Not an answer but at my house I ran into this on another make. I opted to just let it double filter. What I did do was double or triple the months between changing the fridge's filter since it was getting clean water already.
I need a bypass filter cap for fridge RF28K9070SG that is able to be put into the water filter. I have a reverse osmosis system already, so I don't need a filter. Is there a way to bypass it without a cap, and if not, can anyone direct me to a cap that can reach all the way into the water filter? (The hole for the filter is too deep for a normal bypass cap to be put in)