Why my Frigidaire refrigerator won't cool enough but the freezer works fine I did replace the damper control and the temperature sensor but still have the same fault at 45 degrees the evaporator fan turn on and off constantly and the damper as well.
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The fan doesn't stop the ice build up from occurring.
There should never be that much ice build up on the evap unit because there's a regular auto defrost cycle that should keep it to a minimum by defrosting the ice off the evap unit
If there's a lot of ice on the evap unit and even on the fan, then there's a problem with the auto defrost cycle. This could be due to a faulty defrost heater, defrost thermostat, blocked drain from under the evap unit to the evap pan under the compartments or a faulty control board.
An auto defrost cycle occurs once every 8-10 hours (time interval depends on whether compressor run time or elapsed time is the method used - it varies between makes and models as to which method is used) and lasts for about 20 minutes. During this time the compressor and the evap fan are both turned off and the defrost heater is turned on to melt the accumulated ice build up on the evap unit. The meltwater from the ice then drains down to the evap pan to evaporate naturally.
If the temp near the evap unit gets too high due to the heater being turned on i.e. ~45°F then the defrost thermostat operates to open the heater circuit as you don't want the evap unit to be damaged by the heat.
At the end of the defrost cycle, the heater is turned off (if it is not already turned off), and the compressor and evap fan are both turned on again to drive the temps back down to the set temperatures. Usually the freezer temp never goes higher than 31°F as you don't want the frozen food to start thawing during the defrost cycle.
The compressor and the evap fan are then both turned on/off to regulate the temp between the lower and upper preset operating temps, until the next defrost cycle. Although when a door is opened (either door) the evap fan will be turned off as you don't want the cold air being blown out of the open door. The compressor will stay running. When the door is closed again, the evap fan starts running again. Did you check if you can hear/feel the fan turn on and off when you open a door and manually operate the door light switch, you never said.
It could just be a faulty fan if it isn't covered in ice or a faulty fan power supply circuit.
Here's the simplified wiring diagram for the model (click on wiring schematic) or if it is a wiring fault that needs to be traced click on wiring diagram
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Hi @angelcruz47342,
Have you checked if the evaporator and/or evaporator fan are iced up at all?
An iced up evap unit and fan can affect the temp in the refrigerator but not the freezer.
If it is iced up then there's a defrost problem
Can you feel if the evap fan is blowing air into the freezer and the refrigerator - with a door (either door) open manually operate the door light switch to find out.
It could be the fan blade is slipping on the shaft
由 jayeff 完成的
The evaporator ice up cause the fan doesn't still on just start on and off for one second every time when the fridge reaches 45 degrees and remains that way till I unplug it
由 Angel Cruz 完成的