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Re: refrigerator is not cold,freezer is frosting up
Defrost system failure is correct. It could be the evaporator fan, timer, heater. You can manually defrost with a hair dryer which will give you a couple of days until a service tech can determine which part has failed. Remember, there is a lot of ice behind the freezer back wall around the cooling coils. You can only see the tip of the iceburg.
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Ice is made when freezer temperature is cold. Freezer and refrigirator will not cool if iced up on back wall. Your defrost system failed, causing frost buildup on the coils and restricting airflow and heat transfer. Most likely cause is a defective defrost timer that is not advancing into defrost (2-3 times every 24 hours). Defrost system comprise Timer, Heater, and Thermostat. You need the tools to diagnose the cause or just try one by one to replace the parts. Other choice is to call a tech. The freezer must be defrosted one time manually to remove the long accumulated frost.
Sounds like a defrost problem, is there ice on the back wall of the freezer? If so the defrost system has failed. The most common repair is a Part# 67004757 defrost thermostat and adaptive defrost board Part# 67004704. Even with the parts in your hand, you will need to de-ice the freezer to replace the thermostat in the freezer section, then unplug unit to replace the adaptive defrost board located in the controls of the refrigerator section. Normally it can take about an hour to complete.
your evaporator coil behind this frost on the wall is iced up and you cant blow cold air through solid ice,remove this panel and defrost the coil,then check the defrost heating element below the coil,the defrost thermostat located on the coil or the defrost timer itself for being defective
Check and see if there is frost on the back wall of the freezer. Also make sure the fan is running in the freezer. If the fan isn't running in the freezer replace it. If you have any frost or ice on the back wall of the freezer, remove the back wall inside the freezer. Check and see if the coils are completely frosted over. Thaw the coils out with a hair dryer, then measure the heater and make sure it measure there. (ohms)
If it's ok, then the defrost thermostat which is attached to the coils or the defrost timer is bad.
Defrost system: Freezer fan, Defrost timer, Heater, Thermostat. If any one of these are bad the coils in the freezer will get clogged with ice and not allow the cold air to circulate over to the ref. side.
Ice/frost build up on the back wall of the freezer is an indication of this problem. You can manually defrost with a hair dryer which will give you a couple of days before it starts iceing up again. Remember, the ice you see on the back wall is just the tip of the iceburg, there is a lot more on the coils behind that wall.