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Ice build up in fridge and freeze ..,not defrosting automatically...after switching it off for ice to defrost,the ice buildup is back....had it regassed earlier this year...what is the problem n why?
Ice buildup constantly after defrosting...not defrosting automatically
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Hi Shane kelly, I would look at whether freezer is defrosting or is ice building up behind the fridge panel at the back and then freezing your fridge compartment.
It takes like 2 days for the ice to melt if this is the case.
Then freezer will work for a while and then when defrost is missed it builds up the ice again.
If this is what is causing problem it could be a transducer fault in the freezer that detect ice or a timer fault in the defrost circuitry.
Andrew writes
Also check the evaporator circulating fan inside the freezer. The defrost timer and ice build up is also my other suggestion. The evaporator becomes a solid block of ice and doesn't pass air.
No this time the fan was the cause of the ice build up and the fridge will be damaged if the fan problem is not resolved. What is the model number of your fridge? APPLIANCE 911
Self defrost mechanism has a problem. Check the defrost timer and defrost heater element for proper operation. Ice buildup is the culprit.
If you unplug and defrost overnight, replug, it will work fine till the ice builds up again.
if it starts working ok after the defrost then you might find it will build up ice again.
There might be a fault with a small device called a thermister that senses the ice build up for the defrost controller.
What most likely is happening is the ice build up freezes the fan that blows the cold air to the fridge compartment.and around the freezer.
You have a defrost problem. Locate your defrost timer while the unit is iced up and turn it until you hear a defined click. At this point open the freezer and listen for ice cracking. If Ice starts cracking then it's your defrost timer bad. If ice doesn't crack, then you have a defrost component bad ( heater and Bi-Metal) Ohm out your heating element and replace if there is no continuity. You can usually find defrost timer either under the front of the box, in the fridge around the light or thermostat or sometimes in the back at the bottom. The dial on the timer can only be turned one way with a large flat head. You will hear the difference in the way the clicks sound for the defined click. Good luck.
Is there any frost buildup on the rear panel inside the freezer? If so you have a defrost problem of a bad defrost heater, defrost thermostat, or defrost timer/ control board. If no frost then you probably have a clogged defrost drain. Remove the rear panel to access drain hole.
Make sure defroster heater, temperature switch, and defroster timer and/or circuits are working.
Ice buildup will stop airflow from freezer to fridge, so fridge will be too warm.
My guess would be that the defroster is working half the time, allowing ice to build up. When it does work, it's got way too much ice/water to deal with, so it overflows the pan underneath.
This is a drawback of most mini-fridges. Start by defrosting everything. Then fill ice cube trays with water and keep lowering the setting until the water freezes. Just go a little lower, no more. Fridge should not freeze food. If the fridge stays closed all the time food will freeze. Also if the freezer element gets ice buildup it must be defrosted. Not automatic like home fridge. Most kids today weren't born when the last fridges that had to be defrosted were in service.
If freezer is icing up, you might have a defrost problem. Frost free models have a heating element that is controlled by a timer to automatically defrost ice, defrost timer turns on defrost heating element every 12 hours to melt ice in freezer and allow good air flow. You can test defrost element with an ohm meter(located inside freezer coils-will have two wires going to a plug connection), if OK replace defrost timer (located in various places depending on make and model
Ice on the back wall indicates a problem with the defrost cycle. The ice builds up and starts to choke off the air flow, so your symptoms would indicate that may be happening.
Defrost problems are usually any of the three components, the heater element, the defrost termination temp switch, or the defrost timer.
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