Question about Freezers

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Freezer stopped working (staying cold). Compressor was hot so there was power to it but I did not hear it running. After the unit sat for a day I plugged it back in and overnight the freezer was as cold as it used to be. What could cause that and what can I do to prevent it in the future?

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  • peter_jasak May 27, 2009

    This is an upright freezer - not a refrigerator/freezer combo. There is no auto-defrost on the unit.

  • peter_jasak May 27, 2009

    The freezer in question is just a freezer (no refrigerator) and there is no auto-defrost function.

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It look that the thermostat has an issue

Cooling is poor For an overall understanding of how refrigerators should work, read about refrigerators in the How Things Work section of our website. A refrigerator or freezer that is cooling, but cooling poorly, may have a problem in one of several areas:

Evaporator coils
Condenser
Poor cooling is often the result of a heavy frost build-up on the evaporator coils or a condenser that is clogged with dust, lint, and dirt.

Evaporator coils Poor cooling is often the result of a heavy frost build-up on the evaporator coils. You can't see these coils without removing a panel on the inside of your freezer. A sure sign that there is a build-up is the presence of any frost or ice build-up on the inside walls, floor, or ceiling of the freezer. Such a frost build-up usually indicates a problem in the self-defrosting system or damaged door gaskets.

The refrigerator is supposed to self-defrost approximately four times in every 24 hour period. If one of the components in the self-defrosting system fails, the refrigerator continues to try to cool. Eventually, though, so much frost builds up on the evaporator coils that the circulating fan can't draw air over the coils. There may still be a small amount of cooling because the coils are icy, but with no air flow over the coils, cooling in the refrigerator compartment is quite limited.

Here's an inexpensive, though inconvenient, way to determine if the problem is with the self-defrosting system. Remove all of the perishable food from the refrigerator and freezer, turn the thermostat in the refrigerator to Off, and leave the doors open for 24 to 48 hours. (Be sure to have several towels ready in case the melting frost and ice causes the drip pan to overflow). This allows the refrigerator to defrost "manually." When the frost and ice build-up has completely melted away, turn the thermostat back to a normal setting. If the refrigerator then cools properly, it indicates a problem with one of three components in the self-defrosting system:

  • The defrost timer


  • The defrost thermostat (also called the bi-metal switch)


  • The defrost heater


If it still does not cool properly, there may be a problem with the refrigerant level or the compressor. You may need to consult with a qualified appliance repair technician to further diagnose the problem

Condenser Self-defrosting refrigerators all have a set of coils and a cooling fan, usually under the refrigerator, that need to be cleaned regularly. If these coils get coated with dust, dirt or lint, the refrigerator may not cool properly. The coils may appear to be a thin, black, wide radiator-like device behind the lower kick-panel. To clean them, disconnect the refrigerator from the power source, use a refrigerator condenser brush (see the Appliance Accessories section) and your vacuum cleaner to clean the coils of any lint, pet hair, etc. You may not be able to get to all of the condenser from the front, it may be necessary to clean the remainder of the condenser from the rear of the refrigerator.


Posted on May 27, 2009

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Hi,

Check the vent at the top of the shared refrigerator wall for cold air from the freezer. If not, then you can either replace the motorized flap inside the vent or prop the flap open with a stick or something. The manual solution won't harm anything.

OR

Inside the fresh food compartment there is a defrost timer hidden behind the temp control panel. Sometimes there is a plastic plug over the hole that you need to put a flathead screwdriver in and slowly turn it clockwise. When compressor stops I want you to wait about 25 minutes to see if the refrigerator comes back on by itself without help. If it does I need you to listen inside the freezer compartment for sa sound of crackling or sizzling noise indicating defrost is taking place

Thank You

Posted on May 27, 2009

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