Question about Frigidaire FFUS2613L Side by Side Refrigerator
I understand that you are having a problem locating the defrost timer.
The unit does not have a separate defrost timer the defrost timer is made in the temperature controls and works thru the light. You will have to make sure that the light works in order for the defroster to work. But as you have stated that you are having a problem with the temperature control board then operates the defroster. You will need to change the temperature control on the unit. The cheapest place that I have located the control board is at Sears Parts Direct here is the part number 241739702 the cost is $92.99 on the following
You can also go to this link to see if you can find a parts distributor close to you that you maybe able to visit and pick up the part right away http://www.frigidaire.com/partsdistributorlocator
To replace the temperature control:
1. Unplug the Refrigerator
2. Remove the three screws from the bottom side of the control housing
3. Drop down the housing remove all the plugs from the control board
4. Place the new one and reverse the directions
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Posted on Apr 01, 2011
You don't have a defrost timer, you have a control board which controls the defrost cycle. It's part 23 in this DIAGRAM
Here is a description of the defrost system but basically if your heater and defrost thermostat are good the control board is bad.
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.
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.
Posted on Mar 31, 2011
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Posted on Jan 02, 2017
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