Question about Refrigerators
You either have a problem with the defrost circuit or the drain tube is blocked. To check you will need to remove the back panel from the freezer section to check. Behind that panel is the evaporator or cooling coils. If it is completely encased in ice, then the problem is that the defrost circuit has failed. To troubleshoot, see below. Otherwise check the drain tube for blockage. It is located just below the coils in the center Remove any debris and stick a length of wire down the drain to clear it of any blockage. Pour a cup of water down the drain and check that it goes down and enters the pan below the fridge.
The water source that is causing ice build up on your coils comes from the air. The coils are below freezing and the water in the air are freezing on to the coil. The defrost circuit in your fridge has failed. It is made up of three parts, the defrost timer, defrost heater, and thermostat.
The way it works is that normally the compressor has power for 8 hours, then the timer cuts power off and sends power to the defrost heater for about 45 minutes. The heater is attached to the coil and warms up the coil to melt the ice. When the coil reaches about 40 deg F, the thermostat which is in series with the heater, opens up cutting off power to the heater. This prevents the freezer from getting too hot. After the 45 minutes are up, the timer switches the power back to the compressor again to restart the 8 hour cooling cycle.
Any of the three components can fail causing you not to get the defrost cycle to work. Typically the timer stops advancing so you either stay in permanent cooling or defrost mode. Or the heater burns out so it can
Posted on Mar 11, 2011
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Posted on Jan 02, 2017
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Good afternoon friend, thank you for your post!
I understand that your Frigidaire refrigerator has moisture forming underneath the bottom panel of your freezer and that is causing water to drip onto your shelves. Would you be able to provide me with your model number that way I could research additional information for you please? You can locate your serial tag (which lists your model number) on the inside cabinet of the fresh food compartment normally on the left side of a top mount. On a side by side it can be found on the right hand side. I look forward to your response. -Matt
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