My Bunn home coffee maker is not making coffee the way it always has. Coffee is extremely weak even though it is the same brand. Even changed brands to be sure. Same weak results. Thankyou

SOURCE: my bunn coffee maker CWTF-15 21604-0001

It sound like you are either missing the sprayhead or the temperature isn't hot enough. Check first to see if the sprayhead is there. It fits under the brew basket and looks like a little shower head - it's round and has usually five or six little holes in it. If it is missing your coffee will be weak due to the water not being spread across all of the grounds evenly.
The other thing to check is the temperature. Depending upon where you live the water should be between 185F - 200F. If the water is below that temperature the coffee may look like tea.

SOURCE: weak coffee

It sounds like you may have lost the sprayhead. It is under the brew basket (above the place where you put the basket with the filter and the coffee). Sometimes they get loose and you don't realize it and it can fall in the grounds and get tossed out after brewing.

SOURCE: Bunn coffee maker leaks water

There are 3 seals in your unit that could cause your problem. there is a silicon seal right under the pour-in tray, and two on the top of the tank. one of those is for the thermostat, the other is for the sprayhead tube. any of these could leak, causing water to come out the bottom of the brewer. One other thing that can cause this is a scale buildup between the pour-in tray and the tank.

SOURCE: My Keurig B60 is Suddenly Brewing WEAK Coffee

I don't have a solution but have just experienced the same problem and am baffled. I am using the same beans same grind. In fact using the exact same grind it went from great one day to weak the next day.  I always run it for 15 - 16 secs to get the shot and that hasn't changed. Pressure and temperature appear fine. I cleaned the top of the top filter which was a little dirty but not seriously bad - no change. The coffee flow which is normally chocolate coloured to start with is just mid brown. 

Jafu Bumbalini

• 9 Answers
• Posted on Jun 25, 2012

SOURCE: Bunn Coffee Maker Leaks out the bottom

I have an older BUNN B10 pour-o-matic that I thought was leaking from the bottom. Upon close inspection, I found that it was leaking from the worn out washers located on the top of the tank, allowing water to run down the sides of the stainless steel tank. There's a great fix offered on Fixya.com that suggests going to a hardware store and buying a Gardner Bender GHG-1575 rubber grommet with a 3/4" hole and install it into the large hole in the basin. Then place a metal washer on top of the grommet and snug it up with the threaded fitting. Many folks say it's a great fix. I went a different route. I called BUNN customer service and spoke to a very nice woman who understood my needs and sent out a free repair kit that contained a new fitting, washer, and seal. I received it in a few days and it's working great. Beats going out and buying parts for a work around repair. BTW, the repair kit is called "Universal Retail Seal Replacement Kit #37091.0000"