The first thing you can check is to make sure the evaporator fan is running, since the freezer side actually cools the other side. If the fan is running look on the freezer back wall, if you see frost build up:
Your problem is one or more parts of the defrost system is malfunctioned and in return your problem arises. There are three parts to the system, the defrost timer or in some cases control board, defrost thermostat also known as a bi-metal, and the defrost heater. The defrost system is set up to operate as so. The defrost timer or control board will turn the machine off, in some cases every 8 hours, some 12. During this time period the defrost heaters, located behind the freezer wall and rest underneath the evaporator, yet wires to them run up the side of it, are energized and emit heat that raises upward to melt the ice that has formed on the evaporator coils. The bi-metal or defrost thermostat is at the top of the evaporator. When the heat from the heater starts to reach the bi-metal, it breaks the circuit turning the heater off. The whole purpose of this is because the freezer cool the refridgerator side by drawing air across the coils and blowing to the other side via the evap fan motor. In my opinion, if you change one part of the defrost system change them all because usually when one part fails another will follow, so save yourself the time and the food loss, the cost difference is minute.
Now if there is no frost and the fan is running then the air damper ,which is located on the fresh food side upper left hand side has gone bad and the damper motor will need to be changed.
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SOURCE: freezer works ok.refrigerator temp varies from 39 deg.to 60 deg.
check to see if there is frost in the back of the freezer if so you have a defrost prob..
SOURCE: refrigerator not cooling properly
evap. coil could possible be frosting up due to a defrost problem, this would keep the evap. fan from blowing air into ref. section. it also could be a bad evap. fan motor or it could be that the ref. inside light bulb could be staying on due to a bad light switch ,you would be surprisedhow much heat a 40 watt bulb produces
SOURCE: 60degrees in the refrigerator the motor works .
fan motor has open windings, replace the fan motor
SOURCE: Frigidaire model ftr18b freezer works, fridge is only cool
Info relating specifically to the Frigidaire FRT18B5ABB:
1.Refrigerator unplugged remove the bottom back panel. (Access cover with label. The rectangular shaped panel on the back, at the bottom) Place the screws in a container.
Also remove the Kickplate Grille in the front, and the defrost pan.
2.Use the wand tip on your vacuum cleaner, and vacuum this area out. Pay special attention to the condenser coils, and the fan. Use care as you don't want to bend the fan blades. After you have vacuumed up as much as possible, see if your vacuum has where you can attach the hose to blow air through it. An air compressor, hose, and air nozzle would be REAL handy right now! Blow the condenser coils, and all areas clean of any gunk. (Hair, spider webs, etc.) If this is not feasible for you, you'll need some sort of long, thin, dust 'bunny', and have to dislodge this 'gunk' physically. Then vacuum.
3.BE SURE to replace the bottom back panel, (Access Cover)! It is a VERY necessary item! If your fridge doesn't have one at present, make a temporary one of cardboard, and tape it on. This access cover is needed.
If your refrigerator side is only cool, and your freezer is cold, you may have a problem with the Cold Control, (Temperature Control), or the Defrost Timer. (Timer-Defrost)
http://disruptit.com/manualgateway.cfm?pdfwanting=34242&username=anon&AV=123345&I=99.169.118.45
SOURCE: Freezer section working properly, 0 degrees,
If it's like mine, cold air from the freezer isn't reaching the fridge section, so you probably have one or both of 2 problems: the circulating fan isn't working and/or the air flow channels are blocked by frost/ice. The fan is probably inside a structure at the back of the freezer that should be removable to check it.
If the fan's running, you have a freeze-up. Solution is to turn everything off, remove food & wait for the ice to melt which will take several hours unless you speed things up with, say, a hand-held hair dryer. This worked for me!
If the fan's not running, you can find a replacement at your local appliance parts dealer.
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heatman101
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