SOURCE: Fridge timer location
THREE DIFFERENT LOCATIONS FOR DEFROST TIMERS ON
MOST REFRIGERATORS.
1 BEHIND THE REFRIGERATOR IN THE COMPRESSOR COMPARTMENT.
2 BEHIND THE TOE PLATE LOCATED ON THE FRONT BOTTOM OF THE REFRIGERATOR.
3 IN THE FRESH FOOD SECTION WITH THE CONTROLS
ON SOME NEWER ELECTRONIC MODELS, THE DEFROST IS
PART OF THE ELECTRONIC CONTROL LOCATED BEHIND A PANEL ON THE BACK OF THE UNIT.
SOURCE: westinghouse 522 frost free fridge
stuck timer or stuck thermostat if it has an mechanic timer change the timer first if problem persists, change the thermostat.
SOURCE: Westinghouse Aurora Frost free fridge
You need to remove the clog in the drain line from the freezer to the condenser, Look under the fridge for the plastic drain line and blow it out or otherwise clear it, Then insure that the unit is level. Sooner or later you need to clean the freezer drain pan. After using up your frozen food, remove the back panels of the freezer and clean the area well.
Ray
SOURCE: Fridge Icing up on N1B Candy frost free fridge freezer
How to check
everything
http://www.acmehowto.com/howto/appliance/refrigerator/refrigerator.php
If the evaporator coils behind the back panel of the freezer
are icing up because of auto defrost failure that will stop the circulation of
cold air and eventually affect the freezer too.
check defrost timer, defrost heater, defrost thermostat. In
most newer models the timer has been replaced by an electronic control board.
If the heater and thermostat are ok it’ll be the control.
You can turn the defrost timer till it clicks
and everything shuts down. The heater should now come on. If it does, replace
the timer. If it doesn't, check the heater and defrost thermostat. Turn the
timer again till everything starts back up to end the defrost cycle.
Your evaporator coils frost up in normal use
and every eight hours or so the entire unit shuts down and the defrost heater
comes on to melt the frost. This cycle last about 20 minutes. The melted frost drips
into a drain pan and through a drain tube to the drain tray under the
freezer/refrigerator where it's evaporated by the condenser fan.
Testimonial: "Really useful advise, with link to more help. Thank you"
SOURCE: westinghouse silhouette frost free 522 fridge is
The heating element, located behind the back plate of the freezer, is probably not working. A failed heating element leads to a build up of ice around the evaporator coils in the rear of the freezer. If the back plate of the freezer is removed (ONLY DO THIS WITH THE APPLIANCE UNPLUGGED FROM THE POWER SUPPLY) and there is a large build up of ice around the evaporator coils then it's a fairly good indication that the heating element is not working. The heating element comes on periodically to defrost/de-ice the evaporator coils. Heating element is often activated by a small timer switch which turns the heater on for a set time every 24 hrs or so. Heating element may be open circuit or timer switch may not be operating. Most likely to be open circuit heating element.
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