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When measuring temperature inside of your refrigeration unit, it is important to understand that natural temperature fluctuation is completely normal. A unit's compressor does not run constantly and as a result any air temperature readings you note will have a natural fluctuation if measured at regular intervals. The operating environment and general product usage habits, such as frequency of opening and closing doors, can also play a big factor in temperature fluctuation. Placing warm cans, bottles, kegs or other items into your refrigeration appliance will immediately raise the internal temperature. Also, it is very important to understand the differences between an air temperature reading and a liquid temperature reading. While air temperature will fluctuate for the above noted reasons, liquid temperature will remain much more consistent.
The following items should be noted:
- Temperature fluctuations of several degrees within a compressor cooling cycle is normal.
- The frequency at which the is opened/closed will impact internal air temperature.
- The ambient temperature of the room or location where the appliance is installed will impact the ability of a refrigerator to maintain internal temperature.
- Signs of frost when internal temperatures are oftentimes completely normal is due to the humidity levels in the area where the unit is located.
- If available, use a liquid thermometer to measure the temperature inside the unit.
- Wait up to 24 hours after loading warm contents into your refrigerator, or after making an adjustment to the set temperature setting in order to allow unit to stabilize and to get the most accurate temperature reading.
- Refrigeration appliances should be installed in locations where the ambient temperatures are between 50°F and 95°F.
- High levels of humidity in the room or location where the unit is operating can also impact the cooling performance of your appliance.
NOTE: The built in temperature sensor(s) or self-provided thermometer placement is important to note as well. Within any refrigeration unit, temperatures will vary from location to location within the interior of the refrigeration cabinet. As an example, a temperature reading taken near the bottom of the interior cabinet will typically be cooler than a temperature reading at the top of the interior cabinet. A circulation fan or fans can alleviate this effect however the fact that warm air rises and cool air sinks cannot be 100% negated. As such, the location of the temperature sensor should be noted and considered when assessing temperature readings.