My coffee pot was new and I had put water through to see if I could make the pot start working well but it didn’t. I wrote a negative report about this coffee pot and then last night got the information out as to how to clean it and removed the little filter that is up on the back left side  under the lid.   Somehow coffee grounds had gotten in that area.   
I followed the directions putting vinegar and water through the tank and then clean water after that and it worked perfectly this morning!