Running all the time means you either have to clear/clean your condenser... Check for good tight door seals... and make sure the doors/vents are not blocked by any contents...
Free flowing cold dry air inside... sealed compartments is ideal.
Dollar Pull test:
Use the dollar bill pull test all round your doors...
(brown paper sack is cleaner & nicer):
You can take the paper...
close the door on it..
Pulling it out you should feel mild but constant pressure around the full perimeter of each door (or drawer).
If you do NOT feel it the door/drawer needs to be checked for gasket integrity... and the door may need to be adjusted.
New door gaskets are not terribly expensive
(but most issues are caused by spilled food, cleaning
or door adjustments = easy).
(FULLY covered in every owners manual I've read).
Consider purchasing 2 TAYLOR BRAND refrigerator
thermometer & turning the freezer to the ZERO Fahrenheit
area and the refrigerator to 33 or 34 degrees above zero
(32 degrees Fahrenheit... being frozen eggs & milk (too cold)).
Else... comment me back...
We can take this all the way into refrigerant level check if you find NOTHING ELSE WRONG
((HIGHLY IMPROBABLE... but do-able)).
You gasket is showing as no longer
available... at appliancepartspros.com...
So be gentle!!!