If you experience this, it is most likely that the diverter valve is not working properly.
If your 10 Stage Water Filter is new, your diverter valve probably need some lubrication. Look down into the top of the diverter valve and locate the little hole. Place 1 or 2 drops of cooking oil into this hole and then gently pull the pin in and out a couple of times. Reattached the diverter valve to your faucet and it should work normally.