Freezer walls get all frosted up
SOURCE: Refrigerator Not Making Ice, Frost in Freezer and Refrigerator Not Cold
It has a defrost problem. Most likely cause would be the defrost thermostat which clips onto the evaporator behind the back panel in the freezer. Next most common would be the defrost timer. Third would be the defrost heater. Let me know if you want to try to test these parts. If so I will need the entire model # from the sticker in the fridge or on older models on a plate at the bottom front below the door.
SOURCE: Frost buildup
It is not defrosting. You have to remove back wall of freezer where frost is and take hairdryer to melt away frost. You need to check defrost heater. This is on bottom of evaporator coils. It has wires going to it on both sides. This has to be checked for continuity. If ok on top of coils is a round unit called a defrost terminator. This needs to be checked for continuity also. This must be done before you defrost coils. It should have continuity when its cold.
If these are ok you probably have a bad timer or defrost board.
SOURCE: Frost
It has a defrost problem. 1. Defrost thermostat 2. Defrost timer. 3. Or Defrost heater.
SOURCE: excessive frost buildup in bottom freezer section of Kenmore refr
There are several reasons this can be happening...
1. The seal on the door may have a tear or may not be seating properly...this allows excess warm air into the freezer compartment and in its effort to remove the same ...frost appears.
2. There is something call a thermistor that is cycled on and off as needed to remove excess frost accumulation and or ice buildup on the evaporator (freezer) coils...it is a heat strip which actually defrost the frost/ice. if this is not working frost will accumulate and eventually it will become Ice......now the remarkable thing about Ice accumulation is that you would think everything would remain cold or get colder ..however in this case the opposite occurs...it insulates the coils and thereby increasing the temperature...put a thermometer...one that is calibrated properly...(calibration can be set by placing a thermometer into a glass of ice water...the temp of a glass of ice water..after a few minutes setting will be exactly 32 degrees)..if the temperature of your refrigerator is gradually rising over the period of a week...you will need to call a tech or replace the thermistor and or trouble shoot other problems that can occur such as..
3. The evaporator fan may be going out although they usually make a high pitched whining noise of a whirring noise before they go out...not always and if they are intermittently cycling off then frost would build up...do you always here a fan running when you open the freezer...if so that is good...fan is working...but it may be cycling off at times when no one is aware.
P.S. the odds of your ice maker causing this are very, very slim...in 35 years in the industry ..I have never had an ice maker cause frost due to water spray...it will almost always result solid sheets of Ice..if it evers does cause a spray....which like I said is rare...lottery ticket type rare :-)
This should lead you in the right direction...if you need help in finding a reputable service company in your area let us know..I hope this has been helpful..if so PLEASE rate me....thank you... .......The Fang
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