Question about Kenmore 20.3 cu. ft. / 575 liter Upright Freezer 23024
If the frost only forms on the end of the coils then your freezer is low on freon. Normal freon is indicated when the coils are lightly and evenly frosted. Heavy frost on the entire surface indicates the need for defrosting and with an auto defrost system part of that system would be bad.
A qualified tech is required to find the leak and recharge the system in the case of low freon. It is not a do it yourself job.
Posted on Dec 19, 2009
Please confirm whether the back of the freezer, or the coils that you said frost builds on, only have a slight amount of frost buildup. The back should NEVER have any frost, and the coils should only have a slight amount of frost. Once the coils accumulate any appreciable amount of ice buildup, the defrost system should energize. What condition are the door gaskets? This could be the problem too, and you make a good point about pulling a vacuum. Although, with leaky door gaskets, a vacuum cannot be pulled, and that puts an excessive load on the cooling system. The better test for door gaskets is to place a dollar bill between the gasket and door frame with door closed. You should feel resistance to pulling the dollar out. Door gaskets and door vacuum can be a Catch-22. You can't have one without the other, provided the cooling system and defrost system is working properly.
Posted on Dec 11, 2009
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Posted on Jan 02, 2017
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Aug 06, 2014 | True T19F Commercial Freezer
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If there is no cooling at all , before we go further we must confirm the first step of confirming the compressor and gas pressure. So shut off the fridge and leave it off while you clean and check the evaporator for frost. If frost is seen it is a good indication as the compressor is working with sufficient gas within.
Now after about 6 hours plug in the fridge to start. Observe cooling to happen in about one hour and ice to from under three hours.
Earlier make sure that the thermostat was set to normal mode for freezer and fridge. If there is no ice formation we have a big issue as the compressor and gas must be checked out. If compressor is running check the pressure, get help to test gas pressure. If not you will need to fill up ,If gas pressure is good the possibility of the compressor being inefficient is high. In such a case you must take consensus to estimate and decide, if RPM of motor is low check capacitor.
However if Ice forms then observe the fridge for about 24 hours for cooling to continue and the fridge to cut off. If not the auto defrost timer, or the thermostat must be checked.
The ventilation fan that circulates the COLD air from the evaporator coils could get clogged with frost and so could be jammed. Also the wires to the fan can be worn out due to the frost. If so check if the defrost timer works to switch the heater to remove the frost. Also the check if the compressor is shut down by the timer /thermostat . If the heaters are not working, check continuity of the heaters.
So attempt to test using a multi-meter / clamp tester from the outside and make your observations so that we come to the solution.
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