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I work in a medical office and our company just purchased an LG Model # LFC20740SW to accomadate more room to hold our vaccines. Well are ranges for refrigerator and freezer have to be within certain temps for the specifications of the vaccines. The refrigerator and freezer work great, but when it goes into defrost mode it warms up to much and this is a concern that we have to address immediately. So if you could give me any advice or give me a # to someone that can maybe overide the defrost cycle. Any help will be muchly appreciated thankyou.

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You need not worry about the defrost cycle. It just warms the external walls of the refrigirator and in the interior it will be about 20-25°C which i guess will be good enough to store vaccines. There is a work around to remove the deffrost thing but if defroster or the fan on the evaporater(inside coil)when the evaporater does not defrost it causes ice build up on it,this does not allow air to flow through it.The result of this is that the freezer will stay cold for awhile but the refrigerator section will not get cold enough.

Posted on Jun 30, 2008

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Good day,
Usually caused by the machine in a cool area or room, along with the machine not getting enough door action, both freezer and fresh food.

Domestic refrigerators are designed to be used as just that. Domestic refrigerators.
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In other words, it's not getting enough activity daily. Common problem in doctor offices.

The best model for that type of application in the past was the Amana bottom freezer model. where the primary control was located in the freezer, nailing the freezer temp, and the top controlled by a pneumatic damper controlling the fresh food section, but I do not know if their current model still uses that system.

One option,space permitting is a small chest type freezer added to what you have.

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The compressor can be had for around 200.00. The cost for the tech to put it in and charge the system will be at least that much. The service charge will vary.

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