Condenser Coils are Dirty
If the refrigerator is not cold enough the condenser coils may be dirty. The condenser is like a radiator and must stay clean in order to dissipate the heat which was removed from the inside of the refrigerator. As the coils get dirtier the refrigerator becomes less efficient, which makes it work harder to cool down. If the coils are dirty enough, the unit will never be cold enough and will not be able to cool the inside of the refrigerator to the proper temperature.
Evaporator Fan Motor
If the refrigerator is not cold enough, the evaporator fan motor might have failed. Every refrigerator has a set of coils called an evaporator. The refrigerator may have one or more evaporator fan motor(s) depending on the model and evaporator locations. The evaporator fan motor circulates the cold air from the coils thru the compartment. If there is only one evaporator it is in the freezer side. If the fan is not working, no cold air will get to the refrigerator compartment. The freezer may still get cold.
Condenser Fan Motor
If the refrigerator is not cold enough there might be something caught in the condenser fan motor blade, or the condenser fan motor might be defective. The condenser fan motor draws air over the condenser coils to cool them. The condenser fan motor is located underneath the refrigerator near the back. Pull the refrigerator out from the wall and remove the access panel to access it.
Start Relay
If the refrigerator is not cold enough, the start relay may be defective. The start relay is a small device mounted to the side of the compressor. It provides power to the run winding along with the start winding for a split second at start-up to help get the compressor started. If the start relay is defective the compressor may run intermittently or not at all and the refrigerator will not get cold enough. The start relay should be replaced if defective.
Temperature Control Thermostat
If the refrigerator does not get cold enough the temperature control thermostat might be defective. The thermostat allows power to flow through to the compressor, evaporator fan and condenser fan. If the cooling system fans and compressor are running, but the refrigerator or freezer is not cooling correctly check for an airflow or defrost system problem.
Start Capacitor
If the refrigerator isn't cold enough the compressor might be having difficulty starting. The start capacitor serves as a battery to give the compressor a little boost during start-up. If the start capacitor is burned out the compressor might not be able to start and run as often as it should. Test the start capacitor first with a capacitance meter, they don't fail often. If it's defective, replace it.
Thermistor
If the refrigerator is not cold enough the thermistor might be defective. The thermistor is a sensor which monitors the air temperature. It is connected to the control board. If the thermistor is defective the refrigerator does not cool or may cool continuously.
Temperature Control Board
If the refrigerator is not cold enough the temperature control board might be defective. The temperature control board provides the voltage to the fan motors and compressor. These boards are often misdiagnosed. Check all other components to be certain this is the cause of the problem.
Compressor
If the refrigerator is not cold enough, the compressor might be defective. The compressor is a motor which compresses the refrigerant and circulates the refrigerant through the evaporator and condenser coils. There are several other components which are more likely to be defective if the compressor doesn't work. If the compressor itself is defective a licensed professional will need to replace it.
Main Control Board
If the refrigerator is not cold enough the main control board might be defective. This is not common. Check the defrost system, cooling fans, and cooling controls first.
8 Comments
This is a great answer and I learned a lot, thanks!
And it helped stump me further.
Our fridge (this model) was freezing everything hard and then suddenly it wasn't, then it was then it wasn't. Now it really isn't.
I replaced the evaporator fan; it worked briefly but doesn't seem to be coming on now.
The condenser fan and condenser sound like they're working (I cleaned them and verified that they were working at least while I was looking at them).
The evaporator is crusted with frost at 30 F on the right side where the refrigerant comes in; on the left the evaporator is at 48 F.
Do I have a sensor or control problem, such that it's not starting the evaporator and fan? Or???
I would love to have your prognostications on this!
by Daniel H Wolf
If this is the same model as our the condenser failed due to the airflow is from the back not from the front like most models causing the frig to overheat and the condenser to quit. Had the condenser, compressor and coil replaced and works fine for now. Tech said it would happen again if we couldn't find a way to get more air flow to the back of the frig. It's a poor design!
by dpatton444
I have a question my fridge is doing the opposite the freezer is cold but the fridge part is not getting cold
by Brittany Bryant
Your air flow fan for the fridge might be out.
Open ONE of the refrigerator doors and then push the button at the top of the door in to make the light go off. Put your hand in front of one of the holes in the back of the middle of the fridge and see if there is air flow.
You might have to pull everything out of the fridge, remove the shelves, unscrew and remove the back panel of the fridge and then push the button in to see if the fan is turning. While the panel is off, you will also see the evaporator (cooling) coil and fins. They should be at least half 'frosted'. You can shut the fridge doors for a few minutes and see if they're frosted. If they're frosted, and the fan isn't turning, that's your problem.
Those coils could also be iced over preventing air flow. That would be an issue as well.
No frosting or cooling of the fins at all means you may have a stuck refrigerant diversion valve (which switches refrigerant flow between freezer and fridge).
by John Tsouris
Kenmore Elite Grab and go model 76572 original setting are 0/37 on front panel, replace your water filter CWMF041 replaces LT700P buy it at (Home Depot or Lowe’s) you will get plenty of ice water and ice dispensed. Replace the your 2X2 filter set inside top middle of frig. Use the blow dryer on cold and blow dryer to clean all the dust that accumulates in the back of the motor. Trash all your junk from frig and maintain it clean at all times. Irma
38 minutes ago by Barbie
by Barbie
Show 3 more comments