There are occasions, such as after a repair, that you may need to flush the water supply line for your refrigerator. This is a guide about flushing a refrigerator water line.
How do I clean the inside of the plastic ice maker line? It looks gunky below the faucet under the sink before it travels under the floor to the fridge.
DJC from WA
I need to find out if there is any way to clean (instead of replace) the lines and water reservoir in my "Whirlpool" refrigerator icemaker/water unit. Someone suggested vinegar, but I would like to know if there is anything to force [under pressure] the vinegar (or other cleaner) through the line and reservoir to make sure they are clean.
Here's a link for a repair manual that mentions your problem. It was all I could find, but mentions clogged water lines. (weblink)http://www.appliance-repair.org/Diag/service_manuals/lesson_09/table_of_contents09_visible.html(/weblink)
Vinegar is a good unclogger and de-liming agent, but I don't know if you can get to the lines to force water through them.
Try placing baking soda in the lines and then pouring in hot vinegar. I've used this in my sink drain and the combination creates a volcano effect. Since I don't know the logistics of the lines and water reservoir in your refrigerator (are they removable, for instance), this may not be a viable solution, but I thought it was worth a try.
Hope it helps! (08/07/2003)