Okay, you finally got tired of the "change water filter" symbol on your Samsung, LG, or other refrigerator and plunked fifty bucks to get a new one. Then you snap the old one out and snap the new one in. First thing you hear is a noise reminiscent of a jackhammer as the entire kitchen shakes, and then you try and run the requisite six gallons of water through your dispenser; only thing is that little to no water dibbles out.
First of all, I'm a big fan of inline water filters when all possible. As long as you have easy access to the stop or shut off valve to the refrigerator, these are less of a pain in the butt to install. Problem is today's manufacturers can't leave a good enough thing alone and are hell bent to improve upon it; especially if it means more revenue for them. The result is there are more than a few types of filters that look like oil filters or something out of Buck Rodgers. These snap in an activate a valve that allows water to filter through into your glass or ice maker.
The problem is that if you snap these into quickly, you might cause the valve not to activate. Now I can't guarantee this will work for EVERY situation, but if you install, that is screw or snap in the new filter s-l-o-w-l-y, you will not only equalize the pressures inside, but you may get things working again. The trick is to remove the filter if you've already installed. Then push and turn until you hear a hiss and water rushing in before you secure it to the housing.
The result should be fresh, clean water that flows quickly into your sippy cup or ice maker IF you get this right.
You could make an argument for NOT changing the filter, ever. However, this is also a mistake as water is a breeding ground for pathogens such as Legionaries (Legionella) Guardia, Cryptosporidium, or other water borne maladies. These filters are good for six months and should be changed regularly or you should install a bypass. Maranatha!