Question about Refrigerators
The freezer starts to create frost and in turn the lower part of the unit get warmer. once you defrost it is ok for a while. Any suggestions?
Hello and welcome.
It's clear that your self-defrost system has ceased to function. What needs to be determined is which part has failed. This depends what make and model you have, as there are some parts that are common failure parts on some models that almost never fail on another.
The basic defrost system consists of a heater (which is either a glass tube/radiant style or a calrod element), a timing device (either a simple clock with fixed defrost intervals or an electronic control that adapts to the environment and changes the frequency of the defrost cycles, and finally a cycle termination thermostat, which terminates the the cycle in the event the timing system fails or the temperature of the evaporator rises to a point where heat is no longer needed.
What I will do is force a defrost cycle to start and then check for amperage in the circuit with am amp probe. You often do not even need the amp-probe, because you can hear a sizzling and popping sound if the heater is energized on many units.
Without knowing what make and model, this is all the info I can provide at this time. I hope you found it useful.
Posted on Dec 27, 2008
Check your gasket on the freezer it may not be sealing properly. that is the main cause of the freezer compartment frosting up. also when you defrosted it did you otice if the drain line was clear and the water was going out of the freezer?
Posted on Dec 27, 2008
Tips for a great answer:
If there is no cooling at all on the fridge section but the freezer works then it is confirmed that the compressor and gas pressure is OK. But if the freezer also gets warmer it can be failure of the auto defrost making the vents choked. Now shut off the fridge and leave it powered 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.
However if ice forms in the freezer 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. Frost formation without defrosting could block the air flow and so shut the air passage to the fridge. Also the blower fan must work and if this is not working then the fan can be faulty. Also a fault on the control unit is a suspect to non functioning of any one of these components.
If defrost timer works but frost keeps forming check while the compressor shuts if the heaters are working, check continuity of the heaters.
So try this test using a multi-meter on the defrost timer and the thermostat and make your observations so that we come to the solution.
Please check the link below for tips to remove the panels/parts:
Sep 20, 2011 | Amana ARB8057C Bottom Freezer Refrigerator
Normally when frost build up occurs it's because warmer outside air is getting into the freezer and the moisture from that warm air cools and condensates then freezes into frost or ice. You either have a bad seal like the other listing states try leveling the front a little higher than the back. Or you may have an issue with the defrost heater, thermostat or timer. Do you have a light that comes on from time to time? If so you have an auto defrost unit. If there is no light you may not have a frost free freezer which means you will have to remove the frost manually.
Please check the bellow links for your knowledge:-
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