Re: LG American style fridge freezer
not had any experience with this particular appliance, but as long as there is good suction on the doors when you open them (there should be at least a little bit of resistance) and also check around the seal with the door closed to make sure the seal is tight to the cabinet.
If warm air is getting in there, the compressor would have to work harder, but dont worry about how much it comes on and goes off, there is no particular pattern, it all depends on how the appliance is used. (ie how many times you open the door, etc.)
If there is warm air getting in there, you might notice a build up of ice, or condensation forming inside around air vents and maybe elsewhere.
If the seals arn’t tight enough, warm them up with a hair dryer and stretch them a little (pull from door towards you, not vertical!)