Chosen Solution
How does a fridge separetly control temperature form the freezer and the fridge? Do both compartments have separate fans? My fridge is very small at about 200L. Update (11/12/2018)
looks like there is a vent going between the freezer and the fridge. Maybe it has a small motorised damper? volume is 215L Model is LG GR242MF
Hi, It depends some do and some don’t. Not an answer but if you give the make and model number of your fridge we may be able to find out. The temperature is controlled by thermostats or thermistors that inform the control board whether to maintain the compressor motor and evaporator fan running to keep cooling the fridge and or the freezer or whether to turn them off as the correct temperature in both compartments has been reached With a lot of fridges the cold air is circulated throughout the freezer compartment by the evaporator fan located in the freezer compartment. It also sends the cold air via a damper unit (which can open and close under the control of the control board), into the refrigerator section to cool and maintain the temperature there. In some other refrigerators they use a separate evaporator unit and fan in the refrigerator compartment to help move the cold air in that section to maintain and control the temperature. While yet other refrigerators have only the one evaporator unit but two fans, one in the freezer compartment and one in the refrigerator compartment to circulate the cold air to maintain the temperature. Some smaller fridges don’t have a fan at all but rely on the evaporator unit being inside a combined freezer/refrigerator compartment and mounted at the top, where the cold air from the evaporator unit “falls” down (as it is heavier than warmer air) to cool the fridge while the freezer section (very small usually with small door in front but still inside the one compartment) is a lot colder as it is right next to the evaporator unit. Hopefully you get the drift.
