I did not change the filter when it first said to change. When I changed it several months later, the water came out VERY slowly. I put old filter back in and still slow. I ran many gallons of water through it, cleared the supply line, and still nothing. When water dispenser button is first pushed, it comes out OK, but one second later, it goes back to slow. It does make ice, but not as much as normal. There is evidence of calcium deposits as our water is very hard. I have called Thermador and anyone else I thought would help, but all to no avail. Any help would be appreciated. Thanks