Question about Krups FMF4-14 Coffee Maker
This coffeemaker will not brew coffee - the water does not get heated and filter through the coffee filter.
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Posted on Jan 02, 2017
I just had the same failure, but fortunately, had already bought a used 10-cup unit a few months back as a spare.
The component in question is a thermal circuit breaker, of the sort which does not reset. Once activated, it is destroyed,
I have been unsuccessful locating the same component on the internet, but it seems to be a very high temperature unit, with the nomenclature "Tf 318 C" which because of the lower case "f", leads me to conclude that it's designed to trip at 318 degrees, C, or a very healthy 604 degrees, F.
Similar fuses in other appliances range around 230 degrees C (446 degrees F), which is in the ballpark.
The failure is easy to verify. If blown, there will be powdery white residue on the inside of the bottom plastic cover near the part. Also, an ohmeter will show an open circuit across the contacts. (Unplug the unit before measuring!)
Screws to remove the bottom cover are three tamper resistant torx screws.
If I am unable to find an exact replacement, I will use a thermal fuse in the same power and temperature range (10 Amps, 300 degrees C trip).
Because my unit unequivocably did not experience over temperature conditions, I suspect this is a component aging issue and that there is no other problem with the coffee maker.
Supporting this is the fact that the unit works fine after I moved the good part from my spare coffeemaker to the dead one.
Posted on Apr 13, 2008
Mine had the same problem ... all the lights are on, but no heating on the plate, and no dripping of water.
After a weekend on the workbench, I've mastered this machine. The KM7005 has 2 x MicroTemp G4 thermal cutoff (TCO) fuses which interrupt the Live line, for overheat protection. Mine didn't overheat per se, but the TCO blew anyway. Not reset-able ... need to be replaced with a soldering iron. I'll be happy to advise you to fix this, or fix it for you. Write me at KM7005@flightsystems.biz.
Posted on Oct 19, 2009
I your plate is not heating, no water will flow. This seems to be a common problem with this rig. So far, I've helped 13 people on this site with exactly the same problem ... all the lights are on, but no heating on the plate and no dripping water.
After a weekend on the workbench, I've mastered this machine. The KM7000 has 2 x MicroTemp G4 thermal cutoff (TCO) fuses which interrupt the Live line, for overheat protection. Mine didn't overheat per se, but the TCO blew anyway. Not reset-able ... need to be replaced with a soldering iron. I'll be happy to advise you to fix this, or fix it for you. Write me at KM7000@flightsystems.biz
Posted on Jan 31, 2010
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