Unit stops cooling properly both sides, condeser and evaporator fans run. compressor is hot condenser coils are room temp. If I shut down unit for 2-3 hours It works again for 8 to 24 hours before it stops cooling properly (50 to 60 F). Funny think is when it goes it this "mode" the lights don't work, also if you turn of the unit with the doors open the evoporator fan comes for this time frame 2 to 3 hour, then when fan shuts off lights come on. What ralay or sensor is controling that. Model # 106.9537652
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Re: refrigerator not colling properly
Let it run until you have a problem again then look at the back wall of the inside of the freezer, if there is frost then it's not defrosting and that would be your problem (usually the defrost heater). If you don't see frost then you need to determine if the compressor is running or not. It's possible to hear the two fans run, but not the compressor. If the compressor is running, along with the 2 fans, then it is a sealed system problem and usually not worth fixing. If it's not running you'll need to check the compressor start relay on the side of the compressor. It is possible for a bad compressor to cause the relay to fail, so replacing it may or may not get you going again.
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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.
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.
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.
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.
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.
Jason, MOST refrigerators get there cold from the freezer side and circulate it via a fan that's also normally inside the freezer. There are three motors normally in a refrigeration system. The inside Evaporator fan motor that circulates air across the evaporator coil inside the box, the Condenser fan motor near the compressor that cools the freon after compression, and the compressor itself. If you open the doors (and sometimes you may have to hold in the door switches) do you hear a fan running? If not you could have a couple things going on: 1. The fan(s) has failed. 2. The freezer Evap coil may of iced over and the fan too is frozen stopped. 3. Your condensing unit:(compressor, condenser fan, condenser coils) has a problem. It is important to know if the compressor itself is running. If there is a loose connection to the compressor via the start/over load relay (normally attaches directly onto the compressor), or if the start/over load otself is bad the compressor will not run. Best way to tell is via gauges but I doubt your frig has ports. Check to see if your compressor is really hot. Could be bad start/over load relay or bad compressor. Try unplugging your frig for say 30 min then, with your hand on top of a cool compressor, plug the frig back in and see if compressor smoothly vibrates for at least 5 min without becoming very hot or shutting off even though fan continues to run. The fact your fan is running TYPICALLY means the thermostat is calling for lower temps and the fan/compressor kick in together.
Cut everything off for a few minutes then turn it back on and listen for a click from the compressor relay as the compressor tries to start. Is the compressor motor running.If no check starter/overload relay. Check to see if the condenser fan at the back underneath near the compressor is running. If no check fan.
Are the condenser coils near there warm or room temp. should be warm
Is the evaporator fan in the freezer running. It blows cold air into the fridge side through a damper in the wall between the freezer and fridge. Make sure the damper is open.
Below the evaporator fan is the evaporator coils. Remove the back cover in the freezer to observe the frost pattern. Light frost everywhere(NORMAL) or a partial pattern of ice(LOW ON FREON) or nothing(LOW FREON OR COMPRESSOR PROBLEM).
When the compressor is running, two fans should be running. One inside the freezer compartment that moves air over the evaporator coils. The other is under/behind the fridge that cools the condenser coils.
If the fan on the condenser coil (the one under/behind the fridge) stops working, the system cannot dissipate the heat from those coils, and thus cannot sufficiently cool the inside of either the freezer nor fresh food compartment.
On mine, when the condenser fan failed, I noticed right away. The front face of the wall separating the compartments became very hot. Extremely hot.
Apparently the refrigeration system is designed so that waste heat keeps condensation from forming where the magnetic gaskets on the door need to seal. When the condenser fan failed, there was too much waste heat (because no heat was being dissipated from the condenser coils by the fan), thus making that gasket-sealing area very hot.
If it is your condenser coil fan, you can relieve the problem temporarily by removing the bottom back panel from the fridge and aiming a box fan (a regular room or window fan) at the condenser coils. This will circulate air over the coils, thus removing heat from the coils.
Many times a freezer and/or refrigeratordo not work right because of a dirty condenser coil...there are also many otherthings that can go wrong.
If you are hearing a clicking or buzzing then check out thelast two tips.
If your refrigerator is running but warm, then...
Check out this tip that I wrote about that... it is a great place to starttrouble shooting your unit...and something that you can do rather then callinga repair person to do a simple thing for you...