Question about Refrigerators

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The freezer only gets down to about 25 degrees, the refrigerator gets to about 45 degrees. I replaced the defrost therostat and cleaned the coils, both fans are running. I'm stumped, Help Thanks, John

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  • jtleko Oct 09, 2010

    Sorry, Model #SRD26VW

  • jtleko Oct 09, 2010

    Amana Side by side, Model #SRD26VW

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DEFROST PROBLEM
The evaporator coil behind the cover on the back wall inside the freezer will ice up under normal conditions. Every 8 to 10 hours for around 20 minutes the defrost timer (or in most newer models the electronic adaptive defrost control) will turn the defrost heater on to melt the built up ice. There is a defrost thermostat which prevents the heater from overheating the freezer by breaking the heater circuit when the temp reaches close to 32 degrees F. The entire cooling system shuts off during the defrost cycle and starts back when the timer advances through the cycle.

If this ice is not melted it will continue to build up until the air can't flow over the coil to circulate the cold air through the freezer and into the fridge. The temperature change in the fridge is usually noticed first followed by the freezer.

If the defrost thermostat is bad, it can prevent the heater from coming on OR it won't turn the heater off when it gets too warm. It is clamped to the evaporator coil at the top to sense the temp. If it appears to be misshapen it is bad.
With an ohm meter it should show continuity when cold and none when warm.
You can also bypass(disconnect the two wires plugged into it and twist them together) the thermostat to see if the heater comes on then. If it does then you know the thermostat is bad and needs replaced.

The defrost heater is located on the evaporator. It is in a tube which is at the bottom and can also go up the sides of the evaporator. On some types you can see a burnt spot if it's bad. With an ohm meter it should show continuity from end to end when disconnected from the wiring in the freezer. You can also test the wiring for voltage when it's in the defrost mode.

If you have a defrost timer you can test it. It can be located under the fridge behind the kick panel on the front. Some are in the fridge with the controls at the top. You can turn the defrost timer till it clicks and everything shuts down. The heater should now come on. If it does, replace the timer because that means the timer is not running. If it doesn't, check the heater and defrost thermostat. Turn the timer again till everything starts back up to end the defrost cycle.

If you have an adaptive defrost control instead of a timer, replace it if the heater and thermostat test good. It is located in the fridge with the controls in some models and on the back in others.

Posted on Oct 09, 2010

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Hi!!
What's your unit's make and model? Thanks

Posted on Oct 09, 2010

  • Rene J Solis Oct 12, 2010

    Hi!



    First, make sure the Temp. Controls are set up correctly. And verify Temp. with a house hold thermometer. Here is how:



    Setting Controls



    Set controls with a household thermometer that includes temperatures between -5° to 50°F (-21 ° to 10°C). Put thermometer snugly between frozen packages in Deepfreeze ®section. Wait 5-8 hours. If Deepfreeze ® temperature is not 0° to 2°F (-17 ° to -16°C), adjust control, 1 number at a time. Check again after 5-8 hours. Put thermometer in a glass of water in middle of Fresh Food section. Wait 5-8 hours. If Fresh Food temperature is not 38° to 40°F (3° to 4°C), adjust control, 1 number at a time. Check again after 5-8 hours.



    If Temp. Controls are set right, check evaporator coil for ice build up, recheck defrost thermostat installation. Even if you just replaced the defrost thermostat, if refrigerant level is low (due to a refrigerant leak), as soon as the compressor kicks in, the evaporator coil will build ice only on one side (Hi Pressure), the rest of the evaporator will not be as cold.



    Keep me posted!

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.I'm including my article on Refrigerator Repair for your help and convenience.;
Please click or copy and paste into browser for Article
http://www.fixya.com/support/r5816737-fix_refrigerator_psychologically
Thanks for using fixya
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See if water is in icemaker.
Pour water in Ice Maker and wait to see if it ejects.
If it ejects thenyou need to replace water valve in rear bottom of fridge(Its the part that
attaches to water line out of wall)
If it doesn't eject then it is a faulty Ice Maker.
If its leaking same part needs replaced.The water valve at the bottom rear of fridge
First I would check the fan in the freezer. Listen to see if it is running
It moves air to the ref from the freezer
Then check to see if freezer control is turned WARMER, which makes the Ref. colder
Also this might be a common Defrost problem, Ice
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Take out back panel of freezer to check for ice buildup. The coils should be clean.
There are three components to a defrost system- a heater,heater thermostat, and a timer unless you have a defrost electronic card.
Its best handled by a Technician but you could possibly do it by taking your model number to the nearest appliance parts store and asking for the parts. They are mostly located in freezer ,behind back panel on freezer coils.except the card which is usually located in ref The parts store will have info
Also check fan undernearh Ref in the rear
Clean condenser coils underneath
.I'm including my article on Refrigerator Repair for your help and convenience.;
Please click or copy and paste into browser for Article
http://www.fixya.com/support/r5816737-fix_refrigerator_psychologically
Thanks for using fixya
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