan on the right hand side of the fridge looking from the back.
If you are referring to the drip pan that on the bottom of the fridge, that could be the source of your odor problem. Take the pan out and check to see what is in it. Normally there should only be just water that comes from the defrost cycle.
You may have had something drip and somehow get under the fridge. I know blood dripping from meat will smell. It could have dripped down through the defrost drain tube to the pan underneath. You can access the pan from the rear by removing the cardboard cover. If the smell seems to be coming from the pan, it's difficult to remove so I would just pour some bleach in it to kill any smell and you may can wipe it out from there. The drain tube may also have the smell in it so you can pour some bleach into it from the inside of the freezer at the bottom of the rear panel. You can move the fridge to see if anything is pooled on the floor that might smell.
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You may have had something drip and somehow get under the
fridge. I know blood dripping from meat will smell. It could have dripped down
through the defrost drain tube to the pan underneath. You can access the pan
from the rear by removing the cardboard cover. If the smell seems to be coming
from the pan, it's difficult to remove so I would just pour some bleach in it
to kill any smell and you may can wipe it out from there. The drain tube may
also have the smell in it so you can pour some bleach into it from the inside
of the freezer at the bottom of the rear panel. You can move the fridge to see
if anything is pooled on the floor that might smell.
if you cant remove it then wash it unplug the refrigerator from ac outllet first then remove the carton cover in the back and you gona see the pan were the water is temporaly storege with a garden hose washing the pan and then clean the floor use or news paper around the refrigy is helpfull the water or so in the pan is evaporated with the hot of the compresor sistem that water come frome the freeser compartment....good luck and rate me
Thank willie for helping with one:
"Well, it looks like the pan is a seperate plastic pan and not the compressor mounting pan like some of the newer ones are.
It appears that you have to remove the condensor fan motor and mounting bracket then maybe the pan will left up and over the compressor, or maybe there is enough room to lift the pan up and out the front over the condensor coils"