Hi,
Thanks for writing to Fixya.com.
Well I donot think it’s the thermosensor. As you have described the most common fridge "not cooling uniformly at various temperature settings " problem is a frost free failure. Remove the access panel in the freezer section to expose the evaporator coils. If the coils in the freezer section get plugged up with
frost, this frost will block the evaporator fan motor from blowing the cold air around. The fan blade can also hit this frost and either become noisy or stop altogether. Locating the
defrost timer can be tricky....they are often hidden behind the back bottom corners of the fridge at the bottom, in the last few years the timers have been located in the
ceiling of the fresh food section, and some
behind the cold control cover. Once you locate the defrost timer, slowly turn the screw like
wheel in the middle of the defrost timer with a straight screwdriver until the fridge shuts off. You are now in defrost. If the
defrost heater(s) comes on now, replace the defrost timer and defrost thermostat. If the heater(s) does not come on, you can
ohm test the defrost heater for continuity or
volt test for 120 volts to the heater(s). If you have no power to the
defrost heater(s) you can also bypass the defrost thermostat to see if the defrost heater will come on,
join the 2 wires together to bypass the defrost thermostat. If the heater now comes on, replace the defrost timer and defrost thermostat. If the heater itself is bad, defrost the fridge with a hair dryer, replace the
defrost heater* and
defrost thermostat. If the defrost timer seems "hot" to the touch or is noisy ( like a ticking or screeching noise ) I would recommend to replace it.
To support my logic please check the article bellow:
http://www.applianceaid.com/frig_notcold.html
Thank You for contacting Fixya and please accept the solution if it has helped you.