I have a Bunn BTX-B. It just stopped heating the water. I received it as a Christmas gift, purchased on Dec. 24, 2010, from Lowes. I do not have the receipt. I emailed customer service. They sent me two emails, the first one states that the 3 year manufacturers warranty has expired, and offering an exhange program for $101.95. The 2nd email tells the main reasons for "leak issues", and again states the warranty is expired. My machine does NOT leak. and it was purchased barely 2 years ago, how can the 3 year warranty be expired?

This is a common question for the BTX-B.
It's a commercial brewer that needs to be pre-filled prior to turning on.. It also needs to be filled again with a full carafe for it to brew properly. I have a link below that will explain how to set up and use this brewer.
Aloha, ukeboy57
https://www.bing.com/videos/search?q=bunn+grx-b&&view=detail&mid=E6D1ADD550DA3DA5B120E6D1ADD550DA3DA5B120&&FORM=VDRVRV

Www.bunn.com

You would need to go to the Bunn website.

The Bun BTX-B has a pair of thermal fuses located on top of the water heater storage unit. If the pot is left without use for a week or so, the thermal fuses will blow if the top of the tank gets too hot (about 150 degrees Fahrenheit) due to the evaporation of water in the storage tank. The operating directions state clearly that if the unit is not going to be used for a few days to turn off the pot. These are there to prevent a fire in case someone does not follow the direction. This is the "MOST" common form of electrical failure in these pots.

To access the thermal fuse
1. Unplug the pot and drain pot by inverting the pot in an empty sink.
2. Remove the two Phillips screws located under the water fill flipper door.
3. Gently insert a small flat blade screw driver into the front top of the lid and remove top cover.
4. Remove the 4 screws inside the water routing tank and remove routing tank simply by lifting off.
5. The thermal fuse is mounted to the top of the tank under a clip and is easily slid out from under the clip. There is a brown wire (goes to power cord neutral) and a black wire (goes into tank disk access hole). Simply measure with a multimeter at lowest ohm setting, the meter should read continuity between the black and brown wires, if it reads an open circuit, the part is bad.

A replacement thermal fuze assembly kit is available off e-bay for about $10. You can buy individual thermal fuzes and replace one of the two that is bad for about $3, but I recommend the kit for most consumers as it comes with wire crimps already mounted and far easier for the average person to simply install. Repair takes about 5-10 minutes.

The Bun BTX-B has a pair of thermal fuses located on top of the water heater storage unit. If the pot is left without use for a week or so, the thermal fuses will blow if the top of the tank gets too hot (about 150 degrees Fahrenheit) due to the evaporation of water in the storage tank. The operating directions state clearly that if the unit is not going to be used for a few days to turn off the pot. These are there to prevent a fire in case someone does not follow the direction. This is the "MOST" common form of electrical failure in these pots.

To access the thermal fuse
1. Unplug the pot and drain pot by inverting the pot in an empty sink.
2. Remove the two Phillips screws located under the water fill flipper door.
3. Gently insert a small flat blade screw driver into the front top of the lid and remove top cover.
4. Remove the 4 screws inside the water routing tank and remove routing tank simply by lifting off.
5. The thermal fuse is mounted to the top of the tank under a clip and is easily slid out from under the clip. There is a brown wire (goes to power cord neutral) and a black wire (goes into tank disk access hole). Simply measure with a multimeter at lowest ohm setting, the meter should read continuity between the black and brown wires, if it reads an open circuit, the part is bad.

A replacement thermal fuze assembly kit is available off e-bay for about $10. You can buy individual thermal fuzes and replace one of the two that is bad for about $3, but I recommend the kit for most consumers as it comes with wire crimps already mounted and far easier for the average person to simply install. Repair takes about 5-10 minutes.

the screws are under the flip lid where you ad water. sounds like your heating element is shorted most common problem with the bunn not hard to replace call bunn for replacement or order on line. hope this helps you. .lee

Hi, Sounds like a boiler therostat or faulty boiler. Dazza REPAIRER

Call Bunn customer service. Those folks are super nice and will help you resolve the problem.

If you will give Customer Service a call, we will be happy to assist you with this issue. 800-352-2866 is the toll free number.