Hi @josnor ,
Just verifying that it is a Frigidaire Freezer model # FFU20FC4AW2?
Only asking because looking at the parts list from two part suppliers, the condenser coils are on the outside at the back of the cabinet. (see System parts diagram). Because they are exposed to the open air there is no fan necessary to cool them down
supplier 1
This supplier shows the condenser coils in the System parts diagram, even numbers it, but doesn’t list it in the System parts list, although if you search for condenser in the Search by Keyword search box below the parts diagrams, left side of page, it shows that it is available as a special order
supplier 2
This supplier actually shows and lists the condenser coil as part #1- system parts diagram
Two things you mentioned are of concern.
First is “Only top half of my coils are frosty”. This may indicate a blockage in the evaporator unit.
Second is “I do have some oily residue around the lines”. Oily residues may indicate of leak of refrigerant. There is a special oil added in with the refrigerant in the sealed system to lubricate the compressor. If there is a leak then the refrigerant will escape undetected to the air but the oil will leave a trace.
A lack of sufficient refrigerant will cause cooling problems.
You may have to get a licenced refrigerator repairer to check the sealed system. They have the equipment necessary to check the high/low pressures in the sealed system which will indicate what and where the problem may be. I say licenced because depending on your location this is because of the environmental regulations regarding the handling of refrigerant gases. Where I am you cannot even buy refrigerant gas without a licence if you wanted to recharge a sealed system yourself.
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I have the same model and everything. I changed the Thermostat, still not cold at the top of the unit but freezing at the bottom. I changed the defrost timer, still same issue. I tried a new Thermistor or whatever is attached to the coils, same issue. Defrost heater works as I have seen it in action. Only top half of my coils are frosty. Fan works fine. I cannot figure it out. I do have some oily residue around the lines. I am just lost on this one though. I cannot find my condensor coils; i think they are sealed behind the back wall of the unit. So I cannot clean them. Nor do I know if a fan exists to cool them down. Any help that can be afforded is welcome.
par Josiah North
I have the FUG14DHBRWW freezer and only the bottom tray and shelf above it are freezing the food. Anything on the door and anything above the bottom shelf is cool to the touch but far from frozen and not as cool as the refrigerator. I have it in a well vented area but it does get as hot or cold as t he outside temperature as it's on my screened in room/porch. I assumed the door was not shut and that was the cause of the now unfrozen food. We removed all the food cooked it bagged it and let it become room temp before putting back in the freezer. I could not hear or see any fan running. After a few weeks it started to make a noise. When I felt the back of the freezer it seemed to be a fan hitting something. I smacked it with my hand and it sounded like it was ice. Now I can hear the fan and am anticipating my issue solved.......although I still wonder why it happened to begin with. I did the paper trick with the door seal and it pulls out with little to no effort
par Shawn Bingaman