How to replace temperature control

This is normal. All commercfial freezers must defrost 3 to 5 times a day, or they will freeze over at the coil and then stop freezing. A timer in your freezer turns off the compressor and turns a heating element on for 10 to 15 minutes. During that time the coil heats and melts frost from the coil. Usually within 30 minutes the temperature will briefly rise to 20 t0 25 degrees F and then quickly drop down to 0 degrees F. The food rarely defrosts in this short period of time..

Faulty alarm.

It seems to me that the thermostat is no longer sensing temperature. IT will either stay on (it controls the compressor) or wont come on at all when it becomes a problem. You can order one thru sears.com if there is not a appliance parts store nearby. To check before buying, heres what you do. You need to know the temperature (use a thermometer that reads below zero). it has to be at least 10 degrees or cooler. if it is then turn down thermostat dial to 1. if it shuts off then the thermostat is ok. if it doesnt turn off (the compressor) replace t'stat. let me know the temp. and if this works for you hope this was helpful...

It depends on the control that your freezer utilizes.

If your temp control dial has the numbers 0-9 or 1-9, then you have whats commonly known as a coil temp sensor.


Unlike an air temp contol that measure the air temp inside the freezer and comes on and off with a 3-5° swing, the coil temp sensor runs a little bit different.

With a coil temp control or sensor, the temp control has a capillary tube and bulb that is inserted into the coil either at on of the ends down a guidetube or just into the center of the radiator type fins. This temp control measures the temperature of the coil, and not the temperature of the air inside the freezer. When the unit runs, the coils typically gets 20° colder than the air temp. And when the control satisfies (shuts off), it will not call for cooling again until the sensing bulb has reached the cut-in point which is typically well above design box temp.


So, to quickly answer your question, yes it is possible to have a 25° temp swing and not have anything really wrong with the unit. That is how its been designed to operate and that is how it will operate. Your only option (although not recommended) is to replace the coil temp sensor with and air temp control. That will give you more consistent temps.


Also, when taking temp of a freezer with a coil temp sensor, be sure to temp the product in the freezer and not the air temperature.

Normally there is a Green light showing that power is on

A Yellow one for fast freeze and a Red one for under temperature

The outer casing is well insulated from the inside otherwise the freezer motor would run none stop without cooling the contents so the temperature of the outside casing will reflect the room temperature not the intenal

If your'e positive the temp is ok then your freezer cold control may be bad. Slowly turn it toward off. If the compressor doesn't cut off before it gets to off, the control is probably bad. Test it here>http://www.acmehowto.com/howto/appliance/refrigerator/refrigerator.php

Hi, Put a thermometer in the freezer and see if it gets down to 0 to 5 above zero. If it is not getting that cold, something is wrong. If you had frost building up behind the rear panel, there is a defrost problem.
Please let me know the temperature and I can assist you further.

Vic

If the temperature fluctuations occur (at least the ones to 20-30 degrees) at intervals of 6 hours or so then you are catching it in it's defrost mode which occurs on a timer. The timer shuts off everything except lights every 6 hours for an average of 20 minutes. This usually isn't enough to thaw things but I have seen it cause some crystale. Look closely at the back inside wall of the freezer for an accumulation of frost. If you see it there then you may have a defrost problem. Usually this is accompanied by steadily rising temperature in the freezer and fresh food secions both. The temps you listed (0to10) are fine. Good luck, AJ

Hi dgh1,
The freezer should stay within 5 degrees of 0 while in operation. While in defrost the freezer may reach as high as 20 to 25 degrees. If any higher temperatures are reached your food will spoil as they are defrosted and refroze everyday. If you find that the temperature is allowing your food to defrost you may want to replace your defrost thermostat. This device is located on top of the evaperator coil inside the back of the freezer. It is made to turn the heater off when a temperature of 55 degrees is reached. One other possible problem could be your defrost timer is taking to long to restart the cooling cycle after defrosting. I hope this will help you and please send any other questions you may have, I am happy to help. and dont forget to rate me.
Mike Anderson
Anderson Appliance
(865)945-3808

hi thanks for the question its normal for a frost free freezer to run a long time to keep a good cold temp i don't think you have a problem thanks the appliance doc