My fridge upper unit isnt working, there is no air circulating, i could hear the compressor working and it seems the lower unit is fine. it started by making a constant ticking sound and then a day later, it stopped

New side by side layout is fridge side by side upper 2/3, with lower 1/3 pull out freezer
Normally in modern frost free systems only the freezer has the evap, and the fridge thermostat operates a duct, allowing freezer air to blow into the fridge.
The compressor runs until the freezer is satified, the thermostat powering the compressor is only connected to the freezer. If the fridge requires cooling but not the freezer, there's plenty of freezer air to circulate into the fridge after the compressor has turned off. Eventually the cmpressor will start again when the freezer temp gets too high.

On twin evap models, the fridge fan motor cuts out when the fridge gets to it's setpoint, so no air circulation through the fridge evap, though liquid refrigerant flows through it to the freezer evap. Likewise, if the fridge needs cooling but not the freezer, then the compressor will start but the freezer fan motor will not run.

Old school cyclic defrost systems had the thermostat in the fridge, and the freezer kept running until the fridge coil was low enough to make the fridge cabinet down to temp.


Refrigerator Wikipedia the free encyclopedia

Check if Your fridge has ice or moisture on the back wall, behind that drawer, and if service light or vacuum condenser lights are on, if so : you will need to go thru this repair I show on my youtube chanel. Hope It helps. How To Replace Sub Zero Evaporator HD 1080

It's a circulation problem so either the fan in the back of the freezer(circulates freezer and blows cold into fridge) or the defrost element. If the element is faulty the rear ices up and air won't flow. If fan is faulty it's not blowing the cold air. Remove rear panel if no ice it's the fan if its full of ice it needs the defrost element(usually get termination sensor also depending on type) If you open the freezer door and hold in the doorswitch you should hear the fan running if its working.

if your freezer is working fine and you hear your compressor running you could have a frozen drain tube or more than likely the evaperator motor fan has failed.this is the fan that circulates the cold air from freezer throughout frigerator.what kind of unit is it?side by side or top mount freezer or what?let me know

Condenser fan at compressor working?

Hi,

Many times a freezer and/or refrigerator do not work right because of a dirty condenser coil...there are also many other things that can go wrong.

If you are hearing a clicking or buzzing then check out the last two tips.

If your refrigerator is running but warm, then...

Check out these tips that I wrote about that... it is a great place to start trouble shooting your unit...and something that you can do rather then calling a repair person to do a simple thing for you...

Refrigerator Condenser Coil Cleaning Refrigerator Repair

Refrigerator Troubleshooting Refrigerator Compressor

Refrigerator Compressor Start Capacitor and Start Relay

Refrigerator or Freezer not Cooling or Getting Cold

heatman101

It is possible that it is the thermostat, and if not as you hear the compressor starting shortly then stopping, and redoing that many times.
Your compressor is certainly out of order and must be replaced by a professional, that means to dessolder the current compressor, and replace it with the new one, and change the gas.
So major intervention and at least 2 hours of work.
In the end, you will have a new heart for this great fridge.

does the fan come on if not then the fan delay is bad

check the door gaskets for air leakage

"it seems to work fine but will not get cold"
Not sure how it can work fine and is not cold. When you say work fine, is the light on and the freezer fan blowing but is the compressor running?

Unplug the Ref and wait about 30 min or so, plug it back in and listen for the compressor to start running. You should be behind the Ref to hear this. If you don't hear it start running then you may hear a clicking noise. This clicking is a problen with the compressor start relay. If the compressor runs but still is not cold then it could be low on coolant.