You need to replace both the thermister and the thermal fuses to be sure you have these things fixed. I checked the thermister and it seemed to have the right readings. Replaced the thermal fuses which were both bad and it worked for about a week then both were gone again. Replaced them and it worked one cycle and gone again. Turns out the thermister is not cutting back as required for the caraf warming cycle, resulting in overheating when brew is done. The fuses then melt to protect it.