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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.
Cold originates inside the freezer. TA fan pushes the freezer air into the fresh side. So... if that fan ain't working or ice is built up inside the freezer then the freezer will work but the fresh side will suffer. If you have a defrost problem you could find out real easy. Just unplug it and wait a while (depending on how bad it is iced over you might need to go a few days). Plug her back in and if it works ok for a few weeks but does the same thang again then you have a defrost problem. The defrost system has 3 components defrost timer/control defrost heater and defrost termination thermostat. Why do we need a defrost termination thermostat you say? The defrost length is 21 minutes. if that heating element were to stay on 21 minutes your goose would be cooked instead of defrosted. The termination thermostat is designed to shut down the heater when the temp inside the evaporation compartment reaches 50f. So what goes wrong? Timer hangs up electronic control takes a dump, heater goes bad, Termination thermostat goes bad. Number one component that goes out? Termination thermostat. Look for swelling.
Hello there, When your refrigerator starts building up ice at the back of the refrigerator and is not getting cold, the problem actually is caused by defrost settings of the refrigerator. The defrost settings is composed of the defrost thermostat, defrost heater and the defrost timer. If any of the three should go bad, then the refrigerator would begin to build up ice and not cool.
You will have to test the defrost thermostat, heater and timer. Mostly the problem used to be the defrost thermostat.Once you check the three and see that they are okay, then you need to refill the gas cylinder with refrigerant.
Clean the condenser coil, refill refrigerant and test the thermostat, heater and timer.
You should not have to manually defrost. Your auto defrost system is not working. Check the timer usuall in the frig compartment near the thermostat ( a small hole, use a screwdrive flat tip 1/4" to rotate the timer till it clicks starting the defrost cycle) check freezer in 10-15 min should be defrosted if not you will need to check the heater and thermostat located behind the rear or bottom panel of the freezer.
The defrost timer could be under the box in the front behind kick panel or in the rear by the compressor.
It could be a bad defrost timer or a bad thermostat. Both are a cheap fix also, check to see if the condenser coil is clean. If it isn't clean it! Another possibility if it isn't the T stat or defrost timer, the defrost heaters or overload might be bad.
may be you have problem with the Evaporator fan motor not running, defrost heater, defrost timer, open gap on door gasket and bad thermostat (cold control), it may kept the compressor constantly running. Good luck.
You have either a bad defrost heater,defrost thermostat or defrost timer. The defrost timer is located in the control panel box in the fresh food section. The heater and thermostat are in the freezer section behind the rear panel. On this brand it is usually the defrost timer.
The defrost systems is:
HEATER-DEFROST THERMOSTAT-DEFROST TIMER-DEFROST
Start with the timer. It is just under the front kick plate. there
is a knob you can turn it slowly.until it clicks off the compressor.
then open the freezer and listen . You should hear the heater come
on .. it will sizzle when it comes on ...
You will have to remove the back panel of the freezer to check the
heater for and thermostat for continuity. Heater are the lease likely
part to go bad... I always change thermostat and timers together.
let me know if this helps or we can chat if you need more help.
you have either a Defrost heater / a defrost timer/ or a defrost bi-metal that is bad. if you post your model # i can look it up and show you how to set it into defrost to see if the heaters are ok
Since you replaced the timer already that leaves two things you need to check set it into defrost if you know how and remove the panel in the back wall of the freezer you should see the heater(s) are on if not check pwr 120vac at the heaters if 0 volts the bi-metal is bad