This dual door upper/bottom drawer freezer type of refrigerator has a totally frozen up evaporator coil. I'm trying to find where the defrost timer is located, assuming it has one. I have no schematic. Help locating that part would be much appreciated.
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is the freezer freezing too? to much ice build up? if not check ur damper vent, make sure its not stuck closed or open to far, check the thermistors, the tempeture control thermostat, defrost timer and defrost terminator
Defrost circuit failed, needs to be able to defrost the coils so air can pass through them thus cooling evenly. You can check the heaters located on the coils probably near the bottom back wall of the freezer with a ohm meter if you read through, the heaters are good, if you get no reading the heaters are bad. Or could be defrost timer or on newer models the adaptive defrost control which is a circuit board. If its an older model you can manually turn the timer with a screwdriver if you feel resistance, then you should replace the timer. Also in the circuit is the defrost thermostat located on the coils, this is the least expensive of the 3 components to replace. You should have a schematic located under the fridge, use this to determine which type of timer you have and for further trouble-shooting. Please let me know if this helps
thats different I was thinking of something else the board you are talking about just controls the temp. controls this may be your problem call1-800-688-9900 maytag or 1-800-253-1301 whirlpool they can give you a better idea on the part number issue this may be the problem
The unit was built bt LG. It is a computer controled unit and the timer is built into the main control board on back of the unit. However, the most likely cause of the broblem is the defrost terminator located on the evap on the upper right hand corner. Also, try unpugging the unit it will reset the computer board. You will also have to defrost the unit.
Sounds like a defrost problem. Check to see if
there is any frost buildup in the back wall of the freezer. If so, it is not
defrosting as it should.
bad defrost timer/board
bad defrost heater (in freezer)
bad thermo switch in freezer
you don’t know what these are then unplug the machine and let the ice melt in
the freezer overnight with the door open. Then try it the next day, if is
cooling fine then you need to have a service person replace one of the above
items. If it still has a problem then it might be the compressor and you should
probably replace the machine.